RTU500 series

RTU500 series Remote Terminal Unit

Protocol description
Host Communication Interface with RP570/71
RTU500 series Remote Terminal Unit Revision

Revision
Document identity: 1KGT 150 518 V013 1
Revision: Date: Changes:
0 03/2002 Base version
1 06/2002
2 07/2002 RX telegram for flow control supported
FCOM #4 supported
3 12/2002 Chapter 1.2 added
4 03/2004 Chapter 2.2 ‘Redundant Lines’ added
Chapter 1.3 ‘Host Parameter’ added
Chapter 11 ‘System Events’ updated
New time synchronization mode added
5 08/2004 Chapter 11 ‘System Events’ updated
6 11/2004 Chapter System Commands updated
7 04/2006 Loop Reversal Unit DSTC 3002 supported
8 12/2006 Value range of DSO corrected
9 06/2009 Flag ‘In use’ introduced
‘Transparent Data’ introduced
‘Interlock with local control authority’
New chapter: Dial up
10 11/2009 Dial up parameters corrected
11 02/2011 Configuration commands (FTAB loading) introduced with Release
10.1
12 02/2013 Details on MFI and EPI updated
Details on ASO updated
Correction DSTC3002
Details on PRI message transmission added
FTAB download made configurable
Updated section on Transparent Data
Details on ITI updated
13 04/2017 New layout
Updated chapter 'Line parameter' (PR#22744)

ABB AG - 1KGT 150 518 V013 1

Revision RTU500 series Remote Terminal Unit

1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Contents

Contents
1 Introduction.................................................................................................................... 1-1
1.1 Preface................................................................................................................1-1
1.2 References.......................................................................................................... 1-1
1.3 Conventions........................................................................................................ 1-1

2 Physical Layer................................................................................................................ 2-1

2.1 General............................................................................................................... 2-1
2.2 Communication Interfaces...................................................................................2-1
2.3 Host Parameters.................................................................................................2-1

3 Link Layer...................................................................................................................... 3-1

3.1 Line Parameter................................................................................................... 3-1
3.2 Redundant Communication Lines....................................................................... 3-1
3.3 Dial-up function...................................................................................................3-4
3.3.1 General functionality...........................................................................3-4
3.3.2 Dial up Configuration......................................................................... 3-4
3.4 Loop Reversal Unit............................................................................................. 3-8

4 Application Layer............................................................................................................4-1

5 Parameters and addressing........................................................................................... 5-1

5.1 Monitoring Direction............................................................................................ 5-1
5.2 Command Direction............................................................................................ 5-1

6 Data types - monitoring direction................................................................................... 6-1

6.1 AMI – Analog Measured Information................................................................... 6-1
6.1.1 Supported data types........................................................................ 6-1
6.1.2 Additional information.........................................................................6-1
6.1.3 Conversion of value........................................................................... 6-1
6.1.4 Conversion of quality descriptors....................................................... 6-1
6.2 BSI – Bit String Information................................................................................ 6-2
6.2.1 Supported data types........................................................................ 6-2
6.2.2 Additional information.........................................................................6-2
6.2.3 Conversion of value........................................................................... 6-2
6.2.4 Conversion of quality descriptors....................................................... 6-2
6.3 DMI – Digital Measured Information.................................................................... 6-2
6.3.1 Supported data types........................................................................ 6-3
6.3.2 Additional information.........................................................................6-3
6.3.3 Conversion of value........................................................................... 6-3
6.3.4 Conversion of quality descriptors....................................................... 6-3
6.4 DPI – Double Point Information...........................................................................6-3
6.4.1 Supported data types........................................................................ 6-3
6.4.2 Additional information.........................................................................6-4
6.4.3 Conversion of values..........................................................................6-4

ABB AG - 1KGT 150 518 V013 1 | I

Contents RTU500 series Remote Terminal Unit

6.4.4 Conversion of quality descriptors....................................................... 6-4

6.5 EPI – Protection Event Information..................................................................... 6-4
6.5.1 Supported data types........................................................................ 6-4
6.5.2 Additional information.........................................................................6-5
6.5.3 Conversion of value........................................................................... 6-5
6.5.4 Conversion of quality descriptors....................................................... 6-5
6.6 ITI – Integrated Totals Information.......................................................................6-5
6.6.1 Supported data types........................................................................ 6-5
6.6.2 Additional information.........................................................................6-6
6.6.3 Conversion of value........................................................................... 6-6
6.6.4 Conversion of quality descriptors....................................................... 6-6
6.6.5 Additional Parameter in RP570/71 protocol....................................... 6-6
6.7 MFI – Measured Float Information...................................................................... 6-6
6.7.1 Supported data types........................................................................ 6-6
6.7.2 Additional information.........................................................................6-7
6.7.3 Conversion of value........................................................................... 6-7
6.7.4 Conversion of quality descriptors....................................................... 6-7
6.8 SPI – Single Point Information............................................................................ 6-7
6.8.1 Supported data types........................................................................ 6-8
6.8.2 Additional information.........................................................................6-8
6.8.3 Conversion of values..........................................................................6-8
6.8.4 Conversion of quality descriptors....................................................... 6-8
6.9 STI – Step Position Information.......................................................................... 6-8
6.9.1 Supported data types........................................................................ 6-9
6.9.2 Additional information.........................................................................6-9
6.9.3 Conversion of values..........................................................................6-9
6.9.4 Conversion of quality descriptors....................................................... 6-9

7 Data types - controlling direction................................................................................... 7-1

7.1 ASO – Analog Setpoint Output...........................................................................7-1
7.1.1 Supported data types........................................................................ 7-1
7.1.2 Command authority........................................................................... 7-1
7.1.3 FTAB download................................................................................. 7-1
7.1.4 Additional information.........................................................................7-1
7.1.5 Conversion of value........................................................................... 7-1
7.2 BSO – Bit String Output..................................................................................... 7-2
7.2.1 Supported data types........................................................................ 7-2
7.2.2 Command authority........................................................................... 7-2
7.2.3 FTAB download................................................................................. 7-2
7.2.4 Additional information.........................................................................7-2
7.2.5 Conversion of value........................................................................... 7-2
7.3 DCO – Double Command Output.......................................................................7-2
7.3.1 Supported data types........................................................................ 7-3
7.3.2 Command authority........................................................................... 7-3

II | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Contents

7.3.3 FTAB download................................................................................. 7-3

7.3.4 Additional information.........................................................................7-3
7.3.5 Conversion of value........................................................................... 7-3
7.4 DSO – Digital Setpoint Output............................................................................ 7-3
7.4.1 Supported data types........................................................................ 7-4
7.4.2 Command authority........................................................................... 7-4
7.4.3 FTAB download................................................................................. 7-4
7.4.4 Additional information.........................................................................7-4
7.4.5 Conversion of values..........................................................................7-4
7.5 RCO – Regulation Command Output................................................................. 7-4
7.5.1 Supported data types........................................................................ 7-5
7.5.2 Command authority........................................................................... 7-5
7.5.3 FTAB download................................................................................. 7-5
7.5.4 Additional information.........................................................................7-5
7.5.5 Conversion of value........................................................................... 7-5
7.5.6 Conversion of causes of transmission................................................7-5
7.6 SCO – Single Command Output........................................................................ 7-5
7.6.1 Supported data types........................................................................ 7-6
7.6.2 Command authority........................................................................... 7-6
7.6.3 FTAB download................................................................................. 7-6
7.6.4 Additional information.........................................................................7-6
7.6.5 Conversion of values..........................................................................7-6

8 Transparent Data........................................................................................................... 8-1

9 File Transfer....................................................................................................................9-1

10 Internal Functions......................................................................................................... 10-1

10.1 Status check.....................................................................................................10-1
10.1.1 Supported data types...................................................................... 10-1
10.1.2 Values.............................................................................................. 10-1
10.1.3 Command authority......................................................................... 10-1
10.1.4 Additional information.......................................................................10-1
10.2 Time synchronization........................................................................................ 10-1
10.2.1 Supported data types...................................................................... 10-2
10.2.2 Values.............................................................................................. 10-2
10.2.3 Command authority......................................................................... 10-2
10.2.4 Additional information.......................................................................10-2
10.3 Cold start RTU..................................................................................................10-2
10.3.1 Supported data types...................................................................... 10-2
10.3.2 FCOM number................................................................................. 10-2
10.3.3 Command authority......................................................................... 10-2
10.3.4 Additional information.......................................................................10-3
10.4 New Configuration for Loop Reversal Unit........................................................ 10-3
10.4.1 Supported data types...................................................................... 10-3

ABB AG - 1KGT 150 518 V013 1 | III

Contents RTU500 series Remote Terminal Unit

10.4.2 FCOM number................................................................................. 10-3

10.4.3 Command authority......................................................................... 10-3
10.4.4 Additional information.......................................................................10-3
10.5 FTAB loading.................................................................................................... 10-3
10.5.1 Preconditions................................................................................... 10-4
10.5.2 Restrictions...................................................................................... 10-4
10.5.3 Supported configuration commands (FTAB)..................................... 10-4
10.5.4 Procedure........................................................................................ 10-5
10.6 System Events.................................................................................................. 10-5
10.7 System Commands.......................................................................................... 10-6

11 Interoperability List....................................................................................................... 11-1

11.1 Supported and selectable parameters.............................................................. 11-1
11.2 Network configuration....................................................................................... 11-1
11.3 Physical Layer...................................................................................................11-1
11.3.1 Transmission speed (monitor direction)............................................ 11-1
11.3.2 Transmission speed (control direction)............................................. 11-1
11.4 Link Layer......................................................................................................... 11-1
11.5 Application Layer.............................................................................................. 11-2
11.5.1 Process information in monitor direction.......................................... 11-2
11.5.2 Process information in control direction........................................... 11-2
11.6 Basic Application Functions.............................................................................. 11-3

12 Glossary....................................................................................................................... 12-1

IV | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Introduction
Preface

1 Introduction

1.1 Preface
This document describes the functions of the host communication interface in RTU500 series ac-
cording to RP570/71.

1.2 References
[1] Functional Description WKA006 1KSE
S.P.I.D.E.R. RTU PROTOCOL 570 and 571 300000-VW
(RP570 and RP571)
[2] Implementation of the S.P.I.D.E.R. RTU WLA007 1KSE
PROTOCOL 570 and 571 300000-MS
[3] RTU500 series interfaces and protocols 1KGT 150 853
(1KGT 150 853)

1.3 Conventions
In this document function codes of data types according to RP570/71 are marked with square
brackets: <Function code>

Bold fonts with the table heading "Parameter name" are references to configuration parameters
in RTUtil500. The parameter is followed by the parameter location where to find this parameter in
RTUtil500. The first element of the parameter location defines the node in the hardware tree on the
left side (e. g. RTU, CMU, line, IED) and the second element defines selected header control tab in
the parameter window on the right side (e. g. general, interfaces, protocol).

Example:

Parameter name Default Parameter location

In use Enabled data point (e.g. SPI) - line T101/104

If enabled, the data point is transmitted to the host communication interface.

This setting refers to data in monitoring and command direction.

In this document references to elements of the standard and other references will be printed in
brackets. Example: [2, 7.4]

The tables in the next chapters include lists of the functions, options and message types supported
according to the protocol structure given in IEC 60870-5 (EPA three layer model) for

• the physical layer

• the link layer
• the application layer

This layered model is valid for the protocol RP570/71.

ABB AG - 1KGT 150 518 V013 1 | 1-1

Introduction RTU500 series Remote Terminal Unit
Conventions

1-2 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Physical Layer
General

2 Physical Layer

2.1 General
The protocol RP570/71 is a serial protocol, running on a serial communication line of a CMU. For
more details see RTU500 series interfaces and protocols (1KGT 150 853) [3]:

2.2 Communication Interfaces

Set the communication parameters according to the following table:

Parameter name Parameter range / Explanation Default

Interface Type See 1KGT 150 714 RS232C

Baud Rate 50, 75, 100, 110, 200, 300, 600, 1200, 1500, 2400, 4800, 9600
9600, 19200, 38400

Modem Control - depends on the interface type used -

Transmit Delay Time Enabled / Disabled Disabled

If enabled: 30 ms
1 ... 10.000 ms
Delay before transmitting telegrams

Send PRI message 1 Enable/Disable Disable

If Modem Control is selected as Dial up, this parameter is not
editable.

PRI message repetition time If Send PRI message is enabled: 60 s

1 to 65535 s.
PRI messages are repeated at “PRI message repetition
time”, if any PRI message transmission is pending.
If Modem Control is selected as Dial up, this parameter is al-
ways set to 1.

Table 1: Communication settings

1 If parameter 'Dial-up' is enabled, RTU starts sending PRI messages with established modem connection.

If parameter 'Send PRI message' is enabled and dial-up is disabled, PRI message will be sent by RTU, if a
PRIO 1 event occurs and the RTU was not polled on the line at least for the time configured for parameter
'PRI message repetition time'.

2.3 Host Parameters

The RP570/71 host interface will be configured according to the following tables.

ABB AG - 1KGT 150 518 V013 1 | 2-1

Physical Layer RTU500 series Remote Terminal Unit
Host Parameters

Parameter name Default Parameter location

Host number 1 CMU - all interfaces

Logical number of this host interface. Value range: 1 to 16.

The Host Number has to be unique in a system,
and will point to the data in the system event block

Interlock with local control authority Disabled CMU - interfaces

If enabled:
No commands are accepted from the host, as long as a user
has successfully requested the 'Command Authority' in the 'Integrated HMI'

Parameter name Default Parameter location

Buffer size of priority 1 datapoints 500 CMU - Ethernet/ serial interfaces

Transmit buffer size for priority 1 data.

Value range: 100 to 3000 entries

Buffer size of priority 2 datapoints 500 CMU - Ethernet/ serial interfaces

Transmit buffer size for priority 2 data.

Value range: 100 to 3000 entries

Buffer size of Integrated Totals (ITI) 1 000 CMU - Ethernet/ serial interfaces

Transmit buffer size for Integrated Total.

Value range: 10 to 10000 entries

Priority of ITI queue 2 CMU - Ethernet/ serial interfaces

Priority of the transmit buffer for Integrated Totals.

Value range: 1 or 2

Buffer size of spontaneous transmitted Ana- 500 CMU - Ethernet/ serial interfaces
log Measured values (AMI)

Transmit buffer size for spontaneous transmitted measurements.

Value range: 100 to 3000

Queue storage timeout enabled, 120 min CMU - Ethernet/ serial interfaces

Delay time, before the buffers are cleared.

Value range: 1 to 10080 minutes

2-2 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Link Layer
Line Parameter

3 Link Layer

3.1 Line Parameter

A layered model is used for all RTU500 series host interfaces. The basic link procedures for data
transfer, protection against loss and duplication and flow control are described in [2].

The RTU number can be configured on the line tab of RTUtil500 individually for every host interface.

Parameter name Default Parameter location

RTU number 1 RTU – Line parameter

Communication primitives like framing of messages, parity checks or retransmissions are handled by
the telecontrol protocol. These tasks are executed in the link layer that connects RTUs with control
systems or other RTUs.

Parameter name Default Parameter location

Protocol type RP571 Enabled RP570_71 – Line parameters

Value range: Enabled / Disabled

If enabled: RP571

If disabled: RP570

Gap supervision time Enabled, 1t0 RP570_71– Line parameters

Value range: Enabled / Disabled, 1 ... 255 t0 (t0: Time of one bit)

Local Time Disabled RP570_71– Line parameters

If enabled: The RTU uses daylight saving.

FTAB download Disabled RP570_71– Line parameters

If enabled: FTAB download feature is activated.

Cycle time offline supervision Enabled, 120 s RP570_71– Line parameters

Value range: Enabled / Disabled, 1 ... 65535 s

If enabled: Specification whether offline supervision of the primary station shall take place.

Time parameters have to be calculated on the basis of the communication technology used.

3.2 Redundant Communication Lines

The redundant communication line function of RTU500 series is used to raise the connection avail-
ability to the controlling station. This function is implemented according to [1] and [2].

General rules and functions:

• Both communication lines have the same Router/Process-RTU-Number(s)

• The switching between the lines is generally initiated by the controlling station
• After a redundancy switching a general interrogation must be sent from the controlling station

ABB AG - 1KGT 150 518 V013 1 | 3-1

Link Layer RTU500 series Remote Terminal Unit
Redundant Communication Lines

• During switchover between the redundant lines, the RTU secures that no data point information
get lost
• After a disruption the connection has to be established again

The following list shows the principle functionality of the redundant communication lines with
RP570/71 protocol.

• The controlling station establishes the link to the controlled station, using the primary link 1
• The connection is established (1), the controlling station checks the redundant line with the
telegram ‘Reset Sequence Number’ (RSEQ)
• The active communication line is interrupted (2), the controlling station gets no answer from the
controlled station
• The redundant link 2 is available (RSEQ is positive acknowledged). That is why the controlling
station will switch over to this line (3)
• In order to test the new redundant communication link 1, the controlling station starts sending
the test telegram RSEQ (4)

The configuration of redundant lines is part of the engineering tool RTUtil500. The interfaces could
be configured with different physical parameters.

3-2 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Link Layer
Redundant Communication Lines

LS Link 1 RTU LS Link 2 RTU

SCI

SCI

EXR 1

RSEQ
RB
EXR
Daten

RB

Daten

RB

CCR2
. .
. 2 .
. .
RB
RSEQ

RB EXR

RB
3

SCI

EXR
4
RSEQ
RB

Daten

RSEQ

Figure 1: Sequence of telegrams over redundant communication lines

ABB AG - 1KGT 150 518 V013 1 | 3-3

Link Layer RTU500 series Remote Terminal Unit
Dial-up function

3.3 Dial-up function

3.3.1 General functionality

In the dial-up mode a communication link can be established via HAYES-compatible modems be-
tween a RTU and a higher-level system. In this case the RTU receives telephone calls and then
switches over to the data mode.

When a telephone connection has been established, but communication according to the protocol
does not take place the telephone connection will be terminated after elapse of the time defined
with the interface parameter Maximum time period until connection is established.

Additionally, the RTU may ring up the higher-level system on its own as soon as spontaneous
changes of Prio1 data points (see address parameter) or system events have occurred. It is always
the task of the control system to terminate the connection to the RTU.

If there is no communication with the control system for a configurable time, the RTU terminates the
telephone connection by itself. (Parameter: Time period until hanging up because of inactivity).

When the attempt to establish the telephone connection has failed dialling will be repeated several
times (interface parameter: Maximum number of dialling attempts). If the higher-level system sup-
ports a modem pool functionality and several telephone numbers have been configured the next
telephone number will be called and establishing the telephone connection be attempted.

3.3.2 Dial up Configuration

In addition to the protocol-specific settings described in the chapters 1 and 2, some settings shall
be made for the dial-up mode, too.

The dial-up mode is available only, if the parameter Modem control on the serial communication
interface of the CMU is set to Dial up (external modem DCD handshake).

Parameter name Default Parameter location

Modem control Direct link (TxD/RxD) CMU - Serial interface

All interface settings such as parity, baud rate, number of data bits, etc. depend on the protocol
selected and are valid for both the configuration and the data mode.

The dial-up mode parameters are available in separate dialog windows in the Network- and Hard-
ware Tree of the configuration tool RTUtil500.

3-4 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Link Layer
Dial-up function

Dial-up parameters at the the serial interfaces of the CMU

Parameter name Default Parameter location

Escape sequence preceding silent time 1 s CMU - serial interfaces (dial up parameters)

Range: 1 … 255 s

Minimal delay time between data mode and Hayes command mode

Configuration string for modem ATE0X3S0=1 CMU - serial interfaces (dial up parameters)

String

Configuration string initializing the modem used.

Note:The configuration string depends on the type of modem, the modem manufacturer and the modem function used.

Dial string for modem ATDT CMU - serial interfaces (dial up parameters)

String

Command Hayes to establish a modem connection

Escape string for modem +++ CMU - serial interfaces (dial up parameters)

String

Command Hayes to switch from data mode to command mode

Answer string for modem Disable CMU - serial interfaces (dial up parameters)

<no defaults>

String

Enable/Disable

If enabled: An incoming call is answered with this string.

Note: For standard HAYES modems the value S0=0 shall be set in the configuration string, if this feature is enabled (see
modem description).

Hang up string for modem ATH CMU - serial interfaces (dial up parameters)

String

String requesting the modem to terminate the telephone connection.

Connect string of modem CONNECT CMU - serial interfaces (dial up parameters)

String

String sent by the modem if a telephone connection has been established.

OK string of modem OK CMU - serial interfaces (dial up parameters)

String

String sent by the modem to acknowledge a command

Disconnect string of modem NO CARRIER CMU - serial interfaces (dial up parameters)

String

String sent by the modem if the connection is aborted

Ring string of modem RING CMU - serial interfaces (dial up parameters)

String

String sent by the modem signaling an incoming call.

Busy string of modem BUSY CMU - serial interfaces (dial up parameters)

String

ABB AG - 1KGT 150 518 V013 1 | 3-5

Link Layer RTU500 series Remote Terminal Unit
Dial-up function

Parameter name Default Parameter location

With this string the modem signals that the remote terminal called is busy.

PIN configuration string for GSM modem Disable CMU - serial interfaces (dial up parameters)

String

Enable/Disable

Service configuration string for GSM modem Disable CMU - serial interfaces (dial up parameters)

String

Enable/Disable

Dial-up parameters of the RTU

The configuration of the dial-up timeout parameters can be found only in the network tree at the
RTU node (left window) and on the specific line (right window) at the tab dial up parameters.

3-6 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Link Layer
Dial-up function

Parameter name Default Parameter location

Maximum time till link is established 60 s Network tree only:

RTU - line

Value range: 1 ... 255 s

Maximum time interval until the connection to a higher-level system must be established. When this time has elapsed the
modem connection will be terminated.

Maximum number of dial attempts 2 Network tree only:

RTU - line

Value range: 1 ... 255 attempts

Maximum number of times a telephone number is called. If the higher-level system supports a modem-pool function the next
telephone number will then be called.

Time between dial attempts 60 s Network tree only:

RTU - line

Value range: 1 ... 15 300 s

When an attempt has failed the number will be called again after elapse of this time.

Time between two series of dial attempts 7 800 s Network tree only:
RTU - line

Value range: 60 … 15 300 s

Waiting time between dial series with different telephone numbers (modem pool)

Inactivity hang up delay disabled Network tree only:

RTU - line

Value range: disabled, 1 ... 15 300 s

Inactivity hang up delay after commands disabled Network tree only:

RTU - line

Value range: disabled, 1 ... 15 300 s

Maximum period for one telephone connec- 600 s Network tree only:
tion RTU - line

Value range: disabled, 10 ... 15 300 s

Cyclic calls of dial up slave disabled Network tree only:

RTU - line

Value range: disabled / enabled

If enabled: Start time of cyclic calls [hour, minutes]; Time interval between two calls [days, hours, minutes]

Parameter window: Telephone number(s) of the RTU

This window can be found in the Network Tree, at the RTU node, Line T570/71.

This window is not needed for the Host Communication interface

Dial-up parameters of the control system

This window can be found only in the network tree at the connected control system.

ABB AG - 1KGT 150 518 V013 1 | 3-7

Link Layer RTU500 series Remote Terminal Unit
Loop Reversal Unit

Parameter name Default Parameter location

Telephone number 1 <no default> Network tree only:

Control system - Telephone numbers

Value range: string (length max. 27 characters)

Telephone number under which a higher-level system can be called.

Telephone number 2 ... 16 deactivated Network tree only

Control system - Telephone numbers

Value range: deactivated, string (length max. 27 characters)

Additional telephone numbers under which a higher-level system can be called. If the higher-level system does not support
the modem-pool function the telephone numbers need not to be configured.

3.4 Loop Reversal Unit

The Loop Reversal Unit DSTC 3002 in another way to build up redundant communication lines.
In order to build up a communication loop, each RTU has to be connected to a DSTC 3002 unit.
The Loop Reversal Unit is switching the transmit (TxD) and receive (RxD) lines by using the control
lines RTS (S2) and DTR (S1.2). Because the DSTC 3002 is using the RTS signal for switching, the
communication line can run only in full duplex mode.

Figure 2: Loop Reversal Unit DSTC 3002

The RTU has to be connected either to communication port A or B of the host, but not to both ports
in parallel. That is way the loop has to be disconnected at one point.

The control system configures the Loop Reversal Unit using the Function Command (FCOM) #8.
After a restart and after a communication break the RTU switches cyclically between the two lines,
in order to find the active communication line.

3-8 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Link Layer
Loop Reversal Unit

Parameter name Default Parameter location

Time-Out Loop RTU – Line Parameter

ADVICE

The Loop Reversal functionality is limited to the communication ports with interface type RS232C.

ABB AG - 1KGT 150 518 V013 1 | 3-9

Link Layer RTU500 series Remote Terminal Unit
Loop Reversal Unit

3-10 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Application Layer

4 Application Layer
Overview of the message types of the application layer defined in [1].

The column RTU500 series type shows the data types that have to be configured in RTUtil500.

RP570/71 Description Function code RTU500 series

type for type
RP570/71

IDM_P1 Indication message without status, priority 1 48 SPI/DPI

IDM_P2 Indication message without status, priority 2,3 50 SPI/DPI

IDS_P1 Indication message with status, priority 1 52 SPI/DPI

IDS_P2 Indication message with status, priorities 2,3 54 SPI/DPI

AVM_P1 Analog Value without status, priority 1 40 AMI

AVM_P2 Analog Value without status, priorities 2,3 42 AMI

AVS_P1 Analog Value with status, priority 1 44 AMI

AVS_P2 Analog Value with status, priorities 2,3 46 AMI

DVM_P1 Digital value message, priority 1 56 DMI8/16, STI,

BSI8/16

DVM_P2 Digital value message, priority 2,3 58 DMI8/16, STI,

BSI8/16

PCM_P1 Pulse counter message, priority 1 60 ITI

PCM_P2 Pulse counter message, priorities 2,3 62 ITI

PCT_P1 Pulse counter telegram, priority 1 78 ITI

PCT_P2 Pulse counter telegram, priorities 2,3 80 ITI

ERMI Event recording message for indications 64 SPI/DPI

TSTA Terminal status 10 SEV

TEV Terminal event 14 SEV

CBR Check back response 20 SCO, DCO (Select)

EXR Executed response 6 -

EXRR Executed response, RTU restarted 4 -

NXR Not executed response. 8 -

ACK Acknowledge 26 -

NACK Negative acknowledge 30 -

TDR Transparent Data in response direction 28 TDC

CCR1 Cycle complete response prio 1 0 -

CCR2 Cycle complete response prio 2 2 -

Table 2: RP570/71 message types in monitoring direction

ABB AG - 1KGT 150 518 V013 1 | 4-1

Application Layer RTU500 series Remote Terminal Unit

RP570/71 Description Function code RTU500 series

type type

IXC Immediate execute command. 19 SCO, RCO, DCO

CBCX Check back before execute command 11 SCO, DCO

EXC Execute command 27 SCO, DCO

IHC Inhibit command 7 SCO, DCO

SPM Setpoint message 3 ASO, DSO8/16

GOM General output 23 BSO1/2/8/16

SCI Status check instruction 31 -

TSI Time sync instruction 25 -

FCOM Function command 13 -

TDC Transparent Data in command direction 29 TDC

RA Request A 1 -

RB Request B 17 -

RX Request X (for flow control) 9 -

RSEQ Reset sequence number 15 -

Used for redundant communication lines

Table 3: RP570/71 message types in command direction

4-2 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Parameters and addressing
Monitoring Direction

5 Parameters and addressing

5.1 Monitoring Direction

Selection according to ([1],3). Addresses can be configured as shown in the following table:

Parameter name Default Parameter location

In use Enabled Data point - line T570/71

If enabled, the data point is transmitted to the host communication interface.

This setting refers to data in monitoring and command direction.

Router RTU number 1 Data point - line T570/71

Value range: 1 ... 255

1 octet

Process RTU number 1 Data point - line T570/71

Value range: 1 ... 255

1 octet

Block number 1 Data point - line T570/71

Value range: 1 ... 255

1 octet

Bit number 1 Data point - line T570/71

Value range: 1 ... 16 (SPI and DPI)

ADVICE

Restrictions for Router/Process RTU number:

Router/Process RTU number = 0 is used for broadcast messages from a control system to the
RTUs. RTU500 series will not answer.

5.2 Command Direction

Selection according to ([1],3). Addresses can be configured as shown in the following table:

ABB AG - 1KGT 150 518 V013 1 | 5-1

Parameters and addressing RTU500 series Remote Terminal Unit
Command Direction

Parameter name Default Parameter location

In use Enabled Data point - line T570/71

If enabled, the data point is transmitted to the host communication interface.

This setting refers to data in monitoring and command direction.

Router RTU number 1 Data point - line T570/71

Value range: 1 ... 255

1 octet

Process RTU number 1 Data point - line T570/71

Value range: 1 ... 255

1 octet

Block number 1 Data point - line T570/71

Value range: 1 ... 255

1 octet

Bit number 1 Data point - line T570/71

Value range: 1 ... 255 (RCO, ASO, BSO and DSO)

Value range: 1 ... 2047 (SCO and DCO)

ADVICE

Restrictions for Router/Process RTU number:

Router/Process RTU number = 0 is used for broadcast messages from a control system to the
RTUs. RTU500 series will not answer.

5-2 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Data types - monitoring direction
AMI – Analog Measured Information

6 Data types - monitoring direction

6.1 AMI – Analog Measured Information

Analog process information indicated by 16 bit used as a measured value from analog inputs in
normalized or scaled format.

6.1.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

<AVM> without time stamp, without AMI

status

<AVS> without time stamp, with AMI

status1

Table 4: AMI - Supported data types

1 Is sent if status has changed or in case of a status check.

6.1.2 Additional information

None

6.1.3 Conversion of value

Type RTU500 series internal communication Protocol-specific

AVM Range min. -100 % -2000

... ...

Range max. +100 % +2000

ERMFD Range min. -3.4 x 10e38 -3.4 x 10e38

... ...

Range max. +3.4 x 10e38 +3.4 x 10e38

Table 5: Conversion of value

6.1.4 Conversion of quality descriptors

RTU500 series internal communication Protocol specific

BL Blocked Faulty or blocked value

SB Substituted -

NT Not Topical -

IV Invalid Faulty or blocked value

TIV Time invalid T Quality code > 0 (ERMFD only)

ABB AG - 1KGT 150 518 V013 1 | 6-1

Data types - monitoring direction RTU500 series Remote Terminal Unit
BSI – Bit String Information

6.2 BSI – Bit String Information

Binary process information is indicated by 8, 16 or 32 bit.

6.2.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

<DVM> without time stamp, with BSI

status
16 bit transparent data

Table 6: BSI - Supported data types

6.2.2 Additional information

None

6.2.3 Conversion of value

RTU500 series internal communication Protocol-specific

Range min. 0 0

... ...

Range max. BSI8: bit mask of 8 bits; 255

range ... 255

BSI16: bit mask of 16 bits; 65535

range ... 65535

6.2.4 Conversion of quality descriptors

RTU500 series internal communication Protocol-specific

BL Blocked Faulty or blocked value

SB Substituted -

NT Not Topical -

IV Invalid Faulty or blocked value

6.3 DMI – Digital Measured Information

Binary process information indicated by 8 or 16 bit is used as a measured value from digital inputs
in normalized format.

6-2 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Data types - monitoring direction
DMI – Digital Measured Information

6.3.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

<DVM> without time stamp, with DMI

status
16 bit 2’s complement signed data

Table 7: DMI - Supported data types

6.3.2 Additional information

None

6.3.3 Conversion of value

RTU500 series internal communication Protocol-specific

Range min. -100% -32768

... ...

Range max. +100% +32767

6.3.4 Conversion of quality descriptors

RTU500 series internal communication Protocol-specific

OV Over flow -

BL Blocked Faulty or blocked value

SB Substituted -

NT Not Topical -

IV Invalid Faulty or blocked value

6.4 DPI – Double Point Information

Binary process information is indicated by two bits.

6.4.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

<IDM> without time stamp, without DPI Transmit with timestamp Protocol ad-
status dress and para-
This is a block (containing 16 bits) meters
of indications.

Table 8: DPI - Supported data types

ABB AG - 1KGT 150 518 V013 1 | 6-3

Data types - monitoring direction RTU500 series Remote Terminal Unit
DPI – Double Point Information

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

<IDS> without timestamp, with sta- DPI Transmit with timestamp Protocol ad-
tus dress and para-
meters

<ERMI> with time stamp, with time DPI Transmit with timestamp Protocol ad-
status dress and para-
meters

Table 8: DPI - Supported data types

6.4.2 Additional information

None

6.4.3 Conversion of values

RTU internal value RP570/71

intermediate 00

off 10

on 01

indeterminate 11

Table 9: DPI – Conversion of values

6.4.4 Conversion of quality descriptors

RTU500 series internal communication Protocol-specific

BL Blocked Status flag <IDS>

SB Substituted -

NT Not Topical -

IV Invalid Status flag of <IDS>

6.5 EPI – Protection Event Information

Binary process information is indicated by two bits and relative timetag (used by protection relays).

6.5.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

<ERMIR> with relative time, with EPI Transmit with timestamp Protocol ad-
time status dress and para-
meters

Table 10: EPI - Supported data types

6-4 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Data types - monitoring direction
EPI – Protection Event Information

6.5.2 Additional information

None

6.5.3 Conversion of value

Convert EPI to Single Indication:

RTU500 series internal communication Protocol-specific

off 10

on 01

Convert EPI to Double Indication:

RTU500 series internal communication Protocol-specific

Intermediate 00

Off 10

On 01

Indeterminate 11

6.5.4 Conversion of quality descriptors

RTU500 series internal communication Protocol specific

BL Blocked -

SB Substituted -

NT Not Topical -

IV Invalid -

6.6 ITI – Integrated Totals Information

Binary process information is indicated by 32 bits as a count value.

6.6.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

<PCM>, <PCT> with time stamp ITI Send PCT telegram1 Protocol ad-
dress and para-
meters

Table 11: ITI- Supported data types

1 If parameter is enabled, ITI will be sent in data type PCT.

ABB AG - 1KGT 150 518 V013 1 | 6-5

Data types - monitoring direction RTU500 series Remote Terminal Unit
ITI – Integrated Totals Information

6.6.2 Additional information

None

6.6.3 Conversion of value

RTU500 series internal communication Protocol-specific

Range min. -2147483648 -2147483648

... ...

Range max. 2147483647 2147483647

6.6.4 Conversion of quality descriptors

RTU500 series internal communication Protocol specific

SEQ Sequence number -

CY Carry -

CA Adjusted Restarted counter (RC)

IV Invalid Invalid or blocked (IV)

6.6.5 Additional Parameter in RP570/71 protocol

RTU500 series internal communication Protocol-specific

CT Changed time According to TSTA1#9

IT Invalid time According to TSTA1#9

LS Local storage =1

IR Intermediate reading According to PDP parameter

EPR End of period reading According to PDP parameter

6.7 MFI – Measured Float Information

32 bit analog process information is used as a measured value in float format.

6.7.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

<AVM> without time stamp, without MFI Transmit with timestamp 1 Protocol ad-
status dress and para-
meters

Table 12: MFI - Supported data types

6-6 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Data types - monitoring direction
MFI – Measured Float Information

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

<ERMFD> with time stamp MFI Transmit with timestamp1 Protocol ad-
dress and para-
meters

Table 12: MFI - Supported data types

1 If parameter is enabled, MFI is transmitted as ERMFD. If transmit with timestamp is disabled, MFI is trans-
mitted as AVM message.

6.7.2 Additional information

None

6.7.3 Conversion of value

Type RTU500 series internal communication Protocol-specific

AVM Range min. -100 % -2000

... ...

Range max. +100 % +2000

ERMFD Range min. -3.4 x 10e38 -3.4 x 10e38

... ...

Range max. +3.4 x 10e38 +3.4 x 10e38

Table 13: Conversion of value

6.7.4 Conversion of quality descriptors

RTU500 series internal communication Protocol specific

OV Overflow Value: <-2048 or >2047

BL Blocked Faulty or blocked value

SB Substituted -

NT Not Topical -

IV Invalid Faulty or blocked value

TIV Time invalid T Quality code > 0 (ERMFD only)

6.8 SPI – Single Point Information

Binary process information is indicated by one bit.

ABB AG - 1KGT 150 518 V013 1 | 6-7

Data types - monitoring direction RTU500 series Remote Terminal Unit
SPI – Single Point Information

6.8.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

<IDM> without time stamp, without SPI Transmit with timestamp Protocol ad-
status dress and para-
This is a block (containing 16 bits) meters
of indications.

<IDS> without timestamp, with sta- SPI Transmit with timestamp Protocol ad-
tus dress and para-
meters

<ERMI> with time stamp, with time SPI Transmit with timestamp Protocol ad-
status dress and para-
meters

Table 14: SPI - Supported data types

6.8.2 Additional information

None

6.8.3 Conversion of values

RTU internal value RP570/71

off 0

on 1

Table 15: SPI - Conversion of values

6.8.4 Conversion of quality descriptors

RTU500 series internal communication Protocol-specific

BL Blocked Status flag of <IDS>

SB Substituted -

NT Not Topical -

IV Invalid Status flag of <IDS>

6.9 STI – Step Position Information

Binary process information is indicated by 8 bits.

6-8 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Data types - monitoring direction
STI – Step Position Information

6.9.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

<DVM> without time stamp, with STI

status

Table 16: STI - Supported data types

6.9.2 Additional information

None

6.9.3 Conversion of values

Range RTU internal value RP570/71

Range min. -63 -63

... ...

Range max. +63 +63

Table 17: STI - Conversion of values

6.9.4 Conversion of quality descriptors

RTU500 series internal communication Protocol-specific

OV Overflow Faulty or blocked value

BL Blocked Faulty or blocked value

SB Substituted -

NT Not Topical -

IV Invalid Faulty or blocked value

T Transient Bit -

ABB AG - 1KGT 150 518 V013 1 | 6-9

Data types - monitoring direction RTU500 series Remote Terminal Unit
STI – Step Position Information

6-10 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Data types - controlling direction
ASO – Analog Setpoint Output

7 Data types - controlling direction

7.1 ASO – Analog Setpoint Output

Analog process command (16 bit signed number)

7.1.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

<SPM> ASO Source function code Protocol ad-

Representation: 12 bit 2’ comple- dress and para-
ment, sign extended to 16 bits meters
<GOM>
General Output Message

Table 18: ASO - Supported data types

7.1.2 Command authority

See also parameter Interlock with local control authority.

(Table "Host Parameters" in chapter Physical Layer.)

7.1.3 FTAB download

Parameter name Default Parameter location

FTAB download Disabled Line parameter

Enabled/Disabled

If disabled:

RTU rejects, FTAB download procedure

7.1.4 Additional information

The analog setpoint output is a persistent output. A strobe signal can be assigned.

7.1.5 Conversion of value

RTU500 series internal communication Protocol-specific

Range min. -100% -2000

... ...

Range max. +100% +2000

ABB AG - 1KGT 150 518 V013 1 | 7-1

Data types - controlling direction RTU500 series Remote Terminal Unit
BSO – Bit String Output

7.2 BSO – Bit String Output

Binary process command (1, 2, 8, 16, 32 bit unsigned number)

7.2.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

<GOM> BSO1, BSO2,

BSO8, BSO16
BSO32 is not
supported in
RP570/71

Table 19: BSO - Supported data types

7.2.2 Command authority

See also parameter Interlock with local control authority.

(Table "Host Parameters" in chapter Physical Layer.)

7.2.3 FTAB download

Parameter name Default Parameter location

FTAB download Disabled Line parameter

Enabled/Disabled

If disabled:

RTU rejects, FTAB download procedure

7.2.4 Additional information

Always a persistent output.

7.2.5 Conversion of value

RTU500 series internal communication Protocol-specific

Range min. 0 0

... ...

Range max. 65535 65535

7.3 DCO – Double Command Output

Binary process command (two bits)

7-2 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Data types - controlling direction
DCO – Double Command Output

7.3.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

CTYPE = 0 DCO
One step command: <IXC>
Two step command: <CBXC> /
<EXC> (<IHC>)

Table 20: DCO - Supported data types

7.3.2 Command authority

See also parameter Interlock with local control authority.

(Table "Host Parameters" in chapter Physical Layer.)

7.3.3 FTAB download

Parameter name Default Parameter location

FTAB download Disabled Line parameter

Enabled/Disabled

If disabled:

RTU rejects, FTAB download procedure

7.3.4 Additional information

None

7.3.5 Conversion of value

RTU500 series internal communication Protocol-specific

off 0

on 1

7.4 DSO – Digital Setpoint Output

Binary process command (8 or 16 bit signed number)

ABB AG - 1KGT 150 518 V013 1 | 7-3

Data types - controlling direction RTU500 series Remote Terminal Unit
DSO – Digital Setpoint Output

7.4.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

<SPM> DSO
Representation: 15 data bits

Table 21: DSO- Supported data types

7.4.2 Command authority

See also parameter Interlock with local control authority.

(Table "Host Parameters" in chapter Physical Layer.)

7.4.3 FTAB download

Parameter name Default Parameter location

FTAB download Disabled Line parameter

Enabled/Disabled

If disabled:

RTU rejects, FTAB download procedure

7.4.4 Additional information

The digital setpoint output is a pulsed output. A strobe signal can be assigned.

7.4.5 Conversion of values

RTU500 series internal communication Protocol-specific

Range min. -100% < 0 <Not allowed>

... ... <Not allowed>

0 0

... ... ...

Range max. +100% +32767

7.5 RCO – Regulation Command Output

Regulation step command (two bits)

7-4 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Data types - controlling direction
RCO – Regulation Command Output

7.5.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

CTYPE = 1 RCO
One step command: <IXC>

Table 22: RCO - Supported data types

7.5.2 Command authority

See also parameter Interlock with local control authority.

(Table "Host Parameters" in chapter Physical Layer.)

7.5.3 FTAB download

Parameter name Default Parameter location

FTAB download Disabled Line parameter

Enabled/Disabled

If disabled:

RTU rejects, FTAB download procedure

7.5.4 Additional information

Regulation commands are in principle retriggerable commands.

7.5.5 Conversion of value

RTU500 series internal communication Protocol-specific

Lower 0

Higher 1

7.5.6 Conversion of causes of transmission

RTU500 series inter- Protocol-specific
nal communication

deactivation <8> stop running immediately

Table 23: RCO – Conversion of causes of transmission

7.6 SCO – Single Command Output

Binary process command (one bit)

ABB AG - 1KGT 150 518 V013 1 | 7-5

Data types - controlling direction RTU500 series Remote Terminal Unit
SCO – Single Command Output

7.6.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

CTYPE = 0 SCO
One step command: <IXC>
Two step command: <CBXC> /
<EXC> (<IHC>)

Table 24: SCO - Supported data types

7.6.2 Command authority

See also parameter Interlock with local control authority.

(Table "Host Parameters" in chapter Physical Layer.)

7.6.3 FTAB download

Parameter name Default Parameter location

FTAB download Disabled Line parameter

Enabled/Disabled

If disabled:

RTU rejects, FTAB download procedure

7.6.4 Additional information

None

7.6.5 Conversion of values

RTU internal value RP570/71

off 0

on 1

Table 25: SCO - Conversion of values

7-6 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Transparent Data

8 Transparent Data
In automation systems may be required information that is not mapped to the RP570/71 protocol.
This information includes several device specific parameters etc. Transparent data messages are
used in the host communication interface, to transfer information to a subdevice interface with the
communication protocol SPABus.

With the ‘Transparent Data in Command Direction’ message (TDC) the Controlling Station is able to
request data and execute commands of a SPABus subdevice connected to a RTU500 series RTU.
Segmentation of the TDC message in not supported.

The SPABus subdevice collects the response, and the RP570/71 host interface sends this response
as ‘Transparent Data in Response Direction’ message (TDR) to the controlling station. The TDR
message from RTU may be segmented.

The first byte of the user data is the message class (7 = SPABus Data), the number of user data
bytes is limited to 127.

Sequence Number of the received TDC is not supported.

ABB AG - 1KGT 150 518 V013 1 | 8-1

Transparent Data RTU500 series Remote Terminal Unit

Figure 3: Telegram Sequence

8-2 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit File Transfer

9 File Transfer
Not supported

ABB AG - 1KGT 150 518 V013 1 | 9-1

File Transfer RTU500 series Remote Terminal Unit

9-2 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Internal Functions
Status check

10 Internal Functions

10.1 Status check

The status check includes TEV#24 (TEV#23 after RTU Restart), TSTA messages, indications, analog
measurements and digital measurements.

Pulse counters are not transmitted after a status check instruction. The status check instruction may
be addressed to the complete RTU data base (including all sub-RTUs) or to an individual Process
RTU (including the Router RTU itself).

10.1.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

<SCI>

Table 26: Status check - Supported data types

10.1.2 Values
None.

10.1.3 Command authority

None

10.1.4 Additional information

The status check for subordinated devices is also handled by the Router RTU.

10.2 Time synchronization

The RTU500 series supports different methods of time synchronization. It is also possible to syn-
chronize the RTU from the network control center, using the protocol RP570/71.

Every time master has its own priority. In case of a failure of the current time master, the next lower
prior time master is used for time synchronization. If the higher prior time master will be available
again, he will be used for synchronization.

ABB AG - 1KGT 150 518 V013 1 | 10-1

Internal Functions RTU500 series Remote Terminal Unit
Time synchronization

Parameter name Default Parameter location

Time Master Not used RTU parameter

10.2.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

<TSI>

Table 27: Time synchronization - Supported data types

10.2.2 Values
Complete time and date information in CP56Time2a format.

10.2.3 Command authority

None

10.2.4 Additional information

Time synchronization with broadcast address (=0) is supported by RTU500 series.

10.3 Cold start RTU

System command to reset the RTU.

10.3.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

FCOM

Table 28: Reset command - Supported data types

10.3.2 FCOM number

1.

10.3.3 Command authority

None

10-2 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Internal Functions
Cold start RTU

10.3.4 Additional information

If the reset command is sent to the Router RTU, it will not be acknowledged and will reset the Router.
If the command is sent to a subordinated device with protocol RP570/71, it will be routed through
the RTU to the subordinated device.

10.4 New Configuration for Loop Reversal Unit

FCOM #8 is used to reconfigure the loop reversal unit DSTC3002

The first INFO-Byte of the Function Command #8 is used to operate the Loop Reversal Unit as
follows:

Figure 4: First INFO-Byte of FCOM #8

10.4.1 Supported data types

RP570/71 RTU

Process data message Data type Parameter name Parameter

location

FCOM

Table 29: Reconfigure the loop reversal unit DSTC3002 - Supported data types

10.4.2 FCOM number

8.

10.4.3 Command authority

None

10.4.4 Additional information

INFO1.

10.5 FTAB loading

The RTU500 series supports the configuration commands from RTU500 series Release 10.1. FTABs
are used to configure process data points, their processing parameters and station parameters. The
different FTABs are identified by the function code for an FTAB message and within the FTAB TYPE.

ABB AG - 1KGT 150 518 V013 1 | 10-3

Internal Functions RTU500 series Remote Terminal Unit
FTAB loading

FTAB download is an optional feature, based on the configuration parameter, ‘FTAB download’.

10.5.1 Preconditions
The basic configuration must be generated with RTUtil500 and uploaded with the WEB server into
the RTU. The basic configuration includes the complete predefined network and hardware tree
without I/O boards. The signal tree will not be used. Furthermore, all communication interfaces must
be configured on the CMUs.

The basic configuration includes:

• The complete network tree of the project:

All host communication lines, communication addresses, transmission parameters and the inter-
face settings.

• The hardware tree of the RTU project:

With all cabinets, racks, CMUs, power supply units and the periphery bus configuration. The time
synchronization, CMU and line redundancy have to be defined too.

Lines and stations must be linked between hardware and network tree

The basic configuration contains no I/O boards and process data.

Configuration commands are accepted on all configured RP570/1 host communication interfaces.

10.5.2 Restrictions
Only host communication interfaces RP570/1 support the FTAB download. The FTAB rack address-
es from 0 to 6 are mapped to the RTU rack address 1 to 7. The RTU racks 1 to 7 must be con-
nected with the peripheries bus to the CPB of the CMU. The FTAB rack address 7 is mapped to
rack address 1. The peripheries bus of this rack must be connected to interface CPA of the CMU.
Configurations, which are downloaded with FTAB, can not be opened with RTUtil500. The primary
host function is not supported.

10.5.3 Supported configuration commands (FTAB)

Supported configuration commands (FTAB).

FTAB Type Description of the FTAB

FT$IND Basic Function Table, Indications

FT$AMV Basic Function Table, Analog Value

FT$DMV Basic Function Table, Digital Value

FT$PCV Basic Function Table, Pulse Counter

FT$CMD Basic Function Table, Commands

FT$REG Basic Function Table, Regulation Commands

FT$SPV Basic Function Table, Setpoint Values

FT$GOM Basic Function Table, General Output

FT$TERM Basic Function Table, Terminal Info

Table 30: Table of supported FTABs

10-4 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Internal Functions
FTAB loading

FTAB Type Description of the FTAB

FT$TERM$CMDS Extended Table Command Supervision

FT$TERM$MODEM Extended Table Modem Parameter

FT$TERM$IDENT Extended Table Terminal Identification

Table 30: Table of supported FTABs

10.5.4 Procedure
• Create the basic configuration and build the configuration files with RTUtil500.
• Load the configuration file with the WEB server into the RTU.
• Connect the RP570/1 hosts to the RTU.
• Restart the RTU.
• RTU500 series reports the database version to the connected hosts using TEV23/24.
• One of the connected Hosts should start the download procedure if the database version is dif-
ferent.
• RTU500 series generates a temporary configuration file from the actual configuration, if FCOM
18 is received. This file contains only the basic configuration. Existent I/O boards will be re-
moved.
• Parameters extracted from the received FTABs are converted to RTU configuration parameters
and written into the temporary configuration file.
• By receiving a “database version” (FCOM 19) the temporary configuration file replaces the con-
figuration file of RTU in all CMUs. The old configuration files will be deleted. The new database
version used by TEV23/24 is saved in the configuration file.

10.6 System Events

RTU internal system events are sent as terminal status messages or terminal event messages to
the RTU´s RP570/71 host interface.

The following table shows which system events are sent as Terminal Status messages (TSTA) resp.
Terminal Event messages (TEV).

Description of system event SEV Message Ident Status

No. type Bit No.

At least one indication is faulty #016 TSTA 1 0

At least one analog value is faulty #017 TSTA 1 1

At least one digital value is faulty #018 TSTA 1 2

At least one pulse counter is faulty #019 TSTA 1 3

At least one command is faulty #020 TSTA 1 4

At least one setpoint is faulty #021 TSTA 1 5

At least one digital output is faulty #022 TSTA 1 6

RTU is faulty #023 TSTA 1 7

RTU is active #024 TSTA 1 8

RTU is synchronized #025 TSTA 1 9

External clock is inoperable #026 TSTA 1 10

Table 31: System events and message types

ABB AG - 1KGT 150 518 V013 1 | 10-5

Internal Functions RTU500 series Remote Terminal Unit
System Commands

Description of system event SEV Message Ident Status

No. type Bit No.

Local printer is offline #027 TSTA 1 11

Backup battery low (RTU560E only) #029 TSTA 1 13

AC power supply failed (RTU560 only) #030 TSTA 1 14

Local user program (LAF) #1 is active #046 TSTA 2 14

Subordinate RTU is inoperable1 #048 TSTA 3 0

Command supervision circuit x is faulty, #064-079 TSTA 5 x-1

x = 1 … 16

Host x is offline, x = 1 … 32 #101-103 TSTA 3 x+1

At least one intermediate pulse counter value lost due to queue #133-148 TEV 21 -
overflow (own queue only)

At least one end of period pulse counter value lost due to #133-148 TEV 22 -
queue overflow (own queue only)

RTU restarted - TEV 23 -

RTU operable - TEV 24 -

Table 31: System events and message types

1 This message is generated by the subdevice communication interface. The RP571 host communication
interface transmits this state with the addresses of the concerned device.
2 Because of restrictions in the protocol RP570/71, only the states of host 1 to 3 are reported.

10.7 System Commands

System commands are not supported.

10-6 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Interoperability List
Supported and selectable parameters

11 Interoperability List

11.1 Supported and selectable parameters

In this document parameter settings and selections of the RP570/71 protocol that are supported
by RTU500 series are marked by squares with a tick ✓

Functions and parameters with unfilled squares are not supported by RTU500 series!

11.2 Network configuration

(network-specific parameter)

✓ Point-to-point ✓ Multipoint-party line

✓ Multiple point-to-point ✓ Multipoint-star

11.3 Physical Layer

(network-specific parameters)

11.3.1 Transmission speed (monitor direction)

Unbalanced interchange Unbalanced interchange Balanced interchange
Circuit V.24/V.28 Circuit V.24/V.28 Circuit X.24/X.27
Standard Recommended if >1200 bit/s
✓ 100 bit/s ✓ 2400 bit/s ✓ 2400 bit/s
✓ 200 bit/s ✓ 4800 bit/s ✓ 4800 bit/s
✓ 300 bit/s ✓ 9600 bit/s ✓ 9600 bit/s
✓ 600 bit/s ✓ 19200 bit/s ✓ 19200 bit/s
✓ 1200 bit/s ✓ 38400 bit/s
□ 56000 bit/s
□ 64000 bit/s

11.3.2 Transmission speed (control direction)

Unbalanced interchange Unbalanced interchange Balanced interchange
Circuit V.24/V.28 Circuit V.24/V.28 Circuit X.24/X.27
Standard Recommended if >1200 bit/s
✓ 100 bit/s ✓ 2400 bit/s ✓ 2400 bit/s
✓ 200 bit/s ✓ 4800 bit/s ✓ 4800 bit/s
✓ 300 bit/s ✓ 9600 bit/s ✓ 9600 bit/s
✓ 600 bit/s ✓ 19200 bit/s ✓ 19200 bit/s
✓ 1200 bit/s ✓ 38400 bit/s
□ 56000 bit/s
□ 64000 bit/s

11.4 Link Layer

Fixed and variable frame lengths are used in RP570/71.

ABB AG - 1KGT 150 518 V013 1 | 11-1

Interoperability List RTU500 series Remote Terminal Unit
Application Layer

11.5 Application Layer

(system-specific parameter)

11.5.1 Process information in monitor direction

✓ Indication message without status IDM
✓ Indication message with status IDS
✓ Analog value message without status AVM
✓ Analog value message with status AVS
✓ Pulse counter message PCM
✓ Pulse counter telegram PCT
✓ Digital value message DVM
□ Digital value long message DVL
✓ Event recording message for indications ERMI
✓ Event recording message for indications with relative time ERMIR
□ Event recording message for analog measured value ERMA
□ Event recording message for digital measured value ERMD
✓ Event recording message fault distance ERMFD
□ Event recording message for commands ERMC
□ Post mortem review message, initiating event PMRI
□ Post mortem review message, values PMRV
✓ Transparent data in response direction TDR
✓ Terminal status message TSTA
□ Terminal status message, satellites TSTS
✓ Terminal event message TEV
□ Terminal event message, satellites TEVS
□ Memory contents message MCM
□ System message telegram SYSM
✓ Cycle complete response, priority level 1 CCR1
✓ Cycle complete response, priority level 2 CCR2
✓ Executed response EXR
✓ Executed response, RTU restarted EXRR
✓ Not executed response NXR
✓ Acknowledge ACK
✓ Negative acknowledge NACK

11.5.2 Process information in control direction

✓ Request A RA
✓ Request B RB
✓ Request X (used for flow control) RX
✓ Immediate execute command IXC
✓ Check back before execute command CBXC
✓ Execute command EXC
✓ Inhibit command IHC
✓ Setpoint message SPM
✓ General output message GOM
✓ Status check instruction SCI
✓ Reset sequence number RSEQ
✓ Function command FCOM
✓ Function table FTAB
✓ Transparent date in command direction TDC

11-2 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Interoperability List
Basic Application Functions

✓ Time sync instruction TSI

11.6 Basic Application Functions

Clock synchronization

(station-specific parameter)

✓ Clock synchronization
Command transmission

(object-specific parameter)

✓ Direct command transmission

✓ Check back before execute

ABB AG - 1KGT 150 518 V013 1 | 11-3

Interoperability List RTU500 series Remote Terminal Unit
Basic Application Functions

11-4 | 1KGT 150 518 V013 1 - ABB AG

RTU500 series Remote Terminal Unit Glossary

12 Glossary
AMI Analog Measured value Input

ASO Analog Setpoint command Output

BSI Bit String Input

BSO Bit String Output

CMU Communication and Data Processing Unit

DCO Double Command Output

DMI Digital Measured value Input (8, 16 bit)

DPI Double Point Input

DSO Digital Setpoint command Output (8, 16 bit)

EPI Event of Protection equipment Input (1 bit)

IED Intelligent Electronic Device

ITI Integrated Totals Input

MFI Analog Measured value Floating Input

MS Microsoft

PDP Process Data Processing

RCO Regulation step Command Output

RTU Remote Terminal Unit

SCI Sub-Device Communication Interface

SCO Single Command Output

SEV System Event

SPI Single Point Input or Single point information

STI Step position Input

TDC Transparent Data Communication

TSI Time Synch Input

ABB AG - 1KGT 150 518 V013 1 | 12-1

  RTU500 series Remote Terminal Unit

Note:

The specifications, data, design or other information contained in this document (the “Brochure”)
- together: the “Information” - shall only be for information purposes and shall in no respect be
binding. The Brochure does not claim to be exhaustive. Technical data in the Information are only
approximate figures. We reserve the right at any time to make technical changes or modify the
contents of this document without prior notice. The user shall be solely responsible for the use of
any application example or information described within this document. The described examples
and solutions are examples only and do not represent any comprehensive or complete solution. The
user shall determine at its sole discretion, or as the case may be, customize, program or add value
to the ABB products including software by creating solutions for the end customer and to assess
whether and to what extent the products are suitable and need to be adjusted or customized.

This product is designed to be connected to and to communicate information and data via a network
interface. It is the users sole responsibility to provide and continuously ensure a secure connection
between the product and users or end customers network or any other network (as the case may
be). The user shall establish and maintain any appropriate measures (such as but not limited to
the installation of firewalls, application of authentication measures, encryption of data, installation of
anti-virus programs, etc) to protect the product, the network, its system and the interface against any
kind of security breaches, unauthorized access, interference, intrusion, leakage and/or theft of data
or information. ABB AG is not liable for any damages and/or losses related to such security breaches,
any unauthorized access, interference, intrusion, leakage and/or theft of data or information.

ABB AG shall be under no warranty whatsoever whether express or implied and assumes no re-
sponsibility for the information contained in this document or for any errors that may appear in this
document. ABB AG's liability under or in connection with this Brochure or the files included within
the Brochure, irrespective of the legal ground towards any person or entity, to which the Brochure
has been made available, in view of any damages including costs or losses shall be excluded. In
particular ABB AG shall in no event be liable for any indirect, consequential or special damages,
such as – but not limited to – loss of profit, loss of production, loss of revenue, loss of data, loss
of use, loss of earnings, cost of capital or cost connected with an interruption of business or oper-
ation, third party claims. The exclusion of liability shall not apply in the case of intention or gross
negligence. The present declaration shall be governed by and construed in accordance with the
laws of Switzerland under exclusion of its conflict of laws rules and of the Vienna Convention on the
International Sale of Goods (CISG).

ABB AG reserves all rights in particular copyrights and other intellectual property rights. Any repro-
duction, disclosure to third parties or utilization of its contents - in whole or in part - is not permitted
without the prior written consent of ABB AG.

© Copyright ABB 2017

All rights reserved

2 | 1KGT 150 518 V013 1 - ABB AG