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161 views155 pages

Igs-Nt Communication-Guide - 7

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gonzalo cruz garcia

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InteliGen

InteliSys
InteliMains
Communication Guide for
ComAp Controllers

1 Document information 5
2 Controllers communication capabilities 9
3 Applications overview 22
4 Remote monitoring 45
5 Peripheral modules 60
6 Connection 80
7 Communication 85
8 Converters 121
9 Modbus Connection 131
10 Modbus Appendix 148

Copyright © 2022 ComAp a.s.

Written by Jan Tomandl
Prague, Czech Republic
ComAp a.s., U Uranie 1612/14a,

Communication
170 00 Prague 7, Czech Republic
Tel: +420 246 012 111
E-mail: info@comap-control.com, www.comap-
control.com Guide
Table of contents
1 Document information 5 3.4 Modbus – Multiple Gen-sets 39
1.1 Clarification of Notation 5 3.4.1 RS485 – MODBUS 39
1.2 About this guide 5 3.4.2 RS232/RS485 – MODBUS (I-LB+) 40
1.3 Legal notice 5 3.4.3 Ethernet – MODBUS (IB-NT) 41
1.4 Document history 7 3.5 Access to password protected objects 43
1.5 Definition of terms 7
4 Remote monitoring 45
2 Controllers communication capabilities 9 4.1 Connection to Internet (Direct) 45
2.1 IG/IS/IM-NTC-BB – Communications 10 4.1.1 Controllers 45
2.2 IG/IS/IM-NTC-BB – Terminals 11 4.1.2 Equipment 47
2.3 IG/IS/IM-NTC-BB – Peripheral modules 12 4.1.3 Available software for IG/IS-NT 47
2.4 IG/IS/IM-NTC-BB – Jumpers settings 13 4.2 Internet connection via AirGate 47
2.5 IG/IM-NT-BB – Communication 14 4.3 WebSupervisor 50
2.6 IG/IM-NT-BB – Terminal 15 4.4 Web interface 51
2.7 IG/IM-NT-BB – Peripheral modules 16 4.4.1 Scada 52
2.8 IG/IM-NT-BB – Jumper settings 17 4.4.2 Measurement 53
2.9 IG-NT – Communications, Terminals 18 4.4.3 Setpoints 53
2.10 IG-NTC – Communication, Terminals 19 4.4.4 History 54
2.11 IS-NT-BB – Communications, Terminals 20 4.4.5 Web server adjustment 55
2.12 IM-NT – Communications, Terminals 21 4.5 Internet connection via cellular network 56
4.5.1 Connection via Internet bridge IB-NT 56
3 Applications overview 22
4.5.2 Active Call 56
3.1 Direct PC connection to Single Gen-set 22
4.6 Active SMS 57
3.1.1 RS232 connection 22
4.6.1 Active E-mail (SMS E-mail) 58
3.1.2 USB connection 23
4.7 Access Lock 59
3.1.3 RS485 connection 24
3.1.4 Ethernet connection (Direct) 25 5 Peripheral modules 60
3.2 Direct PC connection to Multiple gen-sets 27 5.1 Displays 60
3.2.1 RS485 connection 27 5.1.1 InteliVision 12Touch display 60
3.2.2 RS232/485 connection (I-LB+) 29 5.1.2 InteliVision 8 display 61
3.2.3 USB connection via I-LB+ module 30 5.1.3 InteliVision 5 display 62
3.2.4 Ethernet connection via IB-NT 32 5.2 Comms extension – I-LB+ Local bridge 62
3.2.5 Ethernet connection (Direct) 33 5.2.1 Jumper setings 64
3.3 Monitoring Local on site – MODBUS 34 5.2.2 Jumper selection tree 64
3.3.1 RS232 Modbus 34 5.3 I-CR Module for CAN Bus Extension 65
3.3.2 RS485 Modbus 36 5.3.1 I-CR module functions 66
3.3.3 Ethernet – MODBUS/TCP (Direct) 37 5.3.2 I-CR configuration jumpers 66

IGS-NT Communication Guide 2

5.4 I-CR-R Module for CAN Bus Redundancy 66 7.2.11 Answer message 92
5.5 I-CR-R module properties 68 7.2.12 Examples of SMS commands 92
5.5.1 I-CR-R module functions 68 7.3 Modbus Communication 94
5.5.2 I-CR-R configuration jumpers 69 7.3.1 Data reading 94
5.5.3 I-CR-R indication and diagnostic 7.3.2 Data writing 94
LEDs 70 7.4 Examples of Modbus Communication 96
5.6 Commands for IGS-NT and InteliSys Gas 71 7.4.1 Battery voltage – reading (read
5.7 Commands for IM-NT 73 multiple registers) 97
5.8 Commands for ID-BB 75 7.4.2 Values (Oil press, Water temp, Fuel
5.9 Commands for IS-GSC 77 level) – reading 99
7.4.3 Binary input – reading 100
6 Connection 80 7.4.4 Password decode – reading 100
6.1 Recommended CAN/RS485 connection 80 7.4.5 Gen-set name – reading 101
6.1.1 CAN bus connection 80 7.4.6 Engine state – reading 102
6.1.2 CAN / fiber optic converter 81 7.4.7 Gear teeth – writing 103
6.1.3 CAN / Ethernet gateway 82 7.4.8 Nominal Power – writing 103
6.1.4 RS485 connection 83 7.4.9 Mode – writing 104
6.1.5 Termination Resistors 84 7.4.10 Reset/Confirm Alarm 105
6.1.6 Bias Resistors 84 7.4.11 Remote Switch 1-8 – Set (Remote
Control 1-8) 106
7 Communication 85
7.4.12 External Value1 – writing 107
7.1 Communication cables 85
7.4.13 User & Password – in two steps 108
7.1.1 RS485 cable 85
7.4.14 User & Password – in one step 109
7.1.2 CAN bus cable 86
7.4.15 Start the engine – in one step 109
7.1.3 RS232 cable 86
7.4.16 Start the engine – in two steps 110
7.1.4 Cables for direct and modem
7.4.17 History – reading 110
connections 86
7.4.18 AlarmList reading 112
7.1.5 USB cable 87
7.4.19 Change the communication
7.1.6 Ethernet cable 88
language (only String type data) 113
7.2 SMS Message command 88
7.5 Reserved communication objects 114
7.2.1 Controller address 88
7.6 Replacing InternetBridge-NT 116
7.2.2 Access code 89
7.6.1 Sites with "NT" family controllers 116
7.2.3 Read value or setpoint 89
7.6.2 Sites with new controller families 117
7.2.4 Adjust setpoint 89
7.6.3 Combined sites 119
7.2.5 Enter password 90
7.2.6 Gen-set control 90 8 Converters 121
7.2.7 Read Alarm list 91 8.1 Converter RS232 ↔ RS485 121
7.2.8 Time delay 91 8.1.1 General properties of RS232 to
7.2.9 Remote switches (IG/IS-NT only) 91 RS485 converters: 121

7.2.10 ExtValues (IG/IS-NT only) 92 8.1.2 Recommended converters 122

8.2 RS232 Bluetooth adapter 122

IGS-NT Communication Guide 3

8.2.1 Recommended adapter 122 9.6 User Modbus 146
8.3 Converter USB ↔ RS232 122
10 Modbus Appendix 148
8.3.1 Recommended converters 123
10.1 Modbus Switches 148
8.4 Converter USB ↔ RS485 123
10.2 Data types 149
8.4.1 Recommended converter 123
10.3 Communication status 150
8.5 Converter CAN ↔ CAN 124
10.4 Error list 152
8.5.1 Recommended converter 124
8.6 Recommended optical USB extension
cables 124
8.6.1 Radio Link 124
8.6.2 Recommended equipment 125
8.7 Converter Modbus RTU ↔ Profibus 125
8.7.1 GE Digital Energy – P485 Modbus to
Profibus Converter 125
8.7.2 Converter settings 125
8.7.3 Setup example (using wizard) 126
8.7.4 Controller settings 129
8.8 Anybus Comunicator – Modbus RTU to
Profibus and other communication standards 129
8.8.1 Ethernet converter from twisted pair
(UTP/STP) to optic 130
8.8.2 Recommended equipment 130

9 Modbus Connection 131

9.1 Modbus Step by Step 131
9.2 Important setpoints in the controller 131
9.2.1 Modbus communication via RS232 –
single controller 132
9.2.2 Modbus communication via RS485 132
9.2.3 Modbus communication via RS485 –
multiple controllers 132
9.2.4 Modbus communication via I-LB+ 133
9.2.5 Modbus communication via IB-NT 133
9.3 Modbus Protocol Description 134
9.3.1 Modbus TCP 134
9.3.2 Modbus RTU 136
9.3.3 Alarm list reading 141
9.3.4 History reading 145
9.4 Check field calculation 145
9.5 How get numbers of Modbus
communication objects 145

IGS-NT Communication Guide 4

1 Document information
1.1 Clarification of Notation 5
1.2 About this guide 5
1.3 Legal notice 5
1.4 Document history 7
1.5 Definition of terms 7

1.1 Clarification of Notation

Note: This type of paragraph calls the reader’s attention to a notice or related theme.

IMPORTANT: This type of paragraph highlights a procedure, adjustment etc., which can cause a
damage or improper function of the equipment if not performed correctly and may not be clear at
first sight.

WARNING: This type of paragraph highlights a procedure, adjustment etc., which can cause a
damage or improper function of the equipment if not performed correctly and may not be clear at
first sight.

Example: This type of paragraph contains information that is used to illustrate how a specific function
works.

1.2 About this guide

There are following types of communication between controller(s) and superior system in the controller:
Local (on site) communication
via ComAp software
via MODBUS (MODBUS RTU or MODBUS TCP)
Remote communication
via Ethernet
via Internet (AirGate)
via MODEM
These types of connections are available via RS232, RS485, USB, ETHERNET communication ports.

1.3 Legal notice

This End User's Guide/Manual as part of the Documentation is an inseparable part of ComAp’s Product
and may be used exclusively according to the conditions defined in the “END USER or Distributor LICENSE
AGREEMENT CONDITIONS – COMAP CONTROL SYSTEMS SOFTWARE” (License Agreement) and/or in
the “ComAp a.s. Global terms and conditions for sale of Products and provision of Services” (Terms) and/or in
the “Standardní podmínky projektů komplexního řešení ke smlouvě o dílo, Standard Conditions for Supply of
Complete Solutions” (Conditions) as applicable.
ComAp’s License Agreement is governed by the Czech Civil Code 89/2012 Col., by the Authorship Act
121/2000 Col., by international treaties and by other relevant legal documents regulating protection of the
intellectual properties (TRIPS).

IGS-NT Communication Guide 5

The End User and/or ComAp’s Distributor shall only be permitted to use this End User's Guide/Manual with
ComAp Control System Registered Products. The Documentation is not intended and applicable for any
other purpose.
Official version of the ComAp’s End User's Guide/Manual is the version published in English. ComAp
reserves the right to update this End User's Guide/Manual at any time. ComAp does not assume any
responsibility for its use outside of the scope of the Terms or the Conditions and the License Agreement.
Licensed End User is entitled to make only necessary number of copies of the End User's Guide/Manual. Any
translation of this End User's Guide/Manual without the prior written consent of ComAp is expressly
prohibited!
Even if the prior written consent from ComAp is acquired, ComAp does not take any responsibility for the
content, trustworthiness and quality of any such translation. ComAp will deem a translation equal to this End
User's Guide/Manual only if it agrees to verify such translation. The terms and conditions of such verification
must be agreed in the written form and in advance.
For more details relating to the Ownership, Extent of Permitted Reproductions Term of Use of the
Documentation and to the Confidentiality rules please review and comply with the ComAp’s License
Agreement, Terms and Conditions available on www.comap-control.com.
Security Risk Disclaimer
Pay attention to the following recommendations and measures to increase the level of security of ComAp
products and services.
Please note that possible cyber-attacks cannot be fully avoided by the below mentioned recommendations
and set of measures already performed by ComAp, but by following them the cyber-attacks can be
considerably reduced and thereby to reduce the risk of damage. ComAp does not take any responsibility for
the actions of persons responsible for cyber-attacks, nor for any damage caused by the cyber-attack.
However, ComAp is prepared to provide technical support to resolve problems arising from such actions,
including but not limited to restoring settings prior to the cyber-attacks, backing up data, recommending other
preventive measures against any further attacks.
Warning: Some forms of technical support may be provided against payment. There is no legal or factual
entitlement for technical services provided in connection to resolving problems arising from cyber-attack or
other unauthorized accesses to ComAp's Products or Services.
General security recommendations and set of measures
1. AccessCode
• Change the AccessCode BEFORE the device is connected to a network.
• Use a secure AccessCode – ideally a random string of 8 characters containing lowercase, uppercase letters
and digits.
• For each device use a different AccessCode.
2. Password
• Change the password BEFORE the device enters a regular operation.
• Do not leave displays or PC tools unattended if an user, especially administrator, is logged in.
3. Controller Web interface
• The controller web interface at port TCP/80 is based on http, not https, and thus it is intended to be used only
in closed private network infrastructures.
• Avoid exposing the port TCP/80 to the public Internet.
4. MODBUS/TCP

IGS-NT Communication Guide 6

• The MODBUS/TCP protocol (port TCP/502) is an instrumentation protocol designed to exchange data
between locally connected devices like sensors, I/O modules, controllers etc. From it’s nature it does not
contain any kind of security – neither encryption nor authentication. Thus it is intended to be used only in
closed private network infrastructures.
• Avoid exposing the port TCP/502 to the public Internet.
5. SNMP
• The SNMP protocol (port UDP/161) version 1,2 is not encrypted. Thus it is intended to be used only in
closed private network infrastructures.
• Avoid exposing the port UDP/161 to the public Internet.

1.4 Document history

Revision number Date Author
7 May 2021 Pavel Nepil
6 November 2019 Martin Klíma
5 November 2019 Martin Klíma
4 October 2019 Jakub Suchý
3 April 2019 Milan Matějka
2 March 2019 Radovan Hosek
1 October 2018 Jan Tomandl

1.5 Definition of terms

Local connection
Type of connection using direct connection on site via protocol of ports on the controller. Length of
connection is given by protocol specification.
Remote connection
Type of connection using standard communication lines such as Internet, modem connection and
GSM connection for communication between controller and other superior device.
Comap Protocol
Communication between PC with ComAp software (InteliMonitor, GenConfig) and controller is
running on this protocol.
rd
3 party software
Software using standardized protocol for sharing of data between particular systems (for example
Modbus RTU, Modbus TCP etc.).
Single gen-set communication
This type of connection allows communication only with one controller. Communication with other
controllers on site via this type of connection is not possible.
Multiple gen-set communication
This type of connection allows communication with more than one controller on site via single
communication link.

IGS-NT Communication Guide 7

Monitoring
Type of communication used for continuous displaying of process data and process control of the
system.
Configuration
Type of communication used for writing of configuration file into the controller.

Note: There are used some abbreviations for resolution of all hardware variations of IGS -NT controllers in
this document. These abbreviations correspond with order codes of each HW variation (see the table below).

InteliSys NTC Basebox IS-NTC-BB

InteliSys NT IS-NT-BB
InteliGen NTC Basebox IG-NTC-BB
InteliGen NT Basebox IG-NT-BB
InteliGen NTC IG-NTC
InteliGen NT IG-NT
InteliMains NTC Basebox IM-NTC-BB
InteliMains NT Basebox IM-NT-BB
InteliMains NT IM-NT

Note: In abbreviation the "C" means "Communications" – controller with extended communication ports. The
"BaseBox" controller has not inbuilt LCD panel, it is recommended to use IV5, IV8 or IV12 remote display.
Abbreviation "IGS-NT" stands for IG-NT or IS-NT and it is used to describe common features of both
products.

6 back to Document information

IGS-NT Communication Guide 8

2 Controllers communication
capabilities
2.1 IG/IS/IM-NTC-BB – Communications 10
2.2 IG/IS/IM-NTC-BB – Terminals 11
2.3 IG/IS/IM-NTC-BB – Peripheral modules 12
2.4 IG/IS/IM-NTC-BB – Jumpers settings 13
2.5 IG/IM-NT-BB – Communication 14
2.6 IG/IM-NT-BB – Terminal 15
2.7 IG/IM-NT-BB – Peripheral modules 16
2.8 IG/IM-NT-BB – Jumper settings 17
2.9 IG-NT – Communications, Terminals 18
2.10 IG-NTC – Communication, Terminals 19
2.11 IS-NT-BB – Communications, Terminals 20
2.12 IM-NT – Communications, Terminals 21

6 back to Table of contents

IGS-NT Communication Guide 9

2.1 IG/IS/IM-NTC-BB – Communications

IGS-NT Communication Guide 10

2.2 IG/IS/IM-NTC-BB – Terminals

IGS-NT Communication Guide 11

2.3 IG/IS/IM-NTC-BB – Peripheral modules

IGS-NT Communication Guide 12

2.4 IG/IS/IM-NTC-BB – Jumpers settings

IGS-NT Communication Guide 13

2.5 IG/IM-NT-BB – Communication

IGS-NT Communication Guide 14

2.6 IG/IM-NT-BB – Terminal

IGS-NT Communication Guide 15

2.7 IG/IM-NT-BB – Peripheral modules

IGS-NT Communication Guide 16

2.8 IG/IM-NT-BB – Jumper settings

IGS-NT Communication Guide 17

2.9 IG-NT – Communications, Terminals

IGS-NT Communication Guide 18

2.10 IG-NTC – Communication, Terminals

IGS-NT Communication Guide 19

2.11 IS-NT-BB – Communications, Terminals

IGS-NT Communication Guide 20

2.12 IM-NT – Communications, Terminals

6 back to Controllers communication capabilities

IGS-NT Communication Guide 21

3 Applications overview
3.1 Direct PC connection to Single Gen-set 22
3.2 Direct PC connection to Multiple gen-sets 27
3.3 Monitoring Local on site – MODBUS 34
3.4 Modbus – Multiple Gen-sets 39
3.5 Access to password protected objects 43

6 back to Table of contents

3.1 Direct PC connection to Single Gen-set

3.1.1 RS232 connection

Controllers

Controllers IG-NT-BB IM-NT-BB IG-NTC-BB IS-NTC-BB IM-NTC-BB

Connection
YES YES YES YES YES
applicable
Available
RS232(1) RS232(1) RS232(1) RS232(1) RS232(1)
ports
IG/IM-NT-BB – Communication
More info IG/IS/IM-NTC-BB – Communications (page 10)
(page 14)

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection
YES YES YES YES
applicable
Available RS232(1) RS232(1)
RS232(1) RS232(1)
ports RS232(2) RS232(2)
IG-NT – IG-NTC – IS-NT-BB – IM-NT –
Communications, Communication, Communications, Communications,
More info
Terminals (page Terminals (page Terminals (page Terminals (page
18) 19) 20) 21)

Note: Other way how to realize RS232 connection is via RS232/485 connection (I-LB+) (page 29).

IGS-NT Communication Guide 22

Controller setup
(Setpoints/Comms settings group)

RS232(1) mode = DIRECT

RS485(1) conv. = DISABLED

Equipment

Equipment needed
Controller side -
Connection RS232 cable (page 86) up to 10 m
PC side RS232 connection or RS232/USB converter

3.1.2 USB connection

Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NTC-BB IM-NT-BB

Connection
NO YES YES YES NO
applicable
Available
external bridge USB USB USB external bridge
ports
More info IG/IS/IM-NTC-BB – Communications (page 10)

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection
NO YES YES NO
applicable
Available
external bridge(1) USB USB external bridge
ports
IG-NTC – IS-NT-BB –
More info Communication, Communications,
Terminals (page 19) Terminals (page 20)

Note: Direct USB connection is not possible for some controllers, however USB connection is available for all
mentioned controllers via RS232/485 connection (I-LB+) (page 29).

IGS-NT Communication Guide 23

Controller setup
(Setpoints/Comms settings group)

No special settings are required

Equipment

Equipment needed
Controller side -
Connection USB cable (page 87) A-B
PC side USB connection

3.1.3 RS485 connection

Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NTC-BB IM-NT-BB

Connection
NO YES YES YES NO
applicable
Available
external bridge RS485(2) RS485(2) RS485(2) external bridge
ports
More info IG/IS/IM-NTC-BB – Communications (page 10)

Controllers IG-NT IG-NTC IM-NT IS-NT-BB

Connection
NO YES NO YES
applicable
Available RS485(1)
RS485(1) RS485(1) RS485(2)
ports RS485(2)
IS-NT-BB –
More info IG-NTC – Communication, Terminals (page 19) Communications,
Terminals (page 20)

Note: Direct RS485 connection is not possible for some controllers, however RS485 connection is available
for all mentioned controllers via RS232/485 connection (I-LB+) (page 29).

IGS-NT Communication Guide 24

Controller setup
(Setpoints/Comms settings group)

RS232(2) mode = DIRECT

RS485(2) conv. = ENABLED

IMPORTANT: Be aware, that default setpoint value of RS485(2) port at IS-NTC-BB controller is
DISABLED. Changing this setpoint to ENABLED means – it’ll be locked in this ENABLED position
and can’t be changed back to DISABLED. It’s due to the physical controller port settings.

Equipment

Equipment needed
Controller side -
Connection RS485 cable (page 85) - Twisted pair, length up to 1 km
PC side Converter RS485/RS232or USB

Note: RS485 connection can be used for gen-set control for longer distance. IG-NT-BB has no possibility of
direct connection to RS485 bus. This controller provides RS232 port only. External converter from RS232 to
RS485 is needed.

3.1.4 Ethernet connection (Direct)

The Internet (Ethernet) connection is a point-to-point connection between a PC and a controller or site via an
TCP/IP protocol-based network. The physical configuration of such network can be a small local area
ethernet network as well as the Internet.

IGS-NT Communication Guide 25

Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NTC-BB IM-NT-BB

Connection
NO YES YES YES NO
applicable
Available external external
ETHERNET ETHERNET ETHERNET
ports bridge bridge
More info IG/IS/IM-NTC-BB – Communications (page 10)

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection
NO NO NO NO
applicable
Available
external bridge external bridge external bridge external bridge
ports

Note: Ethernet connection is available for all mentioned controllers via external bridge or IB-NT (see
Ethernet connection via IB-NT on page 32).

Number of clients connected simultaneously

3 clients ComAp/TCP protocol InteliMonitor, up to 2 of them can be connected via AirGate.
Example:
3x direct IP connection, or
2x direct IP connection + 1x AirGate connection, or
1x direct IP connection + 2x AirGate connection

All of the connections shown above, should be combined with:

IGS-NT Communication Guide 26

Note: The IP addresses of the controllers must be accessible from the remote computer. If the remote
computer is connected into another LAN segment than the gen-sets are, there must be a gateway(s) that
enable direct traffic between the segments. If the remote computer is connected via Internet, then the internet
gateway of the LAN where gen-sets are connected must have public IP address, must allow incoming traffic
and must provide port forwarding from the external public IP to the different internal gen-set IPs according to
the port used.

Image 3.1 Internet gateway configuration example (port forwarding)

Equipment

Equipment needed
Controller side -
Ethernet cable (page 88) to LAN, for point to point connection between PC and
Connection
controller use cross-wired cable
PC side ETHERNET connection

3.2 Direct PC connection to Multiple gen-sets

3.2.1 RS485 connection

IGS-NT Communication Guide 27

Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NTC-BB IM-NT-BB

Connection
NO YES YES YES NO
applicable
Available
- RS232(2) RS232(2) RS232(2) -
ports
More info IG/IS/IM-NTC-BB – Communications (page 10)

Controllers IG-NT IG-NTC IM-NT IS-NTC-BB

Connection
YES YES YES YES
applicable
Available RS232(1)
RS232(1) RS232(1) RS232(2)
ports RS232(2)
IG-NT – IS-NT-BB –
IG-NTC – Communication,
More info Communications, Communications,
Terminals (page 19)
Terminals (page 18) Terminals (page 20)

Controller setup
(Setpoints/Comms settings group)

RS232(2) mode = DIRECT

RS485(2) conv. = ENABLED

Note: IG-NT-BB has no possibility of direct connection to RS485 bus. This controller provides RS232 port
only. External converter from RS232 to RS485 is needed.

Equipment

Equipment needed
Controller side -
Connection RS485 cable (page 85) - Twisted pair, length up to 1 km
PC side RS232 connection, Converter RS485/RS232

IGS-NT Communication Guide 28

3.2.2 RS232/485 connection (I-LB+)

Note: Comms extension – I-LB+ Local bridge (page 62) enables monitoring and configuration up to 32
controllers interconnected via CAN2 intercontroller bus. It is also possible to use I-LB+ for single controller
connection.

I-LB+ hardware setup

(all jumpers in those positions)

HW/SW control No matter

Open
ComAp/Modbus
Selection of CAN address. Open = ADDR1, Close = ADDR2
It is possible to use up to two I-LB+ devices in direct mode on CAN2 bus. Let jumper
ADDR1/ADDR2 open in case of using one I-LB+ module. Other I-LB module has to have this jumper
closed. (read more about Comms extension – I-LB+ Local bridge (page 62))
DIRECT/MODEM Open
RS485/RS232 Selection of communication port (jumper is in RS232 or RS485 position)
Comm. speed. No matter
RS485 120 Ω Open = terminator not connected, Close = terminator connected
CAN 120 Ω Open = terminator not connected, Close = terminator connected

IGS-NT Communication Guide 29

Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NT-BB IM-NTC-BB

Connection applicable YES YES YES YES YES
RS232 on ILB+ RS232 on ILB+ RS232 on ILB+ RS232 on ILB+ RS232 on ILB+
Available ports
RS485 on ILB+ RS485 on ILB+ RS485 on ILB+ RS485 on ILB+ RS485 on ILB+
More info Comms extension – I-LB+ Local bridge (page 62)

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection applicable YES YES YES YES
RS232 on I-LB+ RS232 on I-LB+ RS232 on I-LB+ RS232 on I-LB+
Available ports
RS485 on I-LB+ RS485 on I-LB+ RS485 on I-LB+ RS485 on I-LB+
More info Comms extension – I-LB+ Local bridge (page 62)

Equipment

Equipment needed
Controller side I-LB+ unit (see Comms extension – I-LB+ Local bridge on page 62)
Connection RS232 cable (page 86) or RS485 cable (page 85)
RS232 connection or RS232/USB converter
PC side
RS485 connection or RS485/USB converter

3.2.3 USB connection via I-LB+ module

IGS-NT Communication Guide 30

I-LB+ hardware setup
(all jumpers in those positions)

HW/SW control no matter (Open)

ComAp/Modbus Open
Selection of CAN address. Open = ADDR2, Close = ADDR1 (read more about I-
ADDR1/ADDR2
LB+ module)
DIRECT/MODEM Open
RS485/RS232 No matter
Comm. speed. No matter
RS485 120 Ω Open = terminator not connected, Close = terminator connected
CAN 120 Ω Open = terminator not connected, Close = terminator connected

Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NT-BB IM-NTC-BB

Connection applicable YES YES YES YES YES
USB on I- USB on I-
Available ports USB on I-LB+ USB on I-LB+ USB on I-LB+
LB+ LB+
More info Comms extension – I-LB+ Local bridge (page 62)

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection applicable YES YES YES YES
Available ports USB on I-LB+ USB on I-LB+ USB on I-LB+ USB on I-LB+
More info Comms extension – I-LB+ Local bridge (page 62)

Equipment

Equipment needed
Controller side I-LB+ unit (see Comms extension – I-LB+ Local bridge on page 62)
Connection USB (see USB cable on page 87)
PC side USB connection

IGS-NT Communication Guide 31

3.2.4 Ethernet connection via IB-NT
Up to 32 controllers can be monitored via one IB-NT. Response time of a system with this type of connection
depends on number of controllers, higher number of controllers means slower system response time.

Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NT-BB IM-NTC-BB

Connection
YES YES YES YES YES
applicable
Available
IB-NT IB-NT IB-NT IB-NT IB-NT
ports
More info I-CR Module for CAN Bus Extension (page 65)

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection
YES YES YES YES
applicable
Available
IB-NT IB-NT IB-NT IB-NT
ports
More info I-CR Module for CAN Bus Extension (page 65)

Note: Max. 3 clients of ComAp type (InteliDDE server, WinScope, WebSupervisor mobile) can be connected
simultaneously to the IB-NT.

Note: For more information about IB-NT internet bridge read IB-NT Global Guide.

IGS-NT Communication Guide 32

3.2.5 Ethernet connection (Direct)

Controllers

Controllers IG-NT-BB IG-NTC IS-NTC-BB IM-NTC-BB IM-NT-BB

Connection
NO YES YES YES NO
applicable
Available external external
ETHERNET ETHERNET ETHERNET
ports bridge bridge
More info IG/IS/IM-NTC-BB – Communications (page 10)

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection
NO NO NO NO
applicable
Available
external bridge external bridge external bridge external bridge
ports

Note: Ethernet connection is available for all mentioned controllers via external internet bridge or IB-NT (see
Ethernet connection via IB-NT on page 32).

Number of clients connected simultaneously

All of the connections shown above, should be combined with:

IGS-NT Communication Guide 33

Image 3.2 Internet gateway configuration example (port forwarding)

Equipment

Equipment needed
Controller side -
Ethernet cable (page 88) to LAN, for point to point connection between PC and
Connection
controller use cross-wired cable
PC side ETHERNET connection

3.3 Monitoring Local on site – MODBUS

3.3.1 RS232 Modbus

IGS-NT Communication Guide 34

Controllers

Controllers IG-NT-BB IM-NT-BB IG-NTC-BB IS-NTC-BB IM-NTC-BB

Connection
YES YES YES YES YES
applicable
Available
RS232(1) RS232(1) RS232(1) RS232(1) RS232(1)
ports
IG/IM-NT-BB – Communication
More info IG/IS/IM-NTC-BB – Communications (page 10)
(page 14)

Controllers IG-NT-BB IG-NTC IS-NT-BB IM-NT

Note: Other way how to realize RS232 connection is via RS232/RS485 – MODBUS (I-LB+) (page 40).

Controller setup
(Setpoints/Comms settings group)

RS232(1 or 2) mode = MODBUS-DIRECT

RS485(1 or 2) conv. = DISABLED
RS232(1)MBCSpd = 9600, 19200, 38400, 57600

Equipment

Equipment needed
Controller side -
Connection RS232 cable (page 86) cable up to 10 m
Other device
RS232 connection or RS232/USB converter
side

IGS-NT Communication Guide 35

3.3.2 RS485 Modbus

Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NTC-BB IM-NT-BB

Connection
NO YES YES YES NO
applicable
Available
external bridge RS232(2) RS232(2) RS232(2) external bridge
ports
More info IG/IS/IM-NTC-BB – Communications (page 10)

Controllers IG-NT IM-NT IG-NTC IS-NT-BB

Connection
YES YES YES YES
applicable
Available RS232(1)
RS232(1) RS232(1) RS232(2)
ports RS232(2)
IG-NTC – IS-NT-BB –
IG-NT – Communications,
More info Communication, Communications,
Terminals (page 18)
Terminals (page 19) Terminals (page 20)

Note: Some controllers do not allowdirect RS485 connection, however RS485 connection is available for all
mentioned controllers via RS232/RS485 – MODBUS (I-LB+) (page 40).

Controller setup
(Setpoints/Comms settings group)

RS232(2) mode = MODBUS-DIRECT

RS485(2) conv. = ENABLED
RS232(2)MBCSpd = 9600, 19200, 38400, 57600

IGS-NT Communication Guide 36

Equipment

Equipment needed
Controller side -
Connection RS485 cable (page 85)
Other device
RS485 connection or RS485/USB converter
side

3.3.3 Ethernet – MODBUS/TCP (Direct)

Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NTC-BB IM-NT-BB

Connection
NO YES YES YES NO
applicable
Available external external
ETHERNET ETHERNET ETHERNET
ports bridge bridge
More info IG/IS/IM-NTC-BB – Communications (page 10)

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection
NO NO NO NO
applicable
Available
external bridge external bridge external bridge external bridge
ports

Note: The communication port for Modbus TCP is 502.

Note: Ethernet Modbus/TCP connection is available for all mentioned controllers via Ethernet – MODBUS
(IB-NT) (page 41).

Number of clients connected simultaneously

1 client Modbus TCP/IP
Ethernet connection settings
Perform the connection settings the same way as for Ethernet connection (Direct) (page 25).

IGS-NT Communication Guide 37

Modbus/TCP access code
Every Modbus/TCP session has to be started with writing the access code from the Modbus/TCP client to the
controller. If the session is closed and reopened again the access code must be written again. The session
can be closed by the client or the controller closes the session automatically if there is no activity from the
client side for 15 s.
There are new dedicated registers for entering the AccessCode via Modbus/TCP.
The register numbers are 46339-46346 (register address 6338-6345).
The previous method using register address 24535 remains working as well.
Example of the Modbus message is following (in HEX):

01 10 18 C2 00 08 10 30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 FE F3
01 Controller address
10 Modbus function (16dec – Write multiple registers)
18C2 Register address (18C2hex = 6338dec = register 46339)
0008 Number of registers
10 Length of the data (Number of registers x 2B)
30000000... Access code string (16 chars, null-terminated, ASCII, here “0”)
FEF3 CRC

Some devices do not support the modbus function 16. In this case can be the access code writen in controller
as one register No. 46339 using the function 6. The access code has to be the number in the range 0 to
65535.

Equipment

Equipment needed
Controller side -
Ethernet cable (page 88) to LAN, for point to point connection between PC and
Connection
controller use cross-wired cable
PC side ETHERNET connection

For more informations about Modbusimplementation to ComAp controllers see Modbus Communication
on page 94.

IGS-NT Communication Guide 38

3.4 Modbus – Multiple Gen-sets
3.4.1 RS485 – MODBUS

Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NTC-BB IM-NT-BB

Connection
NO YES YES YES NO
applicable
Available
- RS485(2) RS485(2) RS485(2) -
ports
More info IG/IS/IM-NTC-BB – Communications (page 10)

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection
NO YES YES NO
applicable
Available RS232(1)
RS232(1) RS232(2) -
ports RS232(2)
IG-NT – IG-NTC – IS-NT-BB –
More info Communications, Communication, Communications,
Terminals (page 18) Terminals (page 19) Terminals (page 20)

Controller setup
(Setpoints/Comms settings group)

RS232(2) mode = MODBUS-DIRECT

RS485(2) conv. = ENABLED
RS232(2)MBCSpd = 9600, 19200, 38400, 57600

Note: For gen-set control for longer distance can be RS485 used. IG-NT-BB has no possibility of direct
connection to RS485 bus. This controller provides RS232 port only. External converter from RS232 to RS485
may be a good solution (for example...ADAM).

IGS-NT Communication Guide 39

Equipment

Equipment needed
Controller side -
Connection RS485 cable (page 85) - Twisted pair, length up to 1 km
Other device
RS485 connection or RS485/RS232 or USB converter
side

3.4.2 RS232/RS485 – MODBUS (I-LB+)

Note: I-LB+ module enables monitoring and configuration up to 32 controllers interconnected via CAN2
intercontroller bus. It is also possible to use I-LB+ for single controller connection.

I-LB+ hardware setup

(all jumpers in those positions)

HW/SW control No matter

ComAp/Modbus Close
Selection of CAN address. Open = ADDR1, Close = ADDR2 It is possible to use up
to two I-LB+ devices in direct mode on CAN2 bus. Let jumper open in case of using
ADDR1/ADDR2
one I-LB+ module. Other I-LB module has to have this jumper closed. (read more
about Comms extension – I-LB+ Local bridge (page 62))
DIRECT/MODEM No matter
RS485/RS232 Selection of communication port (jumper is in RS232 or RS485 position)
Selection of communication speed by jumpers P13, P14 to 9600, 19200, 38400,
Comm. speed.
57600 bps
RS485 120 Ω Open = terminator not connected, Close = terminator connected
CAN 120 Ω Open = terminator not connected, Close = terminator connected

IGS-NT Communication Guide 40

Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NT-BB IM-NTC-BB

Connection
YES YES YES YES YES
applicable
RS232 on I- RS232 on I- RS232 on I- RS232 on I-
Available LB+ LB+ LB+ LB+ RS232 on I-LB+
ports RS485 on I- RS485 on I- RS485 on I- RS485 on I- RS485 on I-LB+
LB+ LB+ LB+ LB+
More info Comms extension – I-LB+ Local bridge (page 62)

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection
NO YES YES NO
applicable
Available RS232 on I-LB+ RS232 on I-LB+ RS232 on I-LB+ RS232 on I-LB+
ports RS485 on I-LB+ RS485on I-LB+ RS485on I-LB+ RS485on I-LB+
More info Comms extension – I-LB+ Local bridge (page 62)

Equipment

Equipment needed
Controller side I-LB+ unit
Connection RS232 cable (page 86), RS485 cable (page 85)
RS232 connection or RS232/USB converter
PC side
RS485 connection or RS485/USB converter

3.4.3 Ethernet – MODBUS (IB-NT)

Up to 32 controllers can be monitored via one IB-NT. Response time of a system with this type of connection
depends on number of controllers, higher number of controllers means slower system response time.

IGS-NT Communication Guide 41

Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NT-BB IM-NTC-BB

Connection
NO YES YES NO YES
applicable
Available
external bridge external bridge external bridge external bridge external bridge
ports/
IB-NT IB-NT IB-NT IB-NT IB-NT
modules

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection
YES YES YES YES
applicable
Available
external bridge external bridge external bridge external bridge
ports/
IB-NT IB-NT IB-NT IB-NT
modules

Note: For more information about IB-NT internet bridge read IB-NT Global Guide.

Ethernet – MODBUS/TCP (Direct)

Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NTC-BB IM-NT-BB

Connection
YES YES YES YES YES
applicable
Available external external
ETHERNET ETHERNET ETHERNET
ports bridge bridge
More info IG/IS/IM-NTC-BB – Communications (page 10)

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection
NO NO NO NO
applicable
Available
external bridge external bridge external bridge external bridge
ports

IGS-NT Communication Guide 42

Note: The communication port for Modbus TCP is 502.

Note: Ethernet Modbus/TCP connection is available for all mentioned controllers via Ethernet – MODBUS
(IB-NT) (page 41).

Number of clients connected simultaneously

1 client Modbus TCP/IP
Ethernet connection settings
Perform the connection settings the same way as for Ethernet connection (Direct) (page 25).

Equipment

Equipment needed
Controller side -
Ethernet cable (page 88) to LAN, for point to point connection between PC and
Connection
controller use cross-wired cable
PC side ETHERNET connection

For more information about Modbus implementation to ComAp controllers see Modbus Communication on
page 94.

3.5 Access to password protected objects

Dedicated communication objects are setpoints and commands that are protected by a password against
writing. The set of protected objects is given in the controller configuration and is fixed for a particular
controller.
In IG/IS-NT controllers it is possible to specify access levels to protected objects for 8 different users. For
each user a set of access attributes is defined and each of them has his password. The user can gain the right
for writing to 8 groups of objects with different access levels by entering his password. The objects are
assigned into groups in the controller configuration. For example setpoints in the ProcessControl group can
be configured in GenConfig on Setpoints card:

Each user has his identification number (0 – 7). User with identification number 0 has an exceptional position.
This user has access to all groups of protected objects (this access cannot be changed anyhow) and can

IGS-NT Communication Guide 43

define groups of access attributes to other users (1 – 7), reset their password and set their name (alias of an
identification number). Entering of password must be foregone by writing of a user identification number.
6 back to Applications overview

IGS-NT Communication Guide 44

4 Remote monitoring
4.1 Connection to Internet (Direct) 45
4.2 Internet connection via AirGate 47
4.3 WebSupervisor 50
4.4 Web interface 51
4.5 Internet connection via cellular network 56
4.6 Active SMS 57
4.7 Access Lock 59

6 back to Table of contents

4.1 Connection to Internet (Direct)

4.1.1 Controllers
Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NTC-BB IM-NT-BB
Connection
NO YES YES YES NO
applicable
Available external external
ETHERNET ETHERNET ETHERNET
ports bridge bridge
More info IG/IS/IM-NTC-BB – Communications (page 10)

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection
NO NO NO NO
applicable
Available
external bridge external bridge external bridge external bridge
ports

IGS-NT Communication Guide 45

Note: Internet connection is available for all mentioned controllers via Ethernet – MODBUS (IB-NT) (page
41).

Number of clients connected simultaneously

All of the connections shown above, should be combined with:

1x Modbus TCP connection or 1x SNMPv1 Manager connection (switching is between MODBUS and
SNMP is made via configuration web interface)
2x clients of SCADA web interface (IGS-NT only, for the IS2 GAS and GSC controllers plus theirs families
is SCADA web access not available anymore).
Ethernet connection settings
Perform the connection settings the same way as for Ethernet connection (Direct) (page 25).
How to open Internet connection in InteliMonitor?
Use the same procedure as well as for Ethernet connection (Direct) (page 33).
Using a web browser
Ethernet connection to controller makes possible using any web browser for basic monitoring and adjustment
of the controller. Simply put the IP address of the module into the address line in your web browser like
http://192.168.1.254 and then enter access code. In case of connection from web browser there is 5 minutes
timeout after closing the browser window. After that the client is automatically logged out.
Note: The IP addresses of the controllers must be accessible from the remote computer. If the remote
computer is connected into another LAN segment than the gen-sets are, there must be a gateway(s) that
enable direct traffic between the segments. If the remote computer is connected via Internet, then the internet
gateway of the LAN where gen-sets are connected must have public IP address, must allow incoming traffic
and must provide port forwarding from the external public IP to the different internal gen-set IPs according to
the port used.

Image 4.1 Internet gateway configuration example (port forwarding)

IGS-NT Communication Guide 46

4.1.2 Equipment
Equipment needed
Controller side -
Ethernet cable (page 88) to LAN, for point to point connection between PC and
Connection
controller use cross-wired cable
PC side ETHERNET connection

4.1.3 Available software for IG/IS-NT

Software GenConfig InteliMonitor WinScope
Applicable YES YES YES

4.2 Internet connection via AirGate

IMPORTANT: Every new device must be authorized after first time connected to the AirGate,
registered and obtained the AirGate ID. Go to the web page airgate.comap.cz to authorize your
device.

This connection type is used for connection to controllers/sites, that are connected to the Internet, however
they do not have public and static IP address. The controllers connect by themselves to the AirGate server
and cyclically ask whether there is a connection request from a client or not. On the other side the clients
(InteliMonitor, WebSupervisor) connect to the AirGate server instead of connecting directly to the controller.
The server then creates a "tunnel" between the client and the controller. Internet connection via AirGate
server is supported by controllers IG-NTC-BB and IS-NTC-BB with ethernet connection possibility. The
connection to ethernet is realized the same way as Connection to Internet (Direct) (page 45).
IMPORTANT: To avoid unauthorized access to the controller change the access code and keep it
secret!

IGS-NT Communication Guide 47

Image 4.2 Principple of AirGate connection

Firewall adjustment
Client side: allow outgoing traffic to any IP address, port TCP/44445.
Controller side: allow outgoing traffic to any IP address, port TCP/23 and UDP/6127

Note: No tunnels (port forwarding) are required for AirGate connection.

AirGate connection settings

Parameters can be set via any type of connection (USB, RS232, Ethernet). Setup is provided via
InteliMonitor. For ethernet connection set these parameters in Comms Settings group:

IGS-NT Communication Guide 48

Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NTC-BB IM-NT-BB

Connection applicable NO YES YES YES NO
external external
Available ports RS232(2) RS232(2) RS232(2)
bridge IB-NT bridge IB-NT
IG/IS/IM-NTC-BB – Communications
More info
(page 10)

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection applicable NO NO NO NO
external bridge external bridge external bridge external bridge
Available ports
IB-NT IB-NT IB-NT IB-NT

IMPORTANT: Connection via AirGate is supported by controllers with direct connection to LAN
only or via IB-NT module.

Connection to InteliMonitor via AirGate server

Select the AirGate connection type.
Fill-in the correct AirGate ID for each controller.
Enter the AirGate server address.

Note: You will obtain the AirGate ID by the registration of the particular controller on the AirGate server. Set
all setpoints in Comms Settings group according to AirGate connectionsettings and connect controller to
LAN. Controller AirGate ID will be viewed on the screen.

Note: This function is available in InteliMonitor ver. 2.6 and higher. Please watch the ComAp a.s. web site for
detailed information.

Note: Although the controllers in your site are not connected together by the CAN2 bus they must have
different controller addresses.

IGS-NT Communication Guide 49

Image 4.3 AirGate connection screen

4.3 WebSupervisor
WebSupervisor is web based system designed for monitoring and controlling ComAp controllers via the
internet. This system offers a number of beneficial features that help optimize revenue for machinery fleets,
as each piece of equipment can be individually monitored for all important operation values.

Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NTC-BB IM-NT-BB

Connection applicable YES YES YES YES YES
external external
Available ports bridge IB- ETHERNET ETHERNET ETHERNET bridge IB-
NT NT
More info IG/IS/IM-NTC-BB – Communications (page 10)

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection applicable YES YES YES YES
external bridge external bridge external bridge external bridge
Available ports
IB-NT IB-NT IB-NT IB-NT

WebSupervisor connection settings

Connection of controllers with direct Ethernet port can be realized two diferent ways:
Internet connection via AirGate: No fixed and public IP address is needed. Connect and set the controller
the same way as for Internet connection via AirGate (page 47).
Internet connection without AirGate: Controller has to have fixed and public IP address. Connect and set
the controller the same way as for Direct PC connection to Single Gen-set (page 22).
Connection of all controllers can be realized using IB-NT external bridge.

IGS-NT Communication Guide 50

First steps

Start to using
How to Register (Become a User of the WebSupervisor) and Login?
You can start using WebSupervisor without installation any special software on your PC.
To start and login into WebSupervisor open www.websupervisor.net in your browser and follow the steps at
WebSupervisor.
More information about WebSupervisor you can get at:
www.websupervisor.net/download/WebSupervisor 4.0 - Global Guide.pdf

4.4 Web interface

The web interface is intended to monitor the controller from a web browser. Static IP address is required for
this function as you must know the IP address to put it into the browser. Public IP address or port forwarding is
required if you want to see the web pages from the Internet.

IGS-NT Communication Guide 51

Image 4.4 Port forwarding example for Web connection

The web server is designed for basic monitoring and adjustment of the controller using a web browser. Put
the Controller IP address into the browser. You will be asked for the controller access code prior to entering
the controller web.
Note: The web server is optimized for IE6 or higher and screen resolution 1024 × 768 pixels.

Note: For update inbuilt Ethernet module see IB-COM manual. Or add suffix to IP address “/sp_index.htm”
and follow instructions, eg: “192.168.1.1/sp_index.htm”.

IMPORTANT: Do not use the browser navigation buttons as "Back", "Forward" or "Reload". Use
the links and the reload button located in the toolbar instead.

4.4.1 Scada
Click to the SCADA link in the toolbar to display the SCADA page. The SCADA page is also the main page
which is displayed by default if you just put the controller address into the browser.
Note: The SCADA page layout may differ according to the firmware branch, version and application. Certain
old firmware versions does not support web access at all.

IGS-NT Communication Guide 52

4.4.2 Measurement
Click to the MEASUREMENT link in the toolbar to display the measurement page. Then click to the required
group name in the left box to display values of the group in the right box.
Note: The measurement page is automatically refreshed every 60 seconds.

4.4.3 Setpoints
Click to the Setpoints link in the toolbar to display the setpoints page.
Click to the required group name in the left box to display setpoints of the group in the right box.

IGS-NT Communication Guide 53

Click to the required setpoint name or value to change the value. If the respective setpoint is protected by
password, which is indicated by a lock icon by the setpoint name, you have to click on the "Controller
password" icon located in the toolbar and then enter valid password.
Note: The setpoint page is automatically refreshed every 60 seconds. If an another user changes a setpoint
from other terminal, the web page will not show this change immediately as e.g. InteliMonitor.

4.4.4 History
Click to the HISTORY link in the toolbar to display the history page.
Use the control buttons to move within the history file.

Note: The history page is automatically refreshed every 5 minutes. If a new record appears in the controller,
the web page will not show it immediately as e.g. InteliMonitor.

IGS-NT Communication Guide 54

4.4.5 Web server adjustment
Click to the "Webserver settings" icon in the toolbar to display the settings page.
Select the controller language the web pages will appear in.
Select the rate of automatic refresh of the SCADA page.

Communication module firmware upgrade

Firmware in inbuilt communication module (IB-COM) can be upgraded. For upgrade type in your web browser
IP address of controller and behind the address type “/SP_INDEX.HTM”.
For more information please follow manual related to IB-COM.

IGS-NT Communication Guide 55

4.5 Internet connection via cellular network
4.5.1 Connection via Internet bridge IB-NT
What is InternetBridge-NT?
InteliBridge-NT is a communication module that allows connection of a single controller as well as whole site
to the Internet or Local area network. The connection to the Internet can be via built-in cellular modem
supporting 2G and 3G networks or Ethernet cable. For 4G network please use InteliBridge-NT 4G.
The module can be used for controllers from following product lines: IG-NT, IS-NT and IC-NT.
Note: For proper operation it is necessary to update the controller firmware to a version which supports IB-
NT. For IG-NT and IS-NT standard branch the first version supporting IB-NT is 2.6. For more information
about IB-NT read IB-NT Global Guide.

Features
Direct ethernet connection to ComAp PC programs
AirGate® support
SMTP protocol for sending of active emails from the controller
HTTP protocol for web-based monitoring and adjustment
Modbus/TCP server
SNMP protocol

4.5.2 Active Call

Function
When active calls are activated for alarms on site (warning, shut-down…) the controller calls to the
preselected telephone number and sends the ANT archive file.
Software (e.g. InteliMonitor) on the PC side must be running and waiting for active call.

Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NT-BB IM-NTC-BB

Connection
YES YES YES YES YES
applicable

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection
YES YES YES YES
applicable

Controller setup
(Setpoints/Comms settings group)

Act. calls/SMS: AcallCH1(-3)-Type = DATA

Act. calls/SMS: AcallCH1(-3)-Addr = telephone number

IGS-NT Communication Guide 56

4.6 Active SMS

Function
When SMS active calls are activated for alarms on site (warning, shut-down…) the controller sends SMS
message to the predefined GSM number.

Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NT-BB IM-NTC-BB

Connection applicable YES YES YES YES YES

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection applicable YES YES YES YES

Equipment

Equipment needed
Controller side GSM Modem or I-LB+ + GSM Modem
Connection GSM
PC side GSM Mobile Phone

Controller setup
(Setpoints/Comms settings group)

Act. Calls/SMS: AcallCH1(-3)-Type = SMS

Act. calls/SMS: AcallCH1(-3)-Addr = mobil phone number
Act. calls/Acall+SMS lang: AcallCH1(-3)-Addr = 1, 2, 3, ...

Note: Maximum length of SMS sent in not default language is 70 characters. Number of language
corresponds with number of language in GenConfig (card “Languages”).

Example:
SMS in format
#Gen-set name:AL=(Wrn PrimWater temp, !Emergency stop)
is sent in case that the primary water temperature exceeded the warning limit and Emergency stop input
has been deactivated.

IGS-NT Communication Guide 57

4.6.1 Active E-mail (SMS E-mail)
Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NTC-BB IM-NT-BB

Connection
YES YES YES YES YES
applicable
external external
Available
bridge ETHERNET ETHERNET ETHERNET bridge
ports
IB-NT IB-NT
More info IG/IS/IM-NTC-BB – Communications (page 10)

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection
YES YES YES YES
applicable
Available external bridge external bridge
ETHERNET ETHERNET
ports IB-NT IB-NT
IG/IS/IM-NTC-BB – Communications
More info
(page 10)

Equipment

Equipment needed
Controller side Ethernet connection
Connection Internet
PC side Ethernet connection, e-mail message box

Function
When active e-mails are activated for alarms on site (warning, shut-down…) the controller sends e-mail
message to the predefined e-mail address. The function and settings for Direct Ethernet port connection and
connection via external bridge IG-IB are the same.

Controller setup
(Setpoints/Comms settings group)

Act. calls/SMS: AcallCH1(-3)-Type = IB-E-MAIL

Act. calls/SMS: AcallCH1(-3)-Addr = email address (maximum length of email address is 31 characters)
Act. calls/Acall+SMS lang: AcallCH1(-3)-Addr = 1, 2, 3, ...

Note: Number of language corresponds with number of language in GenConfig (card “Languages”).

IGS-NT Communication Guide 58

4.7 Access Lock
This functionality limits access to the controller, from fully control to monitoring only (it means that commands
are blocked, no setpoint changes).
The reading all values is still available, change the screens on displays is available. Access Lock is located at
LBI card in GenConfig and can be attached to binary input.
6 back to Remote monitoring

IGS-NT Communication Guide 59

5 Peripheral modules
5.1 Displays 60
5.2 Comms extension – I-LB+ Local bridge 62
5.3 I-CR Module for CAN Bus Extension 65
5.4 I-CR-R Module for CAN Bus Redundancy 66
5.5 I-CR-R module properties 68
5.6 Commands for IGS-NT and InteliSys Gas 71
5.7 Commands for IM-NT 73
5.8 Commands for ID-BB 75
5.9 Commands for IS-GSC 77

6 back to Table of contents

5.1 Displays
5.1.1 InteliVision 12Touch display
Controllers

Controllers IG-NT-BB IG-NTC-BB IS-NTC-BB IM-NT-BB IM-NTC-BB

Connection applicable YES YES YES YES YES
RS485(1 RS485(1
RS485(2),
RS485(1), and 2)*, and 2)*,
Physical port CAN2,
CAN2 CAN2, CAN2, CAN2
Ethernet
Ethernet Ethernet

Controllers IG-NT IG-NTC IS-NT-BB IM-NT

Connection applicable NO NO NO NO
Physical port - - - -

Note: * For using second RS485(1) for IV12T connectivity, you need to check / modify
Setpoints->Comm settings -> RS485(1)conv. -> Enabled

Note: For more information please see www.comap-control.com/products/detail/intelivision-12touch

IGS-NT Communication Guide 60

5.1.2 InteliVision 8 display
Controllers

Controllers IG-NT-BB IS-NTC-BB IM-NT-BB IG-NTC-BB IM-NTC-BB

Connection applicable YES YES YES YES YES
RS485(1), RS485(1), RS485(1), RS485(1), RS485(1),
Physical port
CAN2 CAN2 CAN2 CAN2 CAN2
IG/IS/IM-NTC-BB –
More info IG/IM-NT-BB – Terminal (page 15)
Terminals (page 11)

Controllers IG-NT IM-NT IG-NTC IS-NT-BB

Connection applicable YES YES YES YES
RS485(1), RS485(1), RS485(1), RS485(1),
Physical port
CAN2 CAN2 CAN2 CAN2
IG/IS/IM-NTC-BB – Terminals
More info IG/IM-NT-BB – Terminal (page 15)
(page 11)

It is possible to connect up to 3 IV8 displays to RS485(1) terminal Link (see IG/IS/IM-NTC-BB – Terminals
on page 11) and up to 2 displays on CAN2 bus.
Note: Connection InteliVision 8 to IG/IS-NT controllers is described in InteliVision8 Global Guide.

Note: In case of connection IV8 to controller via CAN(2) bus the collision can occur. IV8 is in this case
connected via 123 and 124 CAN2 physical address, that can be used for other peripheral modules (see the
table bellow). Make sure, that real CAN2 physical address (123 and 124) are not shared by other devices
such as I-LB+ module.

Real I-LB
I-LB I-LB+ IG-IB IG-IB IV- I-RD
CAN2 IG-MU (local)
(modem) (USB) (IBConfig<1,5) (IBConfig>1,6) Display -CAN
Address (RS232/485)
122 - - addr. 2 - - - - -
123 addr. 2 addr. 2 - addr. 1 addr. 1 addr. 2 addr. 2 addr. 2
124 addr. 1 addr. 1 - addr. 2 addr. 2 addr. 1 addr. 1 addr. 1
125 modem - addr. 1 - - - - -

Controller setup
(Setpoints/Comms settings group)

RS485(1) conv. = DISABLED

IGS-NT Communication Guide 61

5.1.3 InteliVision 5 display
Controllers

Controllers IG-NT-BB IM-NT-BB IG-NTC-BB IS-NTC-BB IM-NTC-BB

Connection applicable YES YES YES YES YES
Physical port RS485(1) RS485(1) RS485(1) RS485(1) RS485(1)
IG/IM-NT-BB – Terminal
More info IG/IS/IM-NTC-BB – Terminals (page 11)
(page 15)

Controllers IG-NT IM-NT IG-NTC IS-NT-BB

Connection applicable YES YES YES YES
Physical port RS485(1) RS485(1) RS485(1) RS485(1)
IG/IS/IM-NTC-BB – Terminals
More info IG/IM-NT-BB – Terminal (page 15)
(page 11)

It is possible to connect up to 3 InteliVision 5 displays to RS485(1) terminal Link (IG/IS/IM-NTC-BB –

Terminals (page 11)).
Note: Connection InteliVision 5 to IG/IS-NT controllers is described in InteliVision5 Global Guide.

Controller setup
(Setpoints/Comms settings group)

RS485(1) conv. = DISABLED

5.2 Comms extension – I-LB+ Local bridge

I-LB+ is communication modules for communication with all devices connected to CAN2 bus. I-LB+ is
successors of the IG-MU unit designed to be used with IG/IS controllers. It therefore provides additional
communication port and higher communication speed. Speed for direct/modem connection can be up to
57600 bps. I-LB+ can be connected with PC via USB, RS232 or RS485. I-LB+ is with USB port (speed ≈
115200 bps).

IGS-NT Communication Guide 62

IGS-NT Communication Guide 63
5.2.1 Jumper setings
Jumper Description State
P1 CAN terminating resistor Opened – not connect
P2 RS485 terminating resistor Opened – not connect
P3 RS232 or RS485 1–2 – active RS485
P8 USB enable/disable Opened – disabled
P13 Modbus rate 9600, 19200, 38400, 57600 bps
P14 Modbus rate (according to picture: O = Open, C = Close.
P15 HW or SW modem control Opened – HW control
P16 ComAp or Modbus Opened – ComAp protocol
P17 ADR1 or ADR2 Opened – ADR1
P18 Direct or Modem Opened – Direct

According Addr.1/Addr.2 setings real CAN address is assigned to port

RS232/485 DIRECT MODEM USB
Addr. 1 124 125 123
Addr. 2 123 122 124

It is possible to use those combinations simultaneously:

2x direct RS232/RS485 and 2x MODEM (USB communication has to be disabled, P8 is opened)
1x USB and 1x RS232/RS485

5.2.2 Jumper selection tree

ComAp/ModBus – selects between ComAp PC tools (InteliMonitor, WinScope, ...) and third party PC SW for
monitoring:
ComAp
Direct/Modem – selects between direct connection (via RS232 or RS485) and modem connection
type
DIRECT

RS232/RS485 – selection of serial communication type

ADR1/ADR2 – selection between two available local communication channels; if I-LB+ is used,
the USB communication automatically occupies the other channel
MODEM

HW/SW control – selection between modems with full interface

ADR1/ADR2 – selection between two available modem communication channels; IG/IS-NT

controllers only, in ID the secondary modem channel not available
Setting RS232/RS485 jumper to RS232 position is obligatory
ModBus (not available at USB port of I-LB+, USB port always works in ComAp mode)
Direct/Modem – selects between direct connection (via RS232 or RS485) and modem connection
type

IGS-NT Communication Guide 64

DIRECT

RS232/RS485– selection of serial communication type

ADR1/ADR2 – selection between two available local communication channels; if I-LB+ is used,
the USB communication automatically occupies the other channel
MODEM

ADR1/ADR2 – selection between two available modem communication channels; IG/IS-NT

controllers only, in ID the secondary modem channel not available
Setting HW/SW control has no influence; a modem with HW control is always expected in this
mode
ModBus Rate (9600 / 19200 / 38400 / 57600 bps) – selects the communication speed when Modbus
protocol is selected, no matter if in Direct or Modem mode
Note: For more information read IGS-NT accessory modules manual.

5.3 I-CR Module for CAN Bus Extension

If the distance between units is too high to fit into the 200 m limit (or 900 m for 8 controllers), CAN repeater
module (I-CR) can be used to extend it.
Typical case – in line extension:

Connection of I-LB, combination of different CAN bus speeds:

This connection allows PC communication to all controllers in the system (e.g. via InteliMonitor), including a
distant InteliMains unit.

IGS-NT Communication Guide 65

5.3.1 I-CR module functions
Intercontroller CANbus extension (one or more I-CR modules can be used).
Intercontroller CAN bus bus-tie bridging – makes groups of controllers in segments A and B“ invisible” one
for another depending on bus-tie breaker state, keeping the PC communication (I-LB, IG-IB) in function for
all controllers.
Peripheral CAN bus extension

5.3.2 I-CR configuration jumpers

P2 Forces 250 kbps mode (32C) on CAN A, otherwise speed autodetection is used.
P3 Forces 250 kbps mode (32C) on CAN B, otherwise speed autodetection is used.
P4 Activates Filter mode (bus-tie bridging).
P5 Forces alternate controller address 3 for bus-tie status reading (default controller address is 4).
P10 If “H” network configuration used (two I-CR units), it must be switched to RS485 mode.

Note: For more detailed information about I-CR, see the Application sheet “Extending the CAN bus” or IGS-
NT Installation guide.

Note: CAN bus has to be terminated at both ends. In the case of surge hazard (connection out of building in
case of storm etc.) see the “CAN and RS485 bus wiring” chapter of the IGS-NT Installation Guide.

5.4 I-CR-R Module for CAN Bus Redundancy

This module is intended to provide CAN bus redundancy in applications where IG/IS-NT controllers are
placed in several switchboards that need to be interconnected by the CAN bus communication line and where
there is essential to keep the line working. As a side effect, the module also provides the CAN bus line
extension.
As the CAN bus provides data exchange needed for Load Sharing and VAr Sharing and also for Power
Management features, it’s redundancy can be very important in complex systems with more engines, more
mains incomers.
Note: I-CR-R may be used as a redundancy module for a maximum of 20 controllers (counted all controllers
on the CAN2 bus).
For usage I-CR-R in an installation of more as 20 controllers please contact our technical support for another
redundancy solution.

IGS-NT Communication Guide 66

Typical case – several controllers, each one in separate switchboard

More controllers within common switchboard

IGS-NT Communication Guide 67

Connection of I-LB+ or other bridging modules

Note: If I-LB+ (or other bridging module) is to monitor all the site, it is recommended to place it at the position
1. If there is preferably monitored one group (within one switchboard) and the other controllers not at all or
only seldom, option 2 is more suitable. Remote connection to let’s say controller 7 is possible in this case but
data transfer will be quite slow.

5.5 I-CR-R module properties

5.5.1 I-CR-R module functions
Intercontroller CAN bus redundancy – basic description of terminology used:
Local CAN bus – a bus going from the module to the local controller(s) = within one switchboard;
name on the sticker CAN1 CONTROLLER; in standard installation (with no redundancy) this would be
the intercontroller bus (CAN2)
Primary intercontroller CAN bus – a bus interconnecting all I-CR-R modules and providing 1 to 1
replacement of standard intercontroller CAN bus (CAN2); name on the sticker CAN EMS
Backup intercontroller RS485 bus – secondary bus interconnecting all I-CR-R modules; transmits only
intercontroller communication (Load Sharing, VAr Sharing, Power Management), not the remote
communication (I-LB, IG-IB connection to a PC monitoring tool); controller with address 1 must be
presented in the system to make backup bus working
The module preferably uses the Primary CAN bus line for data transfer. However, if the connection from
any of the controllers connected to other I-CR-R modules is broken the module automatically re-routes it
to the Backup RS485 line and continues in operation. From controllers’ point of view, no data transfer
interruption is observed.
It is possible to indicate the problem with Primary or Backup buses using “fake” SHBOUT6 message
which is normally used for signal sharing among the controllers. See jumper description further in the text.
Intercontroller CAN bus extension – each I-CR-R module provides also CAN bus extension in the same
way as I-CR module, i.e. creates segments of the bus where the length of the line is limited within the
segment only, not within the whole system.

IGS-NT Communication Guide 68

Note: The redundancy system only makes sense if the cables of Primary and Backup buses are placed
physically into different cable routes! Placing them into the same cable route increases the risk of damage of
both cables at once.

5.5.2 I-CR-R configuration jumpers

P3 – Forces 8C (50 kbps) mode on Primary intercontroller bus (name at the original sticker CAN EMS); if not
active, 32C (250 kbps) mode is automatically used.
Note: All I-CR-R modules within the system must be switched to the same mode, otherwise the primary
intercontroller CAN bus won’t work.

P4 – Enables transmission of SHBOUT6 message to local CAN bus; the message is intended to transmit
indication and error flags from the module to the controllers to make the status of the module visible to the
customers. By sending this message, I-CR-R is “cheating” the controllers in it’s local CANbus because it is
pretending to be one of the other controllers (from intercontroller bus) sending this message. Do not use the
real source for SHBOUT6 message if this feature is enabled.

Contents of the SHBOUT6 message

Position
Description
(bit 8 = highest)
bit 8 Always 1 (reserved)
bit 7 Always 1 (reserved)
bit 6 Always 0 (reserved)
bit 5 Always 0 (reserved)
bit 4 Logical 1: Modbus Master (controller with address 1 on the line) is detected
RS485 overload occurred (= more data in the queue than could be transmitted via
bit 3
this line)
bit 2 Logical 1: indicates this (local) controller is Modbus Master
Difference of “visible” controllers between Primary and Backup bus occurred ->
bit 1
Probably failure in one of the intercontroller lines

Note: Typically, configure a Warning-type protection on the lowest bit signal of this message. The signal
becomes active if part of controllers normally “visible” through the Primary or Backup bus is not visible
anymore; this means the cable was cut or shorted or otherwise damaged and doesn’t connect anymore some
part or all the controllers.

Note: Because bit 1 activates with the difference between Primary and Backup buses it is able to indicate
failures of both Primary and Backup buses, so even if Primary bus works fine, it is able to show the problem
with Backup bus to allow the technician to repair it before it actually becomes a problem. Otherwise the
problem with the Backup bus would stay hidden until Primary bus would have failed and then the
intercontroller communication would stop working completely.

P10 – Must be switched to RS485 mode for the redundancy line to work..

IGS-NT Communication Guide 69

5.5.3 I-CR-R indication and diagnostic LEDs
LED State Function
If all other LEDs except of the PWR LED are dark the FW is located in a
Lights wrong type of module; please make sure that I-CB/CAT GAS dongle is
PWR
present on terminal P5
Dark If all LEDs are dark there is no power supply to the module
Lights Firmware is OK and running
Slow
Firmware corrupted (periodic Watchdog reset)
flash
RUN
RS485 was interrupted or no master found on RS485 backup bus;
Fast
(controller with address 1 must be presented in the system to make
flash
backup bus working)
Lights Local CAN bus is running OK (between controller and I-CR-R)
CONTR No controller detected on local CAN bus; on local bus, speed 32C is
Flashes
always expected (short connection only – within the switchboard)
Lights Communication on CAN bus between I-CR-Rs is running
CAN bus between I-CR-Rs was interrupted
EMS
Flashes Automatic speed detection 32C / 8C; enters this mode if no controller /
transmission detected on Primary intercontroller bus (for 2 s)
CAN CONTR
Flashes Local CAN interface activity
(TxC, RxC)
CAN EMS
Flashes Primary intercontroller CAN interface activity
(TxC, RxC)
COM
Flashes Backup intercontroller RS485 interface activity
(TxD, RxD)

IGS-NT Communication Guide 70

5.6 Commands for IGS-NT and InteliSys Gas
First it is necessary to enter an appropriate user and his password first to enable commands, if these are
protected by level 1-7.
Note: Use register number 46359 for writing Modbus commands to a controller.

Command() Meaning Argument() Return Value(*)

000001FF OK
Start the engine – in Argument
01FE0000
one step (page 109) 2 has not been
written
000002FE OK
Argument
Engine stop 02FD0000
1 2 has not been
written
Horn reset 04FB0000 000004FC OK
Fault reset 08F70000 000008F8 OK
ECU Fault reset 10EF0000 000010F0 OK
Wrong
other 1
argument

IGS-NT Communication Guide 71

Command(*) Meaning Argument(*) Return Value(*)
Close/open generator 000011EF OK
circuit breaker (IGS- Argument
11EE0000
NT) 2 has not been
Clutch ON/OFF (ID) written
000011F0 OK
Close generator Argument
11EF0000
circuit breaker 2 has not been
written
000011F1 OK
Open generator circuit Argument
11F00000
breaker 2 has not been
written
000012EE OK
2
Close/open mains Argument
12ED0000
circuit breaker 2 has not been
written
000012EF OK
Close mains circuit Argument
12EE0000
breaker 2 has not been
written
000012F0 OK
Open mains circuit Argument
12EF0000
breaker 2 has not been
written
Wrong
other 1
argument
00004445 OK
Reset from Init state
5 44440000 Not possible
(#1) 1
to perform
0000007D OK
7 Statistics reset 007C0000 Not possible
1
to perform
8 Set kWh counter New value N/A
C Set kVAhr counter New value N/A
Set counter of engine
D New value N/A
starts
E Set runhours counter New value N/A
Set counter of
19 unsuccessful engine New value N/A
starts
1A Remote Switch 1-8 – 00200000 N/A

IGS-NT Communication Guide 72

Command(*) Meaning Argument(*) Return Value(*)
Set (Remote Control
1-8) (page 106)
(RemoteControl1-8)
Reset binary output
RemoteSwitch1-8 00100000 N/A
(RemoteControl1-8)
Set pulse counters XXXXYYYY Upper value
OK
(IS-NT only) (XXXX) +1
Upper part of a
1F,20,21,22
new value; YYYY Not possible
1, 2
– Lower part of a to perform
new value)
0000YYYY 3 OK
23,24,25,26 Set ExtValue1-4 (#2) (YYYY - Not possible
1, 2
new value) to perform
0000YYYY 3 OK
Set ExtValue5-12 (#2)
AA,AB,AC,AD,AE,AF,B0,B1 (YYYY – new Not possible
(#3) 1, 2
value) to perform

Note:
(*) in HEX

#8
If the controller setpoints are not valid after it is switched on, the controller goes to a blocked state. In this state
it is necessary to modify the setpoints from the controller keypad and switch off and on the controller or from
the external terminal and unblock the controller by Reset from Init state command. Another condition
necessary to unblock the application function of the controller is valid configuration.
#2
Check if the setpoints ExtValueXLoLim and ExtValueXHiLim allow set the requested value to ExtValue.
#3
Available only in InteliSys Gas controller.
Note: Writing command and argument in one step is possible only with direct connection to controller. If the
communication is via bridge (IB-NT or I-LB+), it is necessary to write the command and argument in two
steps, please see Examples of Modbus Communication on page 96.

5.7 Commands for IM-NT

First it is necessary to enter an appropriate user and his password to enable commands, if these are
protected by level 1-7.

IGS-NT Communication Guide 73

Command Meaning Argument(*) Return Value(*)
000001FF OK
Start command 01FE0000 Argument has
2
not been written
000002FE OK
1 Stop command 02FD0000 Argument has
2
not been written
Horn reset 04FB0000 000004FC OK
Fault reset 08F70000 000008F8 OK
other 1 Wrong argument
000011EF OK
Close/open MGCB 11EE0000 Argument has
2
not been written
000011F0 OK
Close MGCB 11EF0000 Argument has
2
not been written
000011F1 OK
Open MGCB 11F00000 Argument has
2
not been written
2 000012EE OK
Close/open MCB / BTB 12ED0000 Argument has
2
not been written
000012EF OK
Close MCB / BTB 12EE0000 Argument has
2
not been written
000012F0 OK
Open MCB / BTB 12EF0000 Argument has
2
not been written
other 1 Wrong argument
00004445 OK
5 Reset from Init state (#1) 44440000 Not possible to
1
perform
8 Set kWh counter New value N/A
C Set kVAhr counter New value N/A
Set binary output RemoteSwitch1-
00200000x(**) N/A
8 (RemoteControl1-8)
00 1A Reset binary output
RemoteSwitch1-8 00100000x(**) N/A
(RemoteControl1-8)
3 OK
0000YYY (YYYY
23,24,25,26 Set ExtValue1-4 (#2) Not possible to
– new value) 1, 2
perform

IGS-NT Communication Guide 74

Note:
(*) in HEX

Note:
(**) x: switch1 =0, switch2 =1,... switch8 =7

#9
If the controller setpoints are not valid after it is switched on, the controller goes to a blocked state. In this state
it is necessary to modify the setpoints from the controller keypad and switch off and on the controller or from
the external terminal and unblock the controller by Reset from Init state command. Another condition
necessary to unblock the application function of the controller is valid configuration.
#2
Check if the setpoints ExtValueXLoLim and ExtValueXHiLim allow set the requested value to ExtValue.
6 back to Peripheral modules

5.8 Commands for ID-BB

First it is necessary to enter an appropriate user and his password to enable commands, if these are
protected by level 1-7.

Command Meaning Argument() Return Value()

000001FF OK
Start command 01FE0000 Argument has
2
not been written
000002FE OK
1 Stop command 02FD0000 Argument has
2
not been written
Horn reset 04FB0000 000004FC OK
Fault reset 08F70000 000008F8 OK
other 1 Wrong argument

IGS-NT Communication Guide 75

Command Meaning Argument(*) Return Value(*)
000011EF OK
Close/open MGCB 11EE0000 Argument has
2
not been written
000011F0 OK
Close MGCB 11EF0000 Argument has
2
not been written
000011F1 OK
Open MGCB 11F00000 Argument has
2
not been written
2 000012EE OK
Close/open MCB / BTB 12ED0000 Argument has
2
not been written
000012EF OK
Close MCB / BTB 12EE0000 Argument has
2
not been written
000012F0 OK
Open MCB / BTB 12EF0000 Argument has
2
not been written
other 1 Wrong argument
00004445 OK
5 Reset from Init state (#1) 44440000 Not possible to
1
perform
8 Set kWh counter New value N/A
C Set kVAhr counter New value N/A
Set binary output RemoteSwitch1-
00200000x(**) N/A
8 (RemoteControl1-8)
00 1A Reset binary output
RemoteSwitch1-8 00100000x(**) N/A
(RemoteControl1-8)
3 OK
0000YYY (YYYY
23,24,25,26 Set ExtValue1-4 (#2) Not possible to
– new value) 1, 2
perform

Note:
(*) in HEX

Note:
(**) x: switch1 =0, switch2 =1,... switch8 =7

IGS-NT Communication Guide 76

5.9 Commands for IS-GSC

First it is necessary to enter an appropriate user and his password to enable commands, if these are
protected by level 1-7.

Command Meaning Argument() Return Value()

IGS-NT Communication Guide 77

Note:
(*) in HEX

Note:
(**) x: switch1 =0, switch2 =1,... switch8 =7

IGS-NT Communication Guide 78

IGS-NT Communication Guide 79

6 Connection
6 back to Table of contents

6.1 Recommended CAN/RS485 connection

6.1.1 CAN bus connection
The bus has to be terminated by 120 Ω resistors at both ends.
The bus has to be terminated by 120 Ω resistors at both ends. External units can be connected on the CAN
bus line in any order, but keeping line arrangement (no tails, no star) is necessary.

Standard maximum bus length is 200 m for 32C CAN BUS MODE and 900 m for 8C CAN BUS MODE
(setpoint in comms setings group).
Shielded cable has to be used, shielding has to be connected to PE on one side (controller side).
Recommended data cables: BELDEN (www.belden.com)
For shorter distances (up to 50 m): 3105A Paired - EIA Industrial RS485 PLTC/CM (1x2 conductors)
For longer distances: 3106A Paired - EIA Industrial RS485 PLTC/CM (1x2+1 conductors)
In case of surge hazard: 3106A Paired - EIA Industrial RS485 PLTC/CM (1x2+1 conductors)

IGS-NT Communication Guide 80

6.1.2 CAN / fiber optic converter

Extends CAN bus length by 2000 m

Recommended converters
ADF Web HD67181FS or HD67181FSX (www.ADFweb.com)
www.adfweb.com/home/products/optics_fibres_can_bus_repeaters.asp
It is simple converter without redundant power supply. It has no alarm contact. Wide Power Supply
voltage: 8-19 V AC or 8-35 V DC. DIN mounting. Multimode version only. Number of converters in
cascade is limited. ComAp can't guarantee that 3rd party devices will work properly.
Recommended settings
Use converter Baud Rate Setting to 250 k if setpoint Comms setting: CAN bus mode is set to 32C in
controllers:

Use converter Baud Rate Setting to 50 k if setpoint Comms setting: CAN bus mode is set to 8C in controllers:

IMPORTANT: This device can extend total CAN bus length by 2000 m (HD67181FSX only) using
optical link, but total length of metallic CAN bus must not exceed these values:
200 m if setpoint Comms setting: CAN bus mode is set to 32C in controllers
900 m if setpoint Comms setting: CAN bus mode is set to 8C in controllers

IGS-NT Communication Guide 81

eks
www.eks-engel.de/produkte/fiber-optics/interface/dl-can-dl-can-r/
DL-CAN/1x13 – Point to point

DL-CAN/2x13 – Bus topology without redundancy

DL-CANR/2x13 – Redundant link topology

Industrial converters with dual (redundant) power supply 12-30 V DC. Alarm contacts available. DIN
mounting. Available multimode and single mode version.
IMPORTANT: This device can extend total CAN bus length by 100 km between 2 converters
(single mode version only) using optical link, but total length of metallic CAN bus must not
exceed these values:
200 m if setpoint Comms setting: CAN bus mode is set to 32C in controllers
900 m if setpoint Comms setting: CAN bus mode is set to 8C in controllers

6.1.3 CAN / Ethernet gateway

CAN-Ethernet gateway allows you to merge up to four CAN bus branches into one global CAN bus using
Ethernet connection. For detailed information about this option see:
www.comap-control.com/login?q=%2fsupport%2fknowledge-base%2fas10-ethernet-based-can-extension-
r1-(1)-pdf&nodeid=3134&class=ComAp.File

IGS-NT Communication Guide 82

Note: For CAN bus extension is possible to use I-CR module. It allows extension of CAN to more segments
with next 200 m addition length. for more information see I-CR Module for CAN Bus Extension on page
65.

6.1.4 RS485 connection

External units can be connected on the RS485 line in any order, but keeping line arrangement (no tails, no
star) is necessary.
Standard maximum line length is 1000 m.
Shielded cable has to be used, shielding has to be connected to PE on one side (controller side).
RS485 bus line has to be terminated by 120 Ω resistors on the both ends. Always check the number and
placement of terminating resistors in the RS485 bus line, only correct wiring ensures reliable operation!
Resistors must be placed at either end of the line (see picture), and correct number of resistors must be used!
Correct number can be checked using ohmmeter - when power supply for ALL devices on the RS485 bus line
is switched off, the resistance measured between A and B wire should be 60 Ω. For longer distances is
recommended to connect RS485 COM terminals between all controllers and cable shielding to the ground in
one point. External units can be connected on the RS485 bus line in any order, but line arrangement (no tails
no star) is necessary.

Availability of embedded galvanic separation of RS485 port in ComAp products

All InteliGen controllers - port RS485(1) NO
All InteliSys controllers - port RS485(1) NO
All InteliGen controllers - port RS485(2) YES
All InteliSys controllers - port RS485(2) YES
IG-Display, IS-Display - port RS485 YES
InteliVision 8 - port RS485, CAN YES
InteliVision 5 - port RS485 NO
InteliVision 5 RD - port RS485 YES
InteliVision 5 CAN - port CAN YES
InteliVision 12Touch - port RS485, CAN YES

IGS-NT Communication Guide 83

6.1.5 Termination Resistors
Because each differential pair of wires is a transmission line, you must properly terminate the line to prevent
reflections. A common method of terminating a two-wire multidrop RS485 network is to install terminating
resistors at each end of the multidrop network. If you daisy-chained multiple instruments together, you need a
terminating resistor at only the first and last instruments. The terminating resistor should match the
characteristic impedance of the transmission line (typically 100-120 Ω).

6.1.6 Bias Resistors

The transmission line into the RS485 port enters an indeterminate state when it is not being transmitted to.
This indeterminate state can cause the receivers to receive invalid data bits from the noise picked up on the
cable. To prevent these data bits, you should force the transmission line into a known state. By installing two
620 Ω bias resistors at one node on the transmission line, you can create a voltage divider that forces the
voltage between the differential pair to be less than 200 mV, the threshold for the receiver. You should install
these resistors on only one node. The figure below shows a transmission line using bias resistors. Bias
resistors are placed directly on the PCB of controller. Use jumpers PULL UP / PULL DOWN to connect the
bias resistors.

6 back to Connection

IGS-NT Communication Guide 84

7 Communication
7.1 Communication cables 85
7.2 SMS Message command 88
7.3 Modbus Communication 94
7.4 Examples of Modbus Communication 96
7.5 Reserved communication objects 114
7.6 Replacing InternetBridge-NT 116

6 back to Table of contents

7.1 Communication cables

Recommended communication cables for ComAp controllers
Max. Comm.
Interface Cable Connector Max. Length
Rate
Serial cross-wired DB 9 10 m 57.6 kBd
RS232 cable standard Null-
modem cable DB 9 10 m
1
RS485 Shield twisted pair NONE 1000 m 57.6 kBd
Ethernet STP or UTP cable RJ45 100 m 10/100 Mbps
Standard USB A-B
USB USB A-USB B 5m 115200 Bd
cable
2
CAN Shield twisted pair NONE 200/900 m* 250/50 kBd*

*Values 200 m and 250 kBd are for 32 controllers

*Values 900 m and 50 kBd are for 8 controllers

7.1.1 RS485 cable

For longer distances: 3106A Paired - EIA Industrial RS485 PLTC/CM (1x2+1 conductors) Recommended
data cables: BELDEN (www.belden.com)
For shorter distances (up to 50 m): 3105A Paired - EIA Industrial RS485 PLTC/CM (1x2 conductors)

IGS-NT Communication Guide 85

7.1.2 CAN bus cable
Galvanically separated
Maximal CAN bus length 200 m Speed 250 kBd
Nominal impedance 120 Ω
Cable type twisted pair (shielded)
Following dynamic cable parameters are important especially for maximal 200 meters CAN bus length and 32
iS-COM units connected:
Nominal Velocity of Propagation min. 75 % (max. 4.4 ns/m)
Recommended data cables: BELDEN (www.belden.com)
For shorter distances (up to 50 m): 3105A Paired - EIA Industrial RS485 PLTC/CM (1x2 conductors)
For longer distances: 3106A Paired - EIA Industrial RS485 PLTC/CM (1x2+1 conductors)

7.1.3 RS232 cable

It is recommended to use standard Null-modem cable for local connection between controller and PC,
although the three wires (TxD, RxD, GND) RS232 connection is enough for direct controller to PC
communication:

7.1.4 Cables for direct and modem connections

PC to RS232 on controller/I-LB

DB9 Female to DB9 Female

2 3
3 2
5 5

IGS-NT Communication Guide 86

Modem to RS232 on controller/I-LB
Comms settings: MODEM (HW) or I-LB jumper HW control

DB9 Male to DB9 Female

1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9

Comms settings: MODEM (SW) or I-LB jumper SW control

DB9 Male to DB9 Female

2 2
3 3
5 5

7.1.5 USB cable

Use standard USB A-B cable (distance up to 5 meters).

IMPORTANT: Use shielded USB cable only! (ComAp order code: USB-LINK CABLE 1.8 m).

Note: To use USB connection it is necessary to install drivers on your PC.

The drivers can be downloaded from the website www.ftdichip.com/Drivers/VCP.htm.
Download the driver for your operating system and follow the enclosed instructions.
After successful installation of the driver and connection of the controller or I-LB+ to the PC the new Virtual
Communications Port appears in ComAp PC tools and it is possible to open connection via USB.

IGS-NT Communication Guide 87

7.1.6 Ethernet cable
It is recommended to use standard UTP or STP cable with connectors RJ45. Maximal length of cable is
100 m. For direct connection between Controller and PC is necessary to use cross-wired cable (only in case
that your PC does not have automatic recognizing of direct and cross-wired cable).

Image 7.1 Cross-wired UTP 10/100 Mbit cable

7.2 SMS Message command

IMPORTANT: It is not possible to use the SMS commands into the IGS-NT family controllers over
IB-NT connection.
This is available ONLY for 3rd party modems connected over RS232/485 directly to the controller.

7.2.1 Controller address

InteliGen/InteliSys Access code is 15 characters length string. Access code is separated
from controller address by column.

#5:X
Syntax:
X … controller access code up to 15 characters length
#5:accesscode
Example: Message is addressed to controller with address 5 and its access code is set to value
‘accesscode’.

IGS-NT Communication Guide 88

7.2.2 Access code
Controller address is unique controller identification number located in setpoint group Basic setting : Contr
addr [1 to 32].

#XX
Syntax:
XX … controller address [1 to 32]
#5
Example:
Message is addressed to controller with address 5.

7.2.3 Read value or setpoint

Command for reading of selected value or setpoint. Return value is in appropriate numerical or string format.

r XXXX (or rXXXX)

Syntax: r … command
XXXX… value or setpoint code
#5:accesscode r 8252
Example:
Reading of setpoint 8252 (8252 = Gear teeth)

Note: Access code can’t contain space character. Access code can be changed in InteliMonitor only.

7.2.4 Adjust setpoint

Command for adjusting of selected setpoint. Answer message contains only confirmation of successful
adjusting or appropriate error.

w XXXX YYYY (or wXXXX YYYY)

w … command
Syntax:
XXXX… setpoint code
YYYY… value of setpoint in appropriate format
#5:accesscode w 8252 144
Example:
Adjusting of setpoint 8252 to value 144 (8252 = Gear teeth).
ok … adjusting setpoint was correct
w_err … adjusting setpoint was not successful
Return code: er_pass … adjusting setpoint required that valid password was entered
er_old … command for adjusting was read out from SMS during GSM modem
initialization – in this case command will not be served.

IGS-NT Communication Guide 89

7.2.5 Enter password
Password setting command. Password has to be set before adjusting of protected setpoint or calling
protected gen-set control command. Setting password command is not necessary before every adjusting.
Password is a number in range 0 to 65535 and is valid for all rest of SMS.

p PPPP (or pPPPP)

Syntax: p … command
PPPP… password
#5:accesscode p 1234, w 8252 144
Example:
Setting password before adjusting protected setpoint.
ok … setting password was successful
Return code:
er_pass … setting password is not valid

7.2.6 Gen-set control

SMS command for invoking gen-set control command as Start, Stop, Fault reset etc.

c Y (or cY)
c … command
Y … type of operation

Y Type of operation Y Type of operation

1 Start 7 MCB ON
Syntax:
2 Stop 8 MCB OFF
3 Horn Reset 9 GCB ON/OFF
4 Fault Reset 10 MCB ON/OFF
5 GCB ON 11 Next Mode
6 GCB OFF 12 Previous Mode

#5:accesscode p 1234, c1
Example: This SMS command invokes gen-set Start. Password setting is needed in case of
password protection was configured for gen-set commands.
ok … gen-set command was accepted
er_pass … valid password was not set before executing the command
c? … unknown gen-set command
Return code: c_er … gen-set command execution is not allowed in actual state (e.g. attempt to start
the gen-set in OFF mode).
er_old … command was read out from SMS during GSM modem initialization – in this
case command will not be served.

IGS-NT Communication Guide 90

7.2.7 Read Alarm list
Read actual Alarm list.

a
Syntax:
a … command
#5:accesscode a
Example:
Request of actual Alarm list.
AL=(items of alarm list) … comma separated items of Alarm list. Exclamation mark in
Return code:
front of Alarm list item indicates inverse record (still active alarm).

Note:
1. Answer message contains at most eight items of Alarm list.
2. Alarm list is not separated to more messages.

7.2.8 Time delay

Insert time delay before serving next part of SMS command.

dT
Syntax: d … command
T … time delay in sec (in range 1 to 600)
#5:accesscode d 10
Example:
Request 10 sec delay before serving next SMS command.
d_ok … time delay was successful performed
Return code:
d_over … requested time delay is out of range (1 to 600 sec)

Note: Any other SMS messages are not served during time delay!

7.2.9 Remote switches (IG/IS-NT only)

Set or reset RemoteControl1-8 output.

s 1/0
Syntax: s … command
1/0 … set/reset
#5:accesscode p0, s1 1
Example:
Enters password p0 and sets RemoteControl1 output.
Return code: p_OK,s_OK

IGS-NT Communication Guide 91

7.2.10 ExtValues (IG/IS-NT only)
Enters value to ExtValue.

e xxx
Syntax: e … command
xxx … value
#5
Example:
Message is addressed to controller with address 5.
?=(p <user:>passwd,r comm_obj,w com_obj val,c cmd_num,d sec,a,sx y,ex y,?)…...
Return code:
..... list of supported SMS commands

Note: Return code is not separated to more message.

7.2.11 Answer message

Answer message start with # character followed by Gen-set name. Colon separates this header form return
codes of SMS commands. Answer message is generated during serving of received message and is sent in
case that 160 characters or end of received message are achieved. Answer message is sent to the originator
phone number. Tree dots at the end of message indicate separation and next following message.
Example:
#5:accesscode r8252,w8252 100,r8252
answer message
#Gen-setname: 144,ok,100

7.2.12 Examples of SMS commands

Here is following several examples of SMS messages addresses to controller IG/IS-NT with address 5,
named ‘Gen-set name’. Access code in this controller is set to ‘accesscode’ and password is ‘1234’. In
examples are used setpoints and values 8276 – Nomin.power, 10123 – RPM, 8315 – Controller Mode, 8235
– binary inputs, 8296 – Gen > f.

Example 1 – reading value

SMS #5:accesscode r8276 read value 8276
Answer #Gen-set name:100

Example 2 – adjusting setpoint

read value 8276,
#5:accesscode p 1234,
SMS write 110,
r8276,w8276 110,r8276
read value 8276
Password was accepted, read value of 8276 is 100,
#Gen-set name:ok,100,ok,110
writing to 8276 was ok, new value of 8276 is 110
Password was not accepted,
Answer
If wrong password sent: #Gen- read value of 8276 is 100
set name:p_er,100, w_pass, 100 writing to 8276 was not successful
read value of 8276 is still 100

IGS-NT Communication Guide 92

Example 3 – Gen-set control and delay time
read value 8276,
#5:accesscode invoke gen-set command START,
SMS
r8276,c1,d30,r10123 delay 30 sec,
read value 10123
read value of 8276 is 110,
Gen-set command START was accepted,
Answer #Gen-set name:110,ok,d_ok,1499
confirm delay command,
read value of 10123 is 1499

Example 4 – adjusting special setpoint

read value 8315,
SMS #5:accesscode r8315,w8315 0,r8315 write 0 (index of stringlist type),
read value 8315
read value of 8315 as string,
Answer #Gen-set name:MAN,ok,OFF writing was ok,
read new value of 8315 as string

Note: Setpoints Stringlist type (e.g. Controller Mode) is read as string and adjusted as index of string item in
string list. e.g. Controller Mode:

Read value [as string] Write value [as index]

OFF 0
MAN 1
SEM 2
AUT 3
TEST 4

Example 5 – reading and writing other type

read value 8235,
SMS #5:accesscode r8235,w8296 110.2
write 110.2 with decimal point
read value of 8235 (binary value),
Answer #Gen-set name:OIIIOOIIO,ok
writing was ok

Note:
1. Writing of binary setpoint is not supported.
2. Writing of setpoint with decimal point is automatically converted to appropriate number of decimal places.

Example 6 – reading actual Alarm list

SMS #5:accesscode a read actual Alarm list
#Gen-set name:AL=(!Wrn PrimWater temp, !Wrn SecWater Actual Alarm list contains
Answer
temp, Batt volt) three items.

IGS-NT Communication Guide 93

7.3 Modbus Communication
Note: It is possible to define your own Modbus register numbers for any value or setpoint in the BaseBox
controllers with standard FW v3.0 (IG-NT-BB, IS-NT-BB and IM-NT-BB firmware) and higher. For more
information about this function please refer to the chapter User Modbus (page 146).

Note: In the first time, you have to correctly configure the controller connection (see Important setpoints in
the controller on page 131).

7.3.1 Data reading

The function Read Multiple Registers (page 134) has to be used for data reading. The terminal sends a
query and from the controller receives either the normal response containing the requested data or the
exceptional response indicating a read error.
It is possible to use function 3 for reading (see Read Multiple Registers on page 134).
It is not possible to read from the middle. The register number must correspond with the beginning of the
data object. The only exception are the objects of "multi-packet values" (registers 46367 – 46491) and
„data part of the history record“ (registers 46543 – 46667).
All read registers must be implemented. If an unimplemented register appears among the read registers,
the controller returns an error message.
Even unnamed values can be included among read registers. The read value must be treated as
meaningless.
The length of a block is 127 registers.

7.3.2 Data writing

All data can be written by the function Write Multiple Registers (page 140). Data up to 2 bytes can be
written by the function Write Single Registers (page 139), too. The terminal sends a query containing a
written data and the controller either confirms it (normal response) or refuses it (exceptional response).
For writing it is possible to use function 6 (Write Single Registers (page 139)) or function 16 (Write
Multiple Registers (page 140)).
Using function 16 it is possible to write maximum 16 registers at once.
Data cannot be written from the middle. Register number must correspond with the beginning of the data
object. Written data must be complete to perform writing of all requested data objects.
Writing to EEPROM is executed using a queue. The queue is common for writing from all terminals. The
request for next writing is accepted in case that there is empty space in the queue. Otherwise the
controller returns an error message and the terminal must repeat the request.
All written registers must be implemented. If an unimplemented register appears among the read
registers, the controller returns an error message.
It is possible to include also unnamed registers in the written sequence. The controller confirms this
writing but writing of unnamed registers is not performed.

IGS-NT Communication Guide 94

Request
Controller address (1-32), you can set or check your controller’s address in the controller setpoints.
Setpoints -> Comms settings -> Contr.address
Modbus function code, you can use the 3, 6, 16 Modbus function code
Function 3 (Read Multiple Registers)
Function 6 (Write Single Register)
Command 10
Function 16 (Write Multiple Registers)
Register address (40001-47168), it means Modbus address of controller communication object (setpoint,
value, et al.). You can create list of Modbus registers, if you can’t find the register address in this list.
Number of registers (1-127). It means, how many registers you want read.
CRC (no range)
After sent your request, you receive the response. The response has also five parts:
Controller address (1-32), the same as the address in the request
Modbus function code (3, 6, 16, …), mostly the same as in the request
Length of data (1-127), here is specified the length of the received data
Data (0-FF), data are in the HEX form, length is defined above
Check field calculation (page 145) (no range)

Note: The setpoints in IG-NT are placed in EEPROM which has maximum 500 000 of rewrites. Please
consider how fast the setpoints are overwritten. (1 sec writing period, 6 days ~ 500 000 rewrites). IS-NTC-BB
using memory with maximum of 500 000 000 rewrites.

IGS-NT Communication Guide 95

7.4 Examples of Modbus Communication
In this chapter are some examples, how does communicate controller via Modbus.

7.4.1 Battery voltage – reading (read multiple registers) 97

7.4.2 Values (Oil press, Water temp, Fuel level) – reading 99
7.4.3 Binary input – reading 100
7.4.4 Password decode – reading 100
7.4.5 Gen-set name – reading 101
7.4.6 Engine state – reading 102
7.4.7 Gear teeth – writing 103
7.4.8 Nominal Power – writing 103
7.4.9 Mode – writing 104
7.4.10 Reset/Confirm Alarm 105
7.4.11 Remote Switch 1-8 – Set (Remote Control 1-8) 106
7.4.12 External Value1 – writing 107
7.4.13 User & Password – in two steps 108
7.4.14 User & Password – in one step 109
7.4.15 Start the engine – in one step 109
7.4.16 Start the engine – in two steps 110
7.4.17 History – reading 110
7.4.18 AlarmList reading 112
7.4.19 Change the communication language (only String type data) 113

IGS-NT Communication Guide 96

7.4.1 Battery voltage – reading (read multiple registers)
Request: 01 03 00 0C 00 01 44 09
= Controller address
01
See your controller settings
03 = Modbus function code (Read Multiple Registers)
= Register address: Register number (Ubat =>
40013)
00 0C 40013 - 40001 = 12 DEC => 000C HEX
See your Cfg Image or list of Reserved
communication objects (page 114)

= Number of registers
40013, it is one register = 01 DEC => 0001
00 01 HEX
You have to calculate number of register
which you want read
= CRC
CRC has to be written LSB then MSB ! See
09 44
how to calculate Check field calculation
(page 145).
Response: 01 03 02 00 DC B9 DD
= Controller address
01
See your controller settings
= Modbus function code (Read Multiple Registers
03
(page 134))
= Length of read data in Bytes (in HEX)
02 02 HEX => 2 DEC
Define the length of data

IGS-NT Communication Guide 97

= Value of battery voltage
DC HEX => 220 DEC => Batt. voltage is
00 DC represented with 1 decimal => 22.0 VDC
convert the data from hex to dec. Use the
multiplication factor (In this case 0.1)!
= Check field calculation (page 145)
DD B9
Check with your CRC, because of data validity

IGS-NT Communication Guide 98

7.4.2 Values (Oil press, Water temp, Fuel level) – reading
Request: 01 03 00 0F 00 03 35 C8
01 = Controller address
= Modbus function code (Read Multiple Registers
03
(page 134))
= Register address: Register number (40016) –
00 0F
40001 = 15 DEC => 0F HEX
= Number of registers (40016 – Oil press, 40017 –
00 03 Water temp, 40018 – Fuel level)
= 3 DEC = > 03 HEX
C8 35 = CRC (write LSB MSB !)

Response: 01 03 06 00 27 00 2E 00 2B 35 64
01 = Controller address
= Modbus function code (Read Multiple Registers
03
(page 134))
06 = Length of read data in Bytes (in HEX)
= 27 HEX => 39 DEC => 3.9 Bar (Oil pressure is
00 27
represented with 1 decimal in Bars)
= 2E HEX => 46 DEC => 46 °C (Water temperature is
00 2E
represented with 0 decimals in °C)
= 2B HEX => 43 DEC => 43 % (Fuel level is
00 2B
represented with 0 decimals in %)
64 35 = Check field calculation (page 145)

IGS-NT Communication Guide 99

7.4.3 Binary input – reading
Request: 01 03 00 02 00 01 25 CA
01 = Controller address
= Modbus function code (Read Multiple Registers
03
(page 134))
= Register address: Register number (40003) –
00 02
40001 = 02 DEC => 02 HEX
00 01 = Number of registers (40003) = 01 DEC => 01 HEX
= Check field calculation (page 145) (write LSB
CA 25
MSB !)
Response: 01 03 02 00 0A 38 43
01 = Controller address
= Modbus function code (Read Multiple Registers
03
(page 134))
02 = Length of read data in Bytes (in HEX)
= Object data value (Binary input =
00 0A
00000000000001010 i.e. BI2 and BI4 are set)*
43 38 = Check field calculation (page 145)

7.4.4 Password decode – reading

Request: 01 03 00 A0 00 02 C4 29
01 = Controller address
03 = Modbus function code (Read Multiple Registers (page 134))
00 A0 = Register address: Register number (40161) – 40001 = 160 DEC => A0 HEX
00 02 = Number of registers (40161 and 40162) = 02 DEC => 02 HEX
29 C4 = Check field calculation (page 145) (write LSB MSB !)
Response: 01 03 04 68 73 90 00 7B 88
01 = Controller address
03 = Modbus function code (Read Multiple Registers (page 134))
04 = Length of read data in Bytes (in HEX)
68 73 90 00 = 68739000 HEX => 1752403968 DEC = > password decode is 1752403968
88 7B = Check field calculation (page 145)

IGS-NT Communication Guide 100

7.4.5 Gen-set name – reading
Request: 01 03 0B B8 00 08 C6 0D
01 = Controller address
03 = Modbus function code (Read Multiple Registers (page 134))
= Register address: Register number (43001) – 40001 = 3000 DEC =>
0B B8
BB8 HEX
00 08 = Number of registers (43001 - 43008) = 08 DEC => 08 HEX
0D C6 = Check field calculation (page 145) (write LSB MSB !)
Response: 01 03 10 49 47 53 2D 4E 54 00 00 00 00 00 00 00 00 00 00 D7 6A
01 = Controller address
03 = Modbus function code (Read Multiple Registers (page 134))
10 = Length of read data in Bytes (in HEX)
49 47 = Object data value (IG)
53 2D = Object data value (S-)
4E 54 = Object data value (NT)
00 00 = Object data value (_ _)
00 00 = Object data value (_ _)
00 00 = Object data value (_ _)
00 00 = Object data value (_ _)
00 00 = Object data value (_ _) =.> Gen-set name is IGS -NT
6A D7 = Check field calculation (page 145)

IGS-NT Communication Guide 101

7.4.6 Engine state – reading
Request: 01 03 00 A2 00 01 25 E8
01 = Controller address
= Modbus function code (Read Multiple Registers
03
(page 134))
= Register address: Register number (40163) –
00 A2
40001 = 162 DEC => A2 HEX
00 01 = Number of registers (40163)
= Check field calculation (page 145) (write LSB
E8 25
MSB !)
Response: 01 03 02 00 02 39 85
01 = Controller address
= Modbus function code (Read Multiple Registers
03
(page 134))
02 = Length of read data in Bytes (in HEX)
= Object data value – see the List#1 in the Cfg Image
00 02
=> (NotReady)
85 39 = Check field calculation (page 145)

IGS-NT Communication Guide 102

7.4.7 Gear teeth – writing
Request: 01 06 0B D0 00 7D 4A 36
01 = Controller address
06 = Modbus function code (Write Single Registers (page 139))
0B D0 = Register address: Register number (43025) – 40001 = 3024 DEC => BD0 HEX
00 7D = Gear teeth > 125 DEC => 7D HEX
36 4A = Check field calculation (page 145) (write LSB MSB !)
Response: 01 06 0B D0 00 7D 4A 36
01 = Controller address
06 = Modbus function code (Write Single Registers (page 139))
0B D0 = Register address
00 7D = Set the setpoint gear teeth to > 7D HEC => 125 DEC = 125
36 A4 = Check field calculation (page 145)

7.4.8 Nominal Power – writing

Request: 01 06 0B C0 01 F4 8B C5
01 = Controller address
06 = Modbus function code (Write Single Registers (page 139))
0B C0 = Register address: Register number (43009) – 40001 = 3008 DEC => BC0 HEX
01 F4 = Nominal power > 500 DEC => 1F4 HEC
C5 8B = Check field calculation (page 145) (write LSB MSB !)
Response: 01 06 0B C0 01 F4 8B C5
01 = Controller address
06 = Modbus function code (Write Single Registers (page 139))
0B C0 = Register address
01 F4 = Set the setpoint nominal power to > 1F4 HEC => 500 DEC = 500
C5 8B = Check field calculation (page 145)

IGS-NT Communication Guide 103

7.4.9 Mode – writing
Request: 01 06 0B D2 00 03 6B D6
01 = Controller address
06 = Modbus function code (Write Single Registers (page 139))
0B D2 = Register address: Register number (43027) – 40001 = 3026 DEC => BD2 HEX
00 03 = Set the controller mode to > TEST => 03 – see the List#3 in the Cfg Image
D6 6B = Check field calculation (page 145) (write LSB MSB !)

Response: 01 06 0B D2 00 03 6B D6
01 = Controller address
06 = Modbus function code (Write Single Registers (page 139))
0B D2 = Register address
00 03 = Object data value > TEST
D6 6B = Check field calculation (page 145)

IGS-NT Communication Guide 104

7.4.10 Reset/Confirm Alarm
Request: 01 10 18 D6 00 03 06 08 F7 00 00 00 01 49 CB
01 = controller address
10 = Modbus command
= Register address: Object for engine commands
18D6
(46359) – 40001 = 6358 DEC => 18D6 HEX
00 03 = number of Modbus registers
06 = data length in bytes (08F70000+0001)
= argument for Fault reset (Commands for IGS-NT
08F70000
and InteliSys Gas (page 71))
= command number (Commands for IGS-NT and
0001
InteliSys Gas (page 71))
= Check field calculation (page 145) (write LSB
CB 49
MSB !)

Response: 01,10,18,D6,00,03,67,50
01 = Controller address
10 = Modbus command
18 D6 = Register address
00 03 = Release value, number of written Modbus registers
50 67 = Check field calculation (page 145)

IGS-NT Communication Guide 105

7.4.11 Remote Switch 1-8 – Set (Remote Control 1-8)
Request: 01 10 18 D6 00 03 06 00 20 00 00 00 1A 7C 9A
01 = controller address
10 = Modbus command
= Register address: Object for engine commands
18 D6
(46359) – 40001 = 6358 DEC => 18D6 HEX
00 03 = number of Modbus registers
06 = data length in bytes (08F70000+001A)
= argument for Y = (RemoteSwitchX) - 1
0020000Y (Commands for IGS-NT and InteliSys Gas (page
71))
= command number (Commands for IGS-NT and
001A InteliSys Gas (page 71)), command = 26 DEC =
001A HEX
9A 7C = CRC (write LSB MSB !)
Response: 01 10 18 D6 00 03 67 50
01 = Controller address
10 = Modbus command
18 D6 = Register address
00 03 = Release value, number of written Modbus registers
50 67 = Check field calculation (page 145)

IGS-NT Communication Guide 106

7.4.12 External Value1 – writing
Request: 01 10 18 D6 00 03 06 00 00 00 24 00 23 7D 44
01 = controller address
10 = Modbus command
= Register address: Object for engine commands (46359) – 40001 = 6358 DEC =>
18 D6
18D6 HEX
00 03 = number of Modbus registers
06 = data length in bytes (00000024+0023)
= argument for Set ExtValue 1-4 (Commands for IGS-NT and InteliSys Gas
00000024
(page 71)) (value 36DEC = 0024HEX)
= command number (Commands for IGS-NT and InteliSys Gas (page 71)),
0023
command = 35 DEC = 0023 HEX
7D 44 = Check field calculation (page 145) (write LSB MSB !)
Response: 01 10 18 D6 00 03 67 50
01 = Controller address
10 = Modbus command
18 D6 = Register address
00 03 = Release value, number of written Modbusregisters
50 67 = Check field calculation (page 145)

Note: Writing External Value in one step is possible only with direct connection to controller. If
communication bridge (IB-NT or I-LB+) is used, it is necessary to write the command and argument in two
steps.

IGS-NT Communication Guide 107

7.4.13 User & Password – in two steps
Request: 01 06 18 DA 00 00 AE 91
01 = controller address
= Modbus function code (Write Single Registers
06
(page 139))
= Register address: Object for user identification
18 DA
(46363) – 40001 = 6362 DEC => 18DA HEX
00 00 = ID of user; Administrator = 00 => 0000
= Check field calculation (page 145) (write LSB
91 AE
MSB !)

Response: 01 06 18 DA 00 00 AE 91
01 = Controller address
06 = Modbus command
18 DA = Register address
00 00 = Release value
91 AE = CRC
Request: 01 06 18 DB 00 00 FF 51
01 = controller address
= Modbus function code (Write Single Registers
06
(page 139))
= Register address: Object for entering password
18 DB
(46364) – 40001 = 6363 DEC => 18DB HEX
00 00 = Password = 00 => 0000
= Check field calculation (page 145) (write LSB
51 FF
MSB !)
Response: 01 06 18 DB 00 00 FF 51
01 = Controller address
06 = Modbus command
18 DB = Register address
00 00 = Release value
51 FF = Check field calculation (page 145)

IGS-NT Communication Guide 108

Note: Before entering the password for writing it is necessary to define user identification number. It is
recommended to enter user identification number and password simultaneously. Entered password stays
valid 5 minutes after the last successful writing.

7.4.14 User & Password – in one step

Request: 01 10 18 DA 00 02 04 00 00 00 00 D4 8C
01 = controller address
= Modbus command (Write Multiple Registers
10
(page 140))
= Register address: Object (46363) – 40001 = 6362
18 DA
DEC => 18DA HEX
00 02 = number of Modbus registers (user & password)
04 = data length in bytes (00 00 00 00)
00 00 00 00 = User identification "00 00" & password "00 00"
= Check field calculation (page 145) (write LSB
8C D4
MSB !)

Response: 01,10,18,DA,00,02,66,93
01 = Controller address
10 = Modbus command
18 DA = Register address
00 02 = number of written Modbus registers
93 66 = Check field calculation (page 145)

7.4.15 Start the engine – in one step

To start the engine it is necessary to enter an appropriate user and his password first to enable commands, if
these are protected by level 1-7.

Request: 01 10 18 D6 00 03 06 01 FE 00 00 00 01 95 53
01 = controller address
10 = Modbus command (Write Multiple Registers (page 140))
= 6358 object for engine commands (46359) – 40001 = 6358 DEC => 18D6
18 D6
HEX
0003 = number of Modbus registers
06 = data length in bytes (01FE0000+0001)

IGS-NT Communication Guide 109

= argument for Engine start (Commands for IGS-NT and InteliSys Gas
01FE0000
(page 71))
0001 = command number (Commands for IGS-NT and InteliSys Gas (page 71))
53 95 = Check field calculation (page 145) (write LSB MSB !)
Response: 01 10 18 D6 00 03 67 50
01 = Controller address
10 = Modbus function code (Read Multiple Registers (page 134))
18 D6 = Register address
00 03 = Release value, number of written Modbus registers
50 67 = Check field calculation (page 145)

Note: Starting the engine in one step is possible only with direct connection to controller. If communication
bridge (IB-NT or I-LB+) is used, it is necessary to write the command and argument in two steps, please see
"Start the engine – in two steps".

7.4.16 Start the engine – in two steps

Request 1: 01 10 18 D6 00 02 04 01 FE 00 00 B4 D5
01 = Controller address
10 = Modbus function code (Write Multiple Registers (page 140))
= Register address for command argument (46359) – 40001 = 6358 DEC =>
18 D6
18D6 HEX
00 02 = Number of registers
04 = Number of bytes that will be written (01FE0000)
01 FE 00 00 = command number (Commands for IGS-NT and InteliSys Gas (page 71))
D5 B4 = Check field calculation (page 145) (write LSB MSB !)
Request 2: 01 06 18 D8 00 01 CE 91
01 = Controller address
06 = Modbus function code (Write Single Registers (page 139))
18 D8 = Register address for command (46361) – 40001 = 6360 DEC => 18D8 HEX
00 01 = command number (Commands for IGS-NT and InteliSys Gas (page 71))
91 CE = Check field calculation (page 145)

7.4.17 History – reading

For more information see History reading on page 145.
Note: If you use the ModScan32 PC tool, use the script for this issue.

1 of 3 - first the index of history record must be entered:

Request: 01 06 18 D4 00 00 CF 52
01 = Controller address

IGS-NT Communication Guide 110

06 = Modbus function code (Write Single Register)
= Register address of the history index (46357) –
18 D4
40001 = 6356 DEC => 18D4 HEX
00 00 = First history record (index = 0)
52 CF = CRC (write LSB MSB !)
Response: 01 06 18 D4 00 00 CF 52

2 of 3 - reading of history record header:

Request: 01 03 19 5C 00 32 03 51
01 = Controller address
= Modbus function code (Read Multiple Registers
03
(page 134))
= Register address of history record header (46493)
19 5C
*2 – 40001 = 6492 DEC => 195C HEX
= Number of registers > 46493 – 46541 => 50 DEC
00 32
=> 32 HEX
= Check field calculation (page 145) (write LSB
51 03
MSB !)
Response: 01 03 64 4D 43 42 20 63 6C 6F 73 65 64 20 20 20 20 20 20 20 20 20 20 30 33 2F 30 39 2F
32 30 30 38 20 20 31 35 3A 34 34 3A 35 37 2E 39 00 … 00 00 0E E0
01 = Controller address
= Modbus function code (Read Multiple Registers
03
(page 134))
64 = Length of read data in Bytes (in HEX)
st
= Object data value > 1 record in alarmlist is MCB
4D .. 39 ...
closed
E0 0E = Check field calculation (page 145)
3 of 3 - reading of the data part of history record:
Request: 01 03 19 8E 00 7D E2 9C
01 = Controller address
= Modbus function code (Read Multiple Registers
03
(page 134))
= Register address of history record header (46543)
19 8E
– 40001 = 6542 DEC => 198E HEX

IGS-NT Communication Guide 111

= Number of registers > 46542 – 46667 => 125 DEC
00 7D
=> 7D HEX
= Check field calculation (page 145) (write LSB
9C E2
MSB !)
Response: 01 03 FA 00 00 00 00 00 00 00 20 00 … 00 00 F4 01 FD 00 FD 00 FD 00 00 00 00 00 00 00
00 64 20 00 00 00 00 64 00 D8 00 55 01 00 00 A1 00 7A 00 64 00 0A 00 18 00 00 00 00 … 00 00 20
3B
01 = Controller address
= Modbus function code (Read Multiple Registers
03
(page 134))
FA = Length of read data in Bytes (in HEX)
= Object data value > for reading this data see table 7
History Record in Communication object
00 .. 00
description (in PC tool -> File –> Generate Cfg
Image –> Generate Cfg Image (Comm. Objects …))
3B 20 = Check field calculation (page 145)

7.4.18 AlarmList reading

For more information see Alarm list reading on page 141.

Request: 01 03 1A 0C 00 19 43 B1
01 = Controller address
= Modbus function code (Read Multiple Registers
03
(page 134))
= Register address: Register number (46669) –
1A 0C
40001 = 6668 DEC => 1A0C HEX
= Number of registers > 46669 – 46693 => 25 DEC
00 19
=> 19 HEX
= Check field calculation (page 145) (write LSB
B1 43
MSB !)

Response: 01 03 32 2A 53 64 20 53 44 20 31 32 … 00 00 18 F5
01 = Controller address
= Modbus function code (Read Multiple Registers
03
(page 134))

IGS-NT Communication Guide 112

32 = Length of read data in Bytes (in HEX)
2A 53 = Object data value (* S)
64 20 = Object data value (d _)
53 44 = Object data value (S D)
20 31 = Object data value (_ 1)
st
= Object data value (2) = > 1 record in alarmlist is
32 00 ...
*Sd SD 12 (inactive, not accepted)
F5 18 = Check field calculation (page 145)
Response: 01 03 32 21 2A 53 64 20 53 44 20 31 32 00 00 … 00 00 89 38
01 = Controller address
= Modbus function code (Read Multiple Registers
03
(page 134))
32 = Length of read data in Bytes (in HEX)
21 2A = Object data value (! *)
53 64 = Object data value (S d)
20 53 = Object data value (_ S)
44 20 = Object data value (D _)
st
= Object data value (1 2) = > 1 record in alarmlist is
31 32 ...
!*Sd SD 12 (active, not accepted)
38 89 = Check field calculation (page 145)

7.4.19 Change the communication language (only String type

data)
Write to the communication object 6350 the index of language to be used.

Request: 01 06 18 CE 00 01 2F 55
01 = Controller address
06 = Modbus function code (Write Single Registers (page 139))
18 CE = Register address: Register number (46351) – 40001 = 6350 DEC => 18CE HEX
00 01 = Set the language index to > 1
55 2F = Check field calculation (page 145) (write LSB MSB !)
Response: 01 06 18 CE 00 00 EE 95

IGS-NT Communication Guide 113

01 = Controller address
06 = Modbus function code (Read Multiple Registers (page 134))
18 VR = Register address
00 01 = Language index set to > 1
55 2F = Check field calculation (page 145)

7.5 Reserved communication objects

These objects are always available regardless of the controller software modification:

Register Number of
Registers (*) Access Data type Meaning
addresses (*) registers
46347-46348 6346 – 6347 2 read/write Time Actual time
46349-46350 6348 – 6349 2 read/write Date Actual date
Language index selected for
46351 6350 1 read/write Unsigned8 displaying of texts specified by
data type String (# 7)
Code of the last
46352-4653 6351-6352 2 read Domain communication fault (see
Error list on page 152)
Number of records in the alarm
46354 6353 1 read Unsigned8
list
Number of records in history
46355 6354 1 read Unsigned16
(# 6)
Reserved (register not
46356 6355 1
implemented)
Index of requested history
46357 6356 1 read/write Integer16
record (# 5)
46358 6357 1 write Unsigned16 Remote key
For writing:command argument
46359-46360 6358-6359 2 read/write Unsigned32 For reading: command release
value (# 3)
46361 6360 1 write Unsigned16 Command (# 3)
Reserved (register not
46362 6361 1
implemented)
User identification number (
46363 6362 1 read/write Unsigned8
# 4)
Entering of password for
46364 6363 1 write Unsigned16
writing ( # 4)
Reserved (register not
46365 6364 1
implemented)
46366-46490 6365-6489 125 read Domain Values multipacket (#8)
Reserved (register not
46491 6490 1
implemented)
Header of the particular history
46493-46541 6492-6540 50 read String
record (# 1)
46542 6541 1 Reserved (register not

IGS-NT Communication Guide 114

Register Number of
Registers (*) Access Data type Meaning
addresses (*) registers
implemented)
Data part of the particular
46543-46667 6542-6666 125 read Domain
history record (# 2)
Reserved (register not
46668 6667 1
implemented)
46669-46693 6668-6692 25 read String 1. record in alarm list (# 1)
46694-46718 6693-6717 25 read String 2. record in alarm list (# 1)
46719-46743 6718-6742 25 read String 3. record in alarm list (# 1)
46744-46768 6743-6767 25 read String 4. record in alarm list (# 1)
46769-46793 6768-6792 25 read String 5. record in alarm list (# 1)
46794-46818 6793-6817 25 read String 6. record in alarm list (# 1)
46819-46843 6818-6842 25 read String 7. record in alarm list (# 1)
46844-46868 6843-6867 25 read String 8. record in alarm list (# 1)
46869-46893 6868-6892 25 read String 9. record in alarm list (# 1)
46894-46918 6893-6917 25 read String 10. record in alarm list (# 1)
46919-46943 6918-6942 25 read String 11. record in alarm list (# 1)
46944-46968 6943-6967 25 read String 12. record in alarm list (# 1)
46969-46993 6968-6992 25 read String 13. record in alarm list (# 1)
46994-47018 6993-7017 25 read String 14. record in alarm list (# 1)
47019-47043 7018-7042 25 read String 15. record in alarm list (# 1)
47044-47068 7043-7067 25 read String 16. record in alarm list (# 1)
Reserved (registers not
47069-47168 7068-7167 100
implemented)

Note:
(*) in DEC

#1
The result of reading of an unused record is an empty string.
#2
The result of reading of an unused record is a domain with zero value.
#3
The appropriate argument must be written before writing of the command code, because immediately after
the command code has been written the command is executed. For Modbus-RTU the argument and
command code can be written at once, in a multiple registers write using Modbus function 16 (3 registers). As
the argument has lower register address than command, the required sequence is maintained. However, for
Modbus/TCP the argument and function code must be written separately, the argument first, then the function
code. The argument must be written using Modbus function 16 (2 registers) and then the command code
using Modbus function 6 or 16 (1 register). In Modbus/TCP It is not allowed to write both argument and
command code as one block using function 16. See List of commands and modbus communication
examples.

IGS-NT Communication Guide 115

#4
Before entering the password for writing it is necessary to define user identification number. It is
recommended to enter user identification number and password simultaneously. Entered password stays
valid 5 minutes after the last successful writing.
#5
The latest record has index 0, older record has index -1, next record has index -2, …
#6
It is possible to read and write only in case that history reading is not locked by another terminal. Second
necessary condition is to previously write the index.
#7
Implicitly = 0.
#8
„Values multipacket“ contains values that are currently configured in the history record.
6 back to Communication

7.6 Replacing InternetBridge-NT

7.6.1 Sites with "NT" family controllers
The CAN module InteliBridge-NT was designed to provide ethernet or cellular connectivity for InteliGen NT,
InteliSys NT, InteliSys Gas controllers and it’s derivatives. The typical topology of InteliBridge-NT connection
was as follows:

Image 7.2 InteliBridge-NT, wired internet connection

IGS-NT Communication Guide 116

Image 7.3 InteliBridge-NT, cellular internet connection

7.6.2 Sites with new controller families

In the new controller product families the connectivity is based primarily on ethernet - a modern, fast and
reliable communication technology. The communication interface has been moved inside the controllers,
either as built-in or as plug-in modules. Thus, there is no need of external CAN module to provide the
connectivity. The topology has changed as described at following pictures.

IGS-NT Communication Guide 117

Image 7.4 InteliGen 200, wired internet connection

Image 7.5 InteliGen 200, cellular internet connection via cellular router

Image 7.6 InteliGen 200, wired internet connection with cellular fallback

IGS-NT Communication Guide 118

Image 7.7 InteliGen 200, cellular internet connection via separate cellular modules

7.6.3 Combined sites

There might be also sites where the "NT" controllers are used together with newly installed controllers from
the new product families. In such a case the topology respects the different connectivity:

IGS-NT Communication Guide 119

Image 7.8 Combined site, wired internet connection

Note: The controllers from new product lines are not supported in InteliBridge-NT and thus not accessible via
it.

IGS-NT Communication Guide 120

8 Converters
8.1 Converter RS232 ↔ RS485 121
8.1.1 General properties of RS232 to RS485 converters: 121
8.1.2 Recommended converters 122
8.2 RS232 Bluetooth adapter 122
8.2.1 Recommended adapter 122
8.3 Converter USB ↔ RS232 122
8.3.1 Recommended converters 123
8.4 Converter USB ↔ RS485 123
8.4.1 Recommended converter 123
8.5 Converter CAN ↔ CAN 124
8.5.1 Recommended converter 124
8.6 Recommended optical USB extension cables 124
8.6.1 Radio Link 124
8.6.2 Recommended equipment 125
8.7 Converter Modbus RTU ↔ Profibus 125
8.7.1 GE Digital Energy – P485 Modbus to Profibus Converter 125
8.7.2 Converter settings 125
8.7.3 Setup example (using wizard) 126
8.7.4 Controller settings 129
8.8 Anybus Comunicator – Modbus RTU to Profibus and other communication standards 129
8.8.1 Ethernet converter from twisted pair(UTP/STP) to optic 130
8.8.2 Recommended equipment 130

8.1 Converter RS232 ↔ RS485

8.1.1 General properties of RS232 to RS485 converters:

Has to be set to passive DSR signal (when DSR connected) after switch on.
No external data flow control signals are allowed – automatic data flow control required.

IGS-NT Communication Guide 121

8.1.2 Recommended converters
External:
ADAM 4520
ADVANTECH, (www.advantech.com/)
DIN rail, automatic RS485 bus supervision, no external data flow control signals, galvanic isolated,
baud rate 19200 bps
When communication is working the LED on ADAM 4520 is going from full illumination to short
darkness then again full illuminated
When communication of I-LB is working, PWR and RUN LEDs full red illuminated; TxD and RxD
flashing when transmitting
Note: In the case of surge hazard (connection out of building in case of storm etc.) see the "Recommended
CAN/RS485 connection" chapter of the IGS-NT Installation guide.

8.2 RS232 Bluetooth adapter

8.2.1 Recommended adapter

BL-830 (www.brainboxes.com/category/bluetooth.aspx) – doesn’t work with Windows Vista

8.3 Converter USB ↔ RS232

Useful for PC/laptops without serial port

IGS-NT Communication Guide 122

8.3.1 Recommended converters
UCAB232 Full,
ASIX (www.asix.cz/)
UCAB232 is designated for all standard RS232 devices (mouses, modems, data terminals, barcode
readers, serial printers) and industrial applications. UCAB232 supports Baud rates from 300 Bd to
250 kBaud (guaranteed) / 500 kBaud (typ.).
VPI - USS-101/111,
VPI (www.vpi.us/usb-serial.html)
Supports serial devices with speeds up to 230 kb/sec (e.g. PDAs, modems, scanners, etc.).
C-232-MM,
(www.usbgear.com/item_288.html)
The USB Serial Adapter provides instant connectivity with modems, ISDN TAs, PDS, handheld &
pocket PCs, digital cameras, POS, serial printers, etc. It supports data rates up to 230 Kbps.

8.4 Converter USB ↔ RS485

Extends distance between PC and controller up to 1200 meters

8.4.1 Recommended converter

SB485S, SB485C, SB585L
PaPouch elektronika (www.papouch.com/)

IGS-NT Communication Guide 123

8.5 Converter CAN ↔ CAN
Allows to change the baudrate. Can be useful to connect specific types of ECU.
Allows to map CAN identifier to another. Useful in case of collision at the CAN bus.
Allows to filter range of CAN identifiers. May be appropriate at sites with heavy traffic on the CAN bus.

8.5.1 Recommended converter

I-7532:
www.icpdas.com
From FW 1.4 and higher allows to map short CAN identifiers to long and vice versa.

8.6 Recommended optical USB extension cables

Opticis M2-100-xx opticis.com
USB Rover 200 www.icron.com

8.6.1 Radio Link

Useful when the control room is distant from the site

Can be more economical than to hard wire it

IGS-NT Communication Guide 124

8.6.2 Recommended equipment
RadioLinx RL-2400E wireless Ethernet switch, ProSoft Technology Inc. (www.prosoft-technology.com)
ADAM-4571, ADVANTECH (www.advantech.com)
MOXA DE311, MOXA (www.moxa.com)
MOXA Nport 5230, MOXA

8.7 Converter Modbus RTU ↔ Profibus

8.7.1 GE Digital Energy – P485 Modbus to Profibus Converter

For connection of 1-32 NT line controllers to a Profibus network
RS485 or RS232 physical layer for connection to the controller(s)
Full Profibus-DP slave functionality according IEC61158
244 bytes input data size (122 Modbus registers)
244 bytes output data size (122 Modbus registers)
416 bytes total
See details on the web page of the manufacturer:
gedigitalenergy.com/multilin/catalog/p485.htm

8.7.2 Converter settings

Use EnerVista software to setup the converter. It can be downloaded from the web page
pm.geindustrial.com.

IGS-NT Communication Guide 125

To configure the converter in the Profibus network, download the description file
www.geindustrial.com/products/software/d485/P48509E5.zip and import it to the Profibus configuration
tool.
Follow instructions in the P485 manual while configuring the converter. The setup wizard incorporated in the
Enervista software will make the setup process much easier, but finally some manual corrections are needed.
Below are some notes specific to the connection with ComAp controllers.
The physical layer for Modbus communication is select table. The selected type (RS232/RS485) and
speed must be same in the P485 and controller, see Peripheral modules on page 60.
Use RS485 in case more controllers are connected to the P485.
A Device mentioned in the wizard represents a controller type (IG-NT, IM-NT, IS-NT). Once a device is
defined, more nodes of the same type (device) can be created easily.
A Modbus network node represents a controller. The slave address must correspond to the Controller
address setpoint of the related controller.
See Modbus Connection (page 131) for details about Modbus, register numbers, sizes etc.
Use triggered update mode for writing objects (registers) to the controller. Never use cyclic
update mode!

8.7.3 Setup example (using wizard)

1. Select wizard

2. Select fieldbus type.

IGS-NT Communication Guide 126

3. Select physical layer and communication parameters for Modbus.

4. Define IGS-NT Device, it’s Parameters and related Modbus registers.

5. Define nodes connected to the Modbus network.

IGS-NT Communication Guide 127

6. For each node select parameters that have to be mapped to the Profibus network.

7. Save the configuration overview (the picture below is only a general example, not a real one).

8. The configuration using wizard is finished.

9. Save the configuration to a file.

IGS-NT Communication Guide 128

10. Navigation window will appear:

11. For each write-type parameter modify the property Update mode to triggered mode and define trigger byte
address. The Profibus master must update the parameter data field first and then increase the trigger byte
value to write the parameter (register) to the controller.

12. Write the configuration to the P485 and save it also to disk as backup.

8.7.4 Controller settings

IG/IS-NT
Comms settings: RS232(1) mode / RS232(2) mode* MODBUS-DIRECT
Comms settings: RS232(1)MBCSpd / RS232(2) MBCSpd* according to converter setting
Comms settings: RS485(1)conv. / RS485(2) conv.* according the converter setting

Note:
* Second RS232/485 port available only in IG-NTC/EEC and IS-NT.

8.8 Anybus Comunicator – Modbus RTU to

Profibus and other communication standards
Anybus communicator is converter from Modbus RTU (RS232, RS422, RS485) to Profibus and other
communication standards. See more information on manufacturer web page.
See details on the web page of the manufacturer: www.hms.se/
Download user manual and configuration manual www.hms.se/upload/104-0855-ABC-PDP_2_53.pdf

IGS-NT Communication Guide 129

8.8.1 Ethernet converter from twisted pair
(UTP/STP) to optic
For galvanic separation
For cable length extension

8.8.2 Recommended equipment

Ethernet Media converters
MOXA IMC-21A (www.moxa.com/product/IMC-21A.htm) Multimode / single mode versions. One
Ethernet port. Up to 40 km (single mode). SC/ST connectors.

Ethernet Switches
MOXA EDS-305/308 series (www.moxa.com/product/eds-308305.htm) Unmanaged switches.
Multimode / single mode versions. 4/6 Ethernet RJ45 ports, 1/2 optical ports. Up to 40 km (single
mode). Alarm contact. SC/ST connectors.
MOXA EDS-405A/408A series (www.moxa.com/product/eds-408405a.htm) Managed switches.
Multimode / single mode versions. 4/6 Ethernet RJ45 ports, 1/2/3 optical ports. Up to 40 km (single
mode). Redundant power supply. Alarm contact. SC/ST connectors.

IGS-NT Communication Guide 130

9 Modbus Connection
Modbus protocol was implemented into the controllers to enable the customer to design its own supervision
software.

9.1 Modbus Step by Step 131

9.2 Important setpoints in the controller 131
9.2.1 Modbus communication via RS232 – single controller 132
9.2.2 Modbus communication via RS485 132
9.2.3 Modbus communication via RS485 – multiple controllers 132
9.2.4 Modbus communication via I-LB+ 133
9.2.5 Modbus communication via IB-NT 133
9.3 Modbus Protocol Description 134
9.3.1 Modbus TCP 134
9.3.2 Modbus RTU 136
9.3.3 Alarm list reading 141
9.3.4 History reading 145
9.4 Check field calculation 145
9.5 How get numbers of Modbus communication objects 145
9.6 User Modbus 146

9.1 Modbus Step by Step

9.2 Important setpoints in the controller

There are three possibilities of Modbus connection to single or multiple controllers: Via RS232 or RS485,
IG/IS-NT-BB controllers is possible connect via Ethernet port (TCP/IP Modbus).
Controller’s configuration:
Comms settings:RS232(1) mode = [MODBUS-DIRECT ]
Selection of Modbus communication speed:
Comms settings:RS232(1)MBCSpd = [ 9600 , 19200 , 38400 , 57600 ] bps
Selection of RS232/RS485 Converter:
Comms settings:RS485(1)Conv. = [ DISABLED, ENABLED]
Ethernet connection settings are described in chapter Monitoring Local on site – MODBUS (page 34).

IGS-NT Communication Guide 131

9.2.1 Modbus communication via RS232 – single controller
Controller’s configuration
Comms settings:RS232(1) mode = MODBUS-DIRECT
Comms settings:RS232(1)MBCSpd = Select of Modbus communication speed
Comms settings:RS485(1)Conv. = DISABLED

9.2.2 Modbus communication via RS485

Controller’s configuration
Comms settings:RS232(1) mode = MODBUS-DIRECT
Comms settings:RS232(1) MBCSpd = Select of Modbuscommunication speed
Comms settings:RS485(1) Conv. = ENABLED

Note: The RS232/RS485 converter is included in the IG-NTC, IG-EEC and IS-NT controllers (no external
RS232/RS485 converter is needed).

Note: RS485 communication line has to be terminated by 120 Ω resistors at both ends – follow converter
user manual. RS485 communication can be used for monitoring and controlling of many controllers via
InteliMonitor.

9.2.3 Modbus communication via RS485 – multiple controllers

Controller’s configuration
Comms settings:RS232(1) mode = MODBUS-DIRECT
Comms settings:RS232(1) MBCSpd = Select of Modbus communication speed
Comms settings:RS485(1) Conv. = ENABLED

IGS-NT Communication Guide 132

9.2.4 Modbus communication via I-LB+
I-LB+ configuration
Jumpers P13, P14 = select of Modbus communication speed
Jumper P16 = Modbus
Jumper P17 = Address 1 or Address 2
Jumper P18 = Direct

Note: To use I-LB Modbus communication connect Modbus jumper in I-LB unit (P16). Additionally, you can
choose the communication speed using the speed selection jumpers (P13, P14). Their combination allows
the speed selection of 9600/19200/38400/57600 bps.

9.2.5 Modbus communication via IB-NT

Modbus communication needs to be enabled in settings via IB-NT config.
Modbus is available only as Modbus TCP over Ethernet port. Modbus RTU over RS485 is not supported as
the RS485 and RS232 ports are used only for inter(controller) connection.
NT
Note: For more information regarding IB-NT please see documentation InteliBridge Global Guide.

IGS-NT Communication Guide 133

9.3 Modbus Protocol Description
9.3.1 Modbus TCP
Direct connection:
ETH
Port 502
Bridge connection:
IB-NT
Transfer mode TCP/IP
Function codes
3 (Read Multiple Registers)
6 (Write Single Register)
10 (Command)
16 (Write Multiple Registers)
The response to an incoming message depends on the network performance and on the controller
configuration. Typical response time is 25 ms.
Connection timeout is set to 15 seconds. If no message comes within the timeout then controller close the
connection.
Note: Data structure is the same as Modbus RTU. Modbus TCP adds 6 bytes header before data. CRC
calculation is not used in Modbus TCP.

Read Multiple Registers

Query
Byte Meaning Note
Value will be copied into
0-1 Transaction Identifier
response.
2-3 Protocol Identifier 0 = Modbus protocol
4 + 2 * Number of
4-5 Number of following bytes
registers.
6 Controller address 1 to 32
7 3 Modbus function code
Controller address
8 upper byte (MSB)
9 lower byte (LSB)
Communication object length expressed by the number of
registers
10 Greater than 0
upper byte (MSB)
11
lower byte (LSB)

IGS-NT Communication Guide 134

Standard response
Byte Meaning Note
0-1 Transaction Identifier Value from query
2-3 Protocol Identifier 0 = Modbus protocol
3 + 2 * Number of
4-5 Number of following bytes
registers.
0 Controller address Same as in the query
1 3 Same as in the query
2 Length of read data in bytes (L) Number of registers *2
Data of the 1st register
3 upper byte (MSB)
4 lower byte (LSB)
Data of the 2nd register
5 upper byte (MSB)
6 lower byte (LSB)
...
Data of the last register
L+1 upper byte (MSB)
L+2 lower byte (LSB)

Write Single Registers

Query
Byte Meaning Note
0 Controller address 1 to 32
1 6 Modbus function code
Communication object number
2 upper byte (MSB)
3 lower byte (LSB)
Data
4 upper byte (MSB)
5 lower byte (LSB)
Check field CRC
6 lower byte (LSB) see Check field calculation on page 145
7 upper byte (MSB)

IGS-NT Communication Guide 135

Standard response
Byte Meaning Note
0 Controller address Same as in the query
1 6 Same as in the query
Communication object number
2 upper byte (MSB) Same as in the query
3 lower byte (LSB)
Data
4 upper byte (MSB) Same as in the query
5 lower byte (LSB)
Check field CRC
6 lower byte (LSB) see Check field calculation on page 145
7 upper byte (MSB)

Exceptional response
Byte Meaning Note
0 Controller address Same as in the query
1 134 Function code + 128
2 2 see Error list on page 152
Check field CRC
3 lower byte (LSB) see Check field calculation on page 145
4 upper byte (MSB)

9.3.2 Modbus RTU

Direct connection:
Modbus communication via RS232 – single controller (page 132), Modbus communication
via RS485 (page 132), Modbus communication via I-LB+ (page 133)
8 data bits
1 stop bit
no parity
Modem connection
8 data bits
1 stop bit
no parity
Communication speed:
9600 / 19200 / 38400 / 57600 bps

IGS-NT Communication Guide 136

Transfer mode RTU
Function codes
3 (Read Multiple Registers)
6 (Write Single Register)
10 (Command)
16 (Write Multiple Registers)
The response to an incoming message depends on the communication speed. The delay is not shorter
than the time needed to send / receive 3 and ½ characters.
Note: The complete description of Modbus communication protocol can be found in
modbus.org/docs/PI_MBUS_300.pdf
and
rtaautomation.com/modbustcp/files/Open_ModbusTCP_Standard.pdf.

Read Multiple Registers

Query
Byte Meaning Note
0 Controller address 1 to 32
1 3 Modbus function code
Communication object number
2 upper byte (MSB)
3 lower byte (LSB)
Communication object length expressed by the number
of registers
4 Greater than 0
upper byte (MSB)
5
lower byte (LSB)
Check field CRC
see Check field calculation on
6 lower byte (LSB)
page 145
7 upper byte (MSB)

IGS-NT Communication Guide 137

Standard response
Byte Meaning Note
0 Controller address Same as in the query
1 3 Same as in the query
2 Length of read data in bytes (L) Number of registers ±2
st
Data of the 1 register
3 upper byte (MSB)
4 lower byte (LSB)
nd
Data of the 2 register
5 upper byte (MSB)
6 lower byte (LSB)
...
Data of the last register
L+1 upper byte (MSB)
L+2 lower byte (LSB)
Check field CRC
L+3 lower byte (LSB) see Check field calculation on page 145
L+4 upper byte (MSB)

Exceptional response
Byte Meaning Note
0 Controller address Same as in the query
1 131 Modbus fun.number 128
2 2 see Error list on page 152
Check field CRC
3 lower byte (LSB) see Check field calculation on page 145.
4 upper byte (MSB)

IGS-NT Communication Guide 138

Write Single Registers
Query
Byte Meaning Note
0 Controller address 1 to 32
1 6 Modbus function code
Communication object number
2 upper byte (MSB)
3 lower byte (LSB)
Data
4 upper byte (MSB)
5 lower byte (LSB)
Check field CRC
6 lower byte (LSB) see Check field calculation on page 145
7 upper byte (MSB)

IGS-NT Communication Guide 139

Write Multiple Registers
Query

Byte Meaning Note

0 Controller address 1 to 32
1 16 Modbus function code
Communication object number
2 upper byte (MSB)
3 lower byte (LSB)
Communication object length expressed by the number
of registers
4 Greater than 0
upper byte (MSB)
5
lower byte (LSB)
6 Length of written data in bytes (L) Number of registers = 2
st
Data of the 1 register
7 upper byte (MSB)
8 lower byte (LSB)
nd
Data of the 2 register
9 upper byte (MSB)
10 lower byte (LSB)
...
Data of the last register
L+5 upper byte (MSB)
L+6 lower byte (LSB)
Check field CRC
see Check field calculation on
L+7 lower byte (LSB)
page 145
L+8 upper byte (MSB)

IGS-NT Communication Guide 140

Standard response

Byte Meaning Note

0 Controller address Same as in the query
1 16 Same as in the query
Communication object number
2 upper byte (MSB) Same as in the query
3 lower byte (LSB)
Communication object length expressed by the number
of registers
4 Same as in the query
upper byte (MSB)
5
lower byte (LSB)
Check field CRC
see Check field calculation on
6 lower byte (LSB)
page 145
7 upper byte (MSB)

Exceptional response

Byte Meaning Note

0 Controller address Same as in the query
1 144 Function code + 128
2 2 see Error list on page 152
Check field CRC
3 lower byte (LSB) see Check field calculation on page 145
4 upper byte (MSB)

9.3.3 Alarm list reading

It is not possible to read alarm list simultaneously from more terminals. If the terminal starts reading, the
reading is locked for other terminals. It is unlocked 5 seconds after last reading of alarm list. The locked
terminal indicates to another terminal an error message.
The whole alarm list is stored in the cache memory at the moment of locking and the following reading of
records is performed from this memory. Locking is done only while reading the first record. So the successive
reading from the first to the last record is supposed.

Alarm list reading via Modbus

Since firmware version 2.5 and higher is possible to read alarm list via Modbus as a binary attributes of
protection states. For this function was reserved these ranges of registers.

Registers Register addresses Number of Registers Access Type of Data

45751 to 45875 5750 to 5874 125 Reading Domain
45876 to 46000 5875 to 5999 125 Reading Domain
46201 to 46325 6200 to 6324 125 Reading Domain

IGS-NT Communication Guide 141

Number of register of particular protection you can get as exporting of Modbus registers list from GenConfig.
Open an archive in GenConfig (ver. 2.5 and higher), open File menu and choose "Generate Cfg Image -->
Modbus registers all" (see “How get numbers of Modbus communication objects” chapter). Open the list of
Modbus registers you have got and see registers with number according the table. Here you can see meaning
of particular Modbus registers. Each register carries information about two protections (Protection#1 and
Protection#2).

Register Protection#2 Protection#1

45754 Warning 7 Warning 8
45755 Warning 9 Warning 10
45756 SD 11 SD 12
45863 Oil press Water temp
45864 Fuel level N/A
45925 BIN 1 BIN 2
45926 BIN 3 BIN 4

Meaning of register content

Register map
Bit 0-7 ................. Protection #1
Bit 8-15 ............... Protection #2
Bit 0-2 ................. Protection #1 Level 1

Value Meaning
0 Level 1 inactive
2 Level 1 active, confirmed
3 Level 1 active, blocked
4 Level 1 previously active, not confirmed yet
6 Level 1 active, not confirmed yet
7 Level 1 active, not confirmed yet, blocked

Bit 3-5 ................. Protection #1 Level 2

Value Meaning
0 Level 2 inactive
2 Level 2 active, confirmed
3 Level 2 active, blocked
4 Level 2 previously active, not confirmed yet
6 Level 2 active, not confirmed yet
7 Level 2 active, not confirmed yet, blocked

IGS-NT Communication Guide 142

Bit 6-7 ................. Protection #1 Sensor failure

Value Meaning
0 Sensor failure not active
1 Sensor failure active, confirmed
2 Sensor failure previously active, not confirmed yet
3 Sensor failure active, not confirmed yet

Bit 8-10 ................. Protection #2 Level 1

Bit 11-13 ................. Protection #2 Level 2

Bit 14-15 ................. Protection #2 Sensor failure

Value Meaning
0 Sensor failure not active
1 Sensor failure active, confirmed
2 Sensor failure previously active, not confirmed yet
3 Sensor failure active, not confirmed yet

IGS-NT Communication Guide 143

Example

Example Register Protection#2 Protection#1

45754 Warning 7 Warning 8
45755 Warning 9 Warning10
45756 SD 11 SD 12
45863 Oil press Water temp
45864 Fuel level N/A
45925 BIN 1 BIN 2
45926 BIN 3 BIN 4

Register number 45863 carries information about states of protections Oil press and Water temp. For
undersanding of particular bit meaning use previous register map according table bellow. The first line
contains numbers of bits of the registers, the second one contains values of particullar bits. Vallues of
rd
particullar sections are in 3 line, their meaninng is in the last line.
Level 1 = yellow level in protection settings
Level 2 = red level in protection settings

Protection#2 = Oil press Protection#1 = Water temp

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 1 1 0 0 1 1 0 0 1 0 0 0 0 1 0
1 4 6 1 0 2
Sensor failure
active, Level 2 previously Level 1 active, Sensor failure
Level 2 Level 1 active,
confirmed (or active, not not confirmed active,
inactive confirmed
not configured confirmed yet yet confirmed
as protection)

Meaning of particular bits

Bit Value of bit = 0 Value of bit = 1

the condition for activation of
protection is not blocked, if the condition for activation
0, 3, 8, 11 protection is fulfilled but
is fulfilled protection can be announced
protection is blocked
protection is not active (condition for activation is not protection is active (condition for
1, 4, 9, 12
fulfilled) activation is fulfilled)
protection has not been announced (the protection is protection has been announced
2, 5, 10, 13 not active or is active but blocked or it was active (is active and not blocked and
previously and was confirmed) was not confirmed)

IGS-NT Communication Guide 144

9.3.4 History reading
It is not possible to read history from more terminals simultaneously. Reading must be started by writing of an
index of requested history record. If the index is not written it is not possible to read neither history header nor
data part of the record. In this case the controller returns an error message. If the terminal writes the index of
requested record, history reading is locked for other terminals (i.e. reading and writing of an index of
requested record, reading of header and data part of the record). It is unlocked 5 seconds after the last history
reading. Locked history is indicated to other terminals by an error message.
Requested history record is stored at the moment of locking in the cache memory and following reading is
performed from this memory.
Note: History reading is not possible in some specific firmware versions. See the concrete firmware version
and its New Feature Lists.

9.4 Check field calculation

The check field allows the receiver to check the validity of the message. The check field value is the Cyclical
16 15 2
Redundancy Check (CRC) based on the polynomial x +x +x +1. CRC is counted from all message bytes
preceding the check field.

9.5 How get numbers of Modbus communication

objects

Communication objects can be spitted into two

groups:
Communication objects dependent on the
application type (SSB, SPM, SPtM, MEXT,
MINT, …).
Communication objects independent on the
application type.

Use GenConfig menu command File –> Generate

Cfg Image –> Generate Cfg Image (Comm.
Objects …) and Generate Cfg Image (Modbus
Registers all/used).
Image 9.1 A part of Cfg Image
(Modbus Register …) file

IGS-NT Communication Guide 145

Header Description
Registers(s) Register number; register address = register number – 1
Com.Obj. Corresponding communication object number
Name Communication object name
Dim Value dimension
Type Value data type (see Data types on page 149)
Len Data length in Bytes (max. 64)
Dec Number of decimals
Min Value low limit
Max Value high limit
Group Group of setpoints/values

9.6 User Modbus

This function is available to BaseBox controller with standard FW v 3.0 and higher.
User Modbus function allows users to assign up to 127 registers from range 42873 to 43000 to any value or
setpoint available for Modbus reading or writing in the controller. This can be used for standardizing the
Modbus communication or for quick batch reading or writing (note that it is possible to write no more than 16
registers in on multiple writing request).
It is not possible to read or write both standard registers and User Modbus registers in one request (e.g. batch
reading of registers 42998 to 43007 is not possible). It is perfectly fine to separate the request and read User
Modbus registers and standard registers individually.
User Modbus registers are assigned in the GenConfig as a standard part of configuration. See the figure
below for more information on how to assign a register. Assigned registers can be written and read the same
way as standard registers (refer to the chapter above).

IGS-NT Communication Guide 146

It is still possible to read the assigned object on its original register address if required.
6 back to Modbus Connection

IGS-NT Communication Guide 147

10 Modbus Appendix
10.1 Modbus Switches 148
10.2 Data types 149
10.3 Communication status 150
10.4 Error list 152

6 back to Table of contents

10.1 Modbus Switches

The “Modbus Switches” are two Modbus registers dedicated for continuous writing of binary information via
Modbus. Both registers are available on Modbus for simple writing (using command 6 or 16). The particular
bits of these registers are available as binary status for universal use in logical binary outputs of the controller
as “MODBUSSW1..MODBUSSW32”. No password is required for writing of those registers (if there is no
general password for Modbus writing). There are two Values “ModbusSw1” and “ModbusSw2” in group “Log
Bout” available for back-reading.

Modbus
Register for writing register Value for back-reading Modbus register number
number
See export of Modbus registers,
ModbusSw1 46337 ModbusSw1
value ModbusSW1
See export of Modbus registers,
ModbusSw2 46338 ModbusSw2
value ModbusSW2

Note: Modbus register number for back-reading may be different based on controller family. Check register
numbers in list of registers described in “How get numbers of Modbus communication objects”. Register
number for writing is not mentioned in list of registers.

Note: The LSB of ModbusSw1 (46337) corresponds with LBO “ModbusSw1”

The LSB of ModbusSw2 (46338) corresponds with LBO “ModbusSw17”

Register for writing Modbus register number LBO ModbusSw16 ………………….ModbusSw1

ModbusSw1 (46337) 000F HEX 0000 0000 0000 1111

Modbus register
Register for writing LBO ModbusSw32 ………………….ModbusSw17
number
ModbusSw2 (46338) F000 HEX 1111 0000 0000 0000

IGS-NT Communication Guide 148

10.2 Data types
The following table contains the communication objects data types and their representation in the data part of
the communication function.

Number of Data part of the communication

Data type Meaning
registers function
MSB1 = sign extension LSB1
Integer8 Signed integer – 8 bits 1
LSB1 = comm. object value
MSB1 = 0
Unsigned8 Unsigned integer – 8 bits 1
LSB1 = comm. object value
MSB1 = comm. object value, bits 15-8
Integer16 Signed integer – 16 bits 1
LSB1 = comm. object value, bits 7-0
MSB1 = comm. object value, bits 15-8
Unsigned16 Unsigned integer – 16 bits 1
LSB1 = comm. object value, bits 7-0
MSB1 = comm. object value, bits 31-24
LSB1 = comm. object value, bits 23-16
Integer32 Signed integer – 32 bits 2
MSB2 = comm. object value, bits 15-8
LSB2 = comm. object value, bits 7-0
MSB1 = comm. object value, bits 31-24
LSB1 = comm. object value, bits 23-16
Unsigned32 Unsigned integer – 32 bits 2
MSB2 = comm. object value, bits 15-8
LSB2 = comm. object value, bits 7-0
MSB1 = 0
Binary8 Binary number – 8 bits 1
LSB1 = comm. object value
MSB1 = comm. object value, bits 15-8
Binary16 Binary number – 16 bits 1
LSB1 = comm. object value, bits 7-0
MSB1 = comm. object value, bits 31-24
LSB1 = comm. object value, bits 23-16
Binary32 Binary number – 32 bits 2
MSB2 = comm. object value, bits 15-8
LSB2 = comm. object value, bits 7-0
MSB1 = 0
Char ASCII character 1
LSB1 = comm. object value
MSB1 = 0
List String list 1
LSB1 = comm. object value
MSB1 = 1. character of the string
ASCII string of max. LSB1 = 2. character of the string
ShortStr length of 15 characters 8 MSB2 = 3. character of the string
(zero terminated string) LSB2 = 4. character of the string
…
MSB1 = 1. character of the string
ASCII string of max.
LSB1 = 2. character of the string
LongStr length of 31 characters 16
MSB2 = 3. character of the string
(zero terminated string)
LSB2 = 4. character of the string

IGS-NT Communication Guide 149

Number of Data part of the communication
Data type Meaning
registers function
…
MSB1 = BCD(day)
LSB1 = BCD(month)
MSB2 = BCD(year)
LSB2 = 0
example:
Date Date 2
MSB1 = 18 (HEX)
LSB1 = 04 (HEX)
MSB2 = 01 (HEX)
LSB2 = 0
→ Date = 18.4.(20)01
MSB1 = BCD(hour)
LSB1 = BCD(minute)
MSB2 = BCD(second)
LSB2 = 0
example:
Time Time 2
MSB1 = 20 (HEX)
LSB1 = 24 (HEX)
MSB2 = 02 (HEX)
LSB2 = 0
→ Time = 20:24:02
MSB1 = x[0]
LSB1 = x[1]
MSB2 = x[2]
LSB2 = x[3]
Field n bytes …
Domain C-declaratione: unsigned n n is even number:
char x[n] MSBm-1 = x[n-2]
LSBm = x[n-1]
n is odd number:
MSBm-1 = x[n-1]
LSBm = 0
String depends on string characters coding depends on
String
(Zero terminated string) register number chosen language (8 bit coding, ECU)

10.3 Communication status

Communication object number:
24571
Operation:
Read only
Data type:

IGS-NT Communication Guide 150

Binary32
Meaning:
Bit 0 Internal terminal in InteliSys does not work (0 for other controllers).
Bit 1 Invalid controller software (based on CRC).
Bit 2 Invalid controller configuration (based on CRC).
Bit 3 In the event history is present at least one unread record.
P type setpoints are invalid. P type setpoints are representing the controller setpoints. Values of
Bit 4 these setpoints can be set from connected terminals. If these setpoints are invalid, the
application functions are blocked. Setpoints recovery is needed.
R type setpoints are invalid. R type setpoints are representing the data, that is only initialized
from connected terminals, but its updating is made by the controller itself (e.g. statistic or time
Bit 5
and date). If these setpoints are invalid, their change from the controller is blocked. Setpoints
recovery is needed.
Bit 6 The event history was cleared.
Bit 7 The event history was filled up at least once.
Bit 8 P type setpoint change occurred (reading resets this bit).
Bit 9 R type setpoint change occurred (reading resets this bit).
Bit 10 Controller type – see the table below.
Bit 11 Alarm list not empty.
Bit 12 Alarm list change (reading resets this bit).
Bit 13 New item added into alarm list (reading resets this bit).
Bit 14 Internal controller terminal is locked up for setpoint change.
Bit 15 Invalid configuration format.
Bit 16 Diagnostic codes change (reading resets this bit, only for IL-NT / ID controllers).
Bits 20 Controller type (*).
Bit 21-17 Reserve (= 0).
Bits 22-21 Password level for Setpoints and Commands write (only for IL-NT / ID controllers).
Bit 23 Controller was initiated.
Bits 28-24 Communication module version.
Bits 29 Remote terminal is connected.
Bits 30 Controller type – see the table below.
Bits 31 Reserve (= 0)

IGS-NT Communication Guide 151

(*) Controller type

Bit 20 Bit 30 Bit 10 Controller

0 0 0 InteliSys
0 0 1 InteliGen
0 1 0 IL-NT
0 1 1 InteliDrive
1 0 0 IG/IS-NT
1 0 1 Reserve
1 1 0 Reserve
1 1 1 Reserve

Note: The MODE< and MODE> commands have not been implemented to the register oriented Modbus
commands.

10.4 Error list

If the controller encounters an error when processing the query, it returns the exceptional response instead of
the normal one to the terminal. An exception has always the value 2 (Illegal Data Address). After receiving the
exceptional response, the terminal should read the communication object 24523 containing the last error
specification. The meaning of an error can be found out from the following table.

MSB1 LSB1 MSB2 LSB2

Meaning
(*) (*) (*) (*)
0 0 0 0 No error.
0 0 2 6 Comm. Object nonexistent.
Illegal access:
0 0 1 6 Read (write) of the communication object. Object intended only
for write (read).
255 0 0 8 Controller application isn’t active.
254 0 0 8 Inexpectant message.
253 0 0 8 No more unread records in event history.
252 0 0 8 Setpoint not defined in controller configuration.
251 0 0 8 Bad write data length.
250 0 0 8 Invalid password.
249 0 0 8 No more free space in front for EEPROM.
248 0 0 8 Too long parameter.
247 0 0 8 Invalid controller configuration.
246 0 0 8 Undefined command.
245 0 0 8 Command can’t be done.
244 0 0 8 Too long data answer form peripheries (max. 4 B).
243 0 0 8 Too long data for peripheries (max. 4 B).
242 0 0 8 Unavailable peripheries.

IGS-NT Communication Guide 152

MSB1 LSB1 MSB2 LSB2
Meaning
(*) (*) (*) (*)
241 0 0 8 Required operation isn’t available in peripheries.
Operation cannot be performed now, the terminal has to repeat
the request. This error can occur when an operation with
240 0 0 8 EEPROM memory (setpoint write, history record read) is
required at the same time while an internal EEPROM write cycle
takes place.
239 0 0 8 Controller programming can’t be carry out.
238 0 0 8 Write cannot be performed – power supply failure detected.
Another active call request is present.
This error code can be returned by the controller as the
237 0 0 8
response to the communication object. Object 24540 write –
active call termination.
236 0 0 8 Programming error.
This error is reported by iG-MU module (Modem Bridge) in the
case of a connection failure between the module and the
235 0 0 8
addressed controller. The terminal can evaluate this error as a
communication timeout with the controller.
234 0 0 8 Write cannot be performed – periphery not responding.
Write cannot be performed – setpoint nonexistent in any
233 0 0 8
periphery.
232 0 0 8 Bad access code for communication from a remote terminal.
Invalid controller address: value out of range 1 to 32 or already
231 0 0 8 used. This error is a reaction on communication object. Object
24537 write.
230 0 0 8 Error in definition for communication oscilloscope objects.
Undefined action. A reaction on communication object. Object
229 0 0 8
24521 write.
Action (although defined) cannot be performed. A reaction on
228 0 0 8
communication object. Object 24521 write.
227 0 0 8 Written object value is not acceptable.
226 0 0 8 No more free slots.
225 0 0 8 No connection.
224 0 0 8 Locked, block reading is active.
223 0 0 8 Locked, commanding is active.
222 0 0 8 Locked, the history reading is active.
221 0 0 8 Locked, the programming is active.
220 0 0 8 Communication error.
219 0 0 8 Request for – data.
218 0 0 8 Request for – SMS.

IGS-NT Communication Guide 153

MSB1 LSB1 MSB2 LSB2
Meaning
(*) (*) (*) (*)
217 0 0 8 Request for – email.
216 0 0 8 Request for – mobile email.
215 0 0 8 Request for - fax.
214 0 0 8 Wrong access code, the connection must be terminated.
213 0 0 8 Reserved for HW key.
212 0 0 8 Reserved for DENOX.
211 0 0 8 Insufficient access rights.
210 0 0 8 The request can be submitted only by the administrator (User 0).
The administrator has entered a wrong user identification
209 0 0 8
number.
Not possible to write, the communication object has forced
208 0 0 8
value.
207 0 0 8 The administrator requests an unsupported operation.
206 0 0 8 Selected communication mode doesn’t allow required interface.
205 0 0 8 Selected interface doesn’t allow required communication mode.
HW data flow control for modem communication. Sending as
204 0 0 8
answer to request to read 24437 communication object.
SW data flow control for modem communication. Sending as
203 0 0 8
answer to request to read 24437 communication object.
202 0 0 8 Access denied from actual IP address.
201 0 0 8 Unknown fault.
200 0 0 8 Invalid register.
199 0 0 8 Reading of alarm list is locked.
198 0 0 8 Reading of history is locked.
Reading of alarm list has to be started by reading the first
197 0 0 8
record.
196 0 0 8 The history record is not defined for reading of history.
195 0 0 8 It is not possible to request such number of registers.
201 0 0 8 Unknown fault.
200 0 0 8 Invalid register.
199 0 0 8 Reading of alarm list is locked.
198 0 0 8 Reading of history is locked.

IGS-NT Communication Guide 154

Note: (*) in DEC
dedicated for Internet Bridge

Note: ComAp believes that all information provided herein is correct and reliable and reserves the right to
update at any time. ComAp does not assume any responsibility for its use unless otherwise expressly
undertaken.

6 back to Modbus Appendix

6 back to Table of contents

IGS-NT Communication Guide 155

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