Precise Line Mod.

DAT 400 Series

Digital / Analog Transmitters

Installation & Operating

Manual
(version 1.4)

Starting from the s/n 2007/12629 the DAT-400 units are equipped with a USB port.

1
 Technical Specifications

Power Requirements

Input Voltage 24 Vdc + 15%

Power Consumption 5 Watts
Isolation Class II
Category Category II

Environmental

Operating Temperature + 14 to + 122ºF

104ºF (-10 to +50ºC)
+40ºC)
Storage Temperature - 4 to + 158ºF
122ºF (-20 to +70ºC)
+50ºC)
Relative Humidity 85% non-condensing

Display

Type 6-digit red LED, 7 segment 0.55” high

Status LED’s (4) Red LED’s
Keyboard (4) Keys (tactile feedback)

Performance

Excitation Voltage 5 volts fixed, short circuit proof

Load Current 85 mA (six 350Ω load cells)
Conversion Rate 50 updates / second (no filtering)
Resolution 60,000 counts
Sensitivity 0.02 uV / count
Linearity < 0.01% of full scale
Temperature Creep < 0.001% of FS / ºC
A/D Converter 24 bits
Signal Input Range - 0.5 mV/V to + 3.5 mV/V (- 3.9 mV/V to + 3.9 mV/V optional)
Filter 0.1 Hz to 25 Hz selectable
Increment Size x1, x2, x5, x10, x20, x50
Decimal Point 0.0, 0.00, 0.000
Calibration Methods Computer interface or via front panel

Analog Output (Isolated)

Type 16 bit D/A conversion

Voltage 0-10 Vdc (10KΩ min load)
Current 4-20 mA (300Ω max load)
Linearity < 0.012% of full scale
Temperature Creep < 0.001% of FS / ºC

Inputs & Outputs

(2) Logic Inputs Opto-isolated, 24 Vdc PNP

(requires ext. power supply)
(2) Logic Outputs Solid-state relays, (maximum
load 24 Vdc / 100 mA each)

Serial Output RS-232, RS-422 or RS-485. USB port available from s/n 2007/12629

Maximum Cable Length 50 feet RS-232, 3200 feet for RS-422 and RS-485

Standard Protocols ASCII, Modbus RTU, Printer

Baud Rate 2400, 9600, 19200, 38400, or 115200 selectable

Enclosure

Overall Dimensions 4.17” x 3.54” x 2.28” (L x H x D)

Mounting DIN Rail
Enclosure ABS Plastic
Protection (front) IP20
Weight 8 Ounces
Wiring Connections Terminal blocks (pitch = 0.196”) Specifications are subject to change without notice

2
 Installation

Mounting Environmental Considerations

Install the instrument in a location where it will Heavy electrical equipment should not be
not be subjected to excessive heat, humidity or installed close to the weighing equipment.
vibration. For best results, avoid direct sunlight
on the front of the instrument. The unit should Excessive vibration will affect the accuracy of
be installed at eye level so as to allow viewing the weigh system and depending on the severity
the display and access to the front panel keys. can cause damage to electrical and electronic
components.
Cable Types and sizes
The atmosphere should be dust free and not
Use a 6 x 0.5 mm2 shielded cable for the load contain any corrosive gasses or materials which
cell/s connection. Use a 3 x 0.34 mm2 shielded could adversely affect the equipment.
cable for the RS-232 connection, and a 2 x 0.34
mm2 shielded cable for the RS-485 connection. Hazardous areas

Power and Wiring Considerations If the weighing system will be installed in a

hazardous area, please refer to the drawing
The instrument is powered from an external 24 shown on page 48.
Vdc source. The instrument can be operated
from a computer, therefore, a “clean” power NOTES:
source is required for reliable operation.
WELDING on or in the vicinity of the equipment
The incoming power should come from a source is strictly prohibited.
that is isolated from other process equipment.
STATIC loads, caused by thunderstorms, must
Cables carrying primary and switched power be prevented from developing by using reliable
should be routed away from load cell and other lightning conductors.
signal cables to avoid electrical interference.
ENSURE that the cooling of the equipment is
Relays, motor starters and other inductive not obstructed.
devices connected to the equipment must have
reliable and effective arc suppression.

Always connect the shield lead where indicated

on the drawing, and on one end only.

High voltage devices such as megohmmeters,

etc. should never be used to check the wiring
connections.

Plastic insulating tape should not be used on

load cell connections.

3
Introduction Operating Mode (cont’d)
This manual provides general information on The “O” key is used to zero the unit in Gross
the installation, configuration, calibration, and mode, tare the unit in Net mode, and reset the
operation of the Precise400 Series Digital / value to zero in Peak Hold mode.
Analog Transmitters. There are two models
The “PRG” key is used to send the data to the
within this series, the Model 400 which features RS-232 serial port for use with a computer.
a four-button keyboard, 6-digit Red LED display,
and four status LED’s. The Model 450 is a blind
unit which can only be configured and calibrated Front panel key functions - Setup Mode
remotely via the serial port. Both models are
packaged in ABS Plastic DIN-Rail mounted In setup mode three of the front panel keys are
enclosures. used as directional keys to scroll through the
various menus. A label on the lower half of each
All units include the following features: key identifies the direction provided by the key.
 Drives up to six 350 ohm load cells
 Supports 4 and 6 wire connections The “SET” and “FUN” keys are used to navigate
 RS-232 or RS-422/RS-485 outputs through the main menu and sub-menus. They
 USB port (from s/n 2007/12629) are also used to increment or decrement the
 (2) Logic inputs numerical value of a selected digit.
 (2) Logic outputs (setpoints)
The “O” key is used to move through certain
 Isolated analog output 4/20mA, 0-5 Vdc
sub-menu parameters, or to select a specific
or 0-10Vdc output utilizing a 16 bit DAC
digit when numerical values are displayed. It is
also used to return to the main menu from any
The Precise 400 Series Transmitters have of the sub-menus.
three different modes of operation:
The “PRG” key switches the unit to the “Basic
Operating mode Configuration” mode. It is also used to enter the
In this mode the unit displays gross weight, net sub-menus, and store parameter changes.
weight, or peak force readings as required.
The “PRG” key when used in conjunction with
Setup mode the “SET” key switches the unit to the “Complete
This mode is used for configuration and Configuration” mode. It is also used to enter the
calibration of the unit. sub-menus, and store parameter changes.

Test mode Status LED’s (Model 400 only)

The test mode enables you to test the inputs, There are four status LED’s on the front of the
outputs, and analog output. unit, one for Motion, one for Net mode, and one
for each of the outputs.
Front panel key functions - Operating Mode
(Model 400)
Enabling/Disabling front panel keys.
The “SET” key enables you to enter values for
Setpoints 1 and 2. Press the “SET” key, Set 1 In order to prevent any access to the instrument
appears on the display. Press the “PRG” key to by non-authorized personnel, a procedure to
view the current value. To change the current lock the front panel keys is also available.
value, press the “O” key to select a digit, then Each key can be locked individually.
use the “UP” or “DOWN” keys to increment or The 1/0 selection establish the lock/unlock
decrement the value. condition for each single key.
Repeat this procedure for the remaining digits, See page 6 for more details.
then press the “PRG” key to enter the new
value. To change the value for Setpoint 2, press Enabling the “blind” function
the “SET” key again and repeat the above This function allows to disable the visualization
procedure or press the “O” key to exit. of the display. A dash running counterclockwise
The “FUN” key is used to switch the unit from on the display’s perimeter is displayed instead of
Gross mode to Net mode, or Peak Hold mode. the weight value.
To switch to Peak Hold mode, press and hold See page 6 for more details.
the “FUN” key until a ‘P’ appears on the display.

4
 Main Power Connections Logic Input Connections (cont’d)
Use terminal 8 for the (+) input, and terminal 9 Input (2) functions as a “send data” command,
for the (-) input. The supply voltage must be closing the input causes the weight data to be
24 Vdc + 15%. The external power supply must sent to the RS-232 serial port.
have a minimum rating of 5 watts.
Logic Output Connections
Transducer/s Connections Use terminal 1 for Output (1) and terminal 2 for
Attach cable from transducer/s to transmitter Output (2). Terminal 3 is the common for both
(terminals 13 through 18). If using a 4-conductor outputs. The outputs utilize solid-state relays
cable, (no remote sensing) jumpers must be with a maximum load rating of 24 Vdc @ 100mA
installed between the + Excitation and + Sense
leads (terminals 14 to 15) and between Analog Output Connections
the - Excitation and - Sense leads (terminals 13 Use terminal 10 for the 4/20mA output (300 Ohm
to 16) as shown below in Figure 1. load max), or terminal 11 for a 0 to 5 Vdc or 0 to
10 Vdc output (10K Ohm load max). Terminal
Logic Input Connections 12 is used as the common for either output.
Use terminal 4 for Input (1), and terminal 5 for
Input (2). Terminal 6 is the common for both Serial Output Connections
inputs. These are powered inputs, which require The transmitters serial port supports RS-232 or
an input voltage of 24 Vdc to activate them. See RS-422/RS-485 or USB communications. Serial
Figure 1 for additional information. parameter selections can be found on page 19.
Input (1) is used to zero the unit in Gross mode, A detailed description of the serial data formats
tare the unit in Net mode, and reset the peak is provided on pages 21 through 25.
value when operating in Peak Hold mode. Wiring connections are shown on pages 26
through 27.
Common

Output 2

Output 1

Figure 1
1

USB port (under plastic cover)

Precise
Ext. power supply
for Logic Inputs

DAT
400
(24 Vdc)

Input 1
1
2
3
4

Input 2
5

SET

Common
6

Not used
7
SUPPLY
POWER

+24 Vdc
8
24 Vdc

0 Vdc
9

FUN

Current Out Txd

(20m max.)
10 11 12 13 14 15 16 17 18

27 26 25 24 23 22 21 20 19
Analog
Output

RS232

Voltage Out Rxd

Common Gnd
- Exc
O

Not used
+ Exc Gnd
+ Sense + Tx
(1000m max.)
32 unit max.
RS422/485

- Sense - Tx
PRG

- Sig + Rx
+ Sig - Rx
LOAD
CELL

5
When no programming procedures are in progress, the display shows the weight value.
In some particular conditions the following MESSAGES are displayed:

The weight displayed by the instrument is more than 9 divisions over the
“Live” weight value (see “NET” parameter, page 13)

The load cells input signal is lower than - 0,5 (-3,9) mV/V.
O-L The load cells input signal is higher than +3,5 (+3,9) mV/V.
The load cell input signal is missing
The values in brackets refer to the instruments having load cells input signal range from - 3,9 to + 3,9 mV/V (optional)

The “Blind” function has been enabled

Locking the front panel keys and enabling the “blind” function

In order to prevent any access to the instrument by non-authorized personnel, a procedure to lock the front
panel keys is available. Each key can be locked individually.
The 1/0 selection establish the lock/unlock condition for each single key.
The “blind” function allows to disable the visualization of the display. A dash running counterclockwise on the
display’s perimeter is displayed instead of the weight value once the programmed time (01 to 99 sec.) expires.
When the instrument is in “blind” mode all its functions are active.

Press and hold the “PRG” and “O” keys. The “O” key must be pressed after the “PRG” key.
Release both keys when the message LOCK appears on the display.

(
( PRG ) + ( O (press and hold) Front panel keys

O PRG

(
( O LOCK ( PRG )
Perform the selection
0000 0/1 of the blinking digit

( PRG )
Move the blinking
O
digit to the right

(
( O BLIND ( PRG )

( PRG ) OFF
Default = OFF
( PRG ) ON

END

Time programming (01 to 99 secs.)

00 Default = 00

( PRG )
Perform the selection
0/1 of the blinking digit

Move the blinking

O
digit to the right

6
Configuration Methods Basic Configuration (cont’d)
The Precise 400 Series Digital / Analog To set one of the following parameters, CAPAC,
Transmitters can be configured by using the SENSIT, NET, DEAD L, DSPDIV, or ANALOG,
front panel keys (Model 400) to navigate through press the “PRG” key to view the default or
a series of menus, or by sending configuration previously selected value for that parameter.
and calibration data to the RS-232 port with To change the value, press the “O” key to select
INOVATIONan MS Windows based program a digit, then use the “UP” or “DOWN” keys to
included with the unit. INOVATIONsimplifies increment or decrement the value of the
the configuration and calibration procedure. selected digit. When the desired value appears
on the display, press the “PRG” key to store the
Configuration Procedures new value. Press either the “UP” or “DOWN”
keys to move to the next parameter.
There are two procedures available for setup of
the Precise400 Series Transmitters, “Basic The SIGNAL parameter enables you to view the
Configuration” or “Complete Configuration”. actual input signal from the transducer/s. Press
the “O” key to move to the next parameter.
The “Basic Configuration” procedure allows you
to change selective parameters, whereas, the The CALIBR parameter is used to calibrate the
“Complete Configuration” procedure allows you transmitter. The unit can be calibrated using
to change all of the parameters. either the data sheet or dead load procedure.
For example, if the transmitter requires The data sheet calibration procedure allows the
calibration only, the “Basic Configuration” transmitter to be calibrated without a transducer
procedure is recommended. simulator or test weights. This procedure is
based on the capacity and certified, full scale
The following pages provide a detailed mV/V output (sensitivity) of the transducer/s.
explanation of both configuration procedures.
To perform a data sheet calibration, enter the
Basic Configuration via the Front Panel total scale capacity, sensitivity, net weight, dead
load weight, and display resolution, then press
To perform a “Basic Configuration”, press and the “O” key. The display will indicate STORE ?,
hold the “PRG” key until the display shows press the “PRG” key to save the changes and
CAPAC. Use either the “UP” or “DOWN” keys to return to the operating mode.
navigate through the eight basic configuration
sub-menus shown below. See page 9 for a detailed explanation of the
calibration procedure using test weights.
Display Sub-menu Functions The ANALOG parameter is used to enter the
full scale weight value that you want the analog
CAPAC Total capacity of transducer/s output to represent. The default is net weight
value.
SENSIT Rated output of the transducer/s To exit from the setup procedure, press the “O”
key when any one of the following parameters
NET Net (live) weight value are displayed CAPAC, SENSIT, … ANALOG.
The display will indicate STORE ?, press the
DEAD L Dead load weight value “PRG” key to save the changes and return to
the operating mode.
DSPDIV Increment size (resolution)

SIGNAL Transducer/s input signal (view)

CALIBR Calibration procedure

ANALOG Full scale value for analog output

7
Basic Configuration Menu

( PRG ) (keep pressed)

Enter
(
( O CAPAC ( PRG ) total scale ( PRG )
capacity

Enter
(
( O SENSIT ( PRG ) transducer/s ( PRG )
sensitivity

Enter
(
( O NET ( PRG ) “LIVE” ( PRG )
weight value

Enter
(
( O DEAD L ( PRG ) “Dead Load” ( PRG )
weight value

Select display
(
( O DSPDIV ( PRG ) divisions ( PRG )
0.001 - 50

View input
( (
( O SIGNAL ( PRG ) signal value ( O
mV/V

See calib.
(
*
(
( O CALIBR ( PRG ) procedure on (
next page

Enter FS
(
( O ANALOG ( PRG ) value for ( PRG )
analog out

STORE ? ( PRG ) QUIT

Place the unit in “Basic Configuration” mode by then use the “UP” or “DOWN” keys to increment
pressing and holding the “PRG” key until the or decrement the value of the selected digit.
display shows CAPAC. Use either the “UP” or Press the “PRG” key to enter the new value,
“DOWN” keys to scroll through the eight basic then press either the “UP” or “DOWN” keys to
configuration menus shown above. To set one move to the next parameter. To exit the setup
of the following parameters, CAPAC, SENSIT, procedure, press the “O” key when any one of
NET, DEAD L, DSPDIV, or ANALOG, press the the sub-menu parameters are displayed. The
“PRG” key to view the default or previously display will indicate STORE ?, press the “PRG”
selected value for that parameter. To change key to save the changes and return to the
the value, press the “O” key to select a digit, operating mode.

8
Basic Configuration Menu (cont’d)

NOTE: In order to ensure greater stability during the calibration procedure, the digital filter increases
to the maximum value automatically (value 9), therefore the weight indication updates very slowly at
this stage. Once the calibration procedure has been completed, the digital filter will return to the pre-
vious value automatically.

Cont’d from

*
(
( the previous
page

( Sets ZERO
( PRG ) CAL ( O
calibration

Enter the
WT-VALUE actual weight ( PRG )
value (SPAN)

CAL
NOTE:
Input signal from the transducer/s
( PRG ) must be stable when entering the
Back to zero and span values.
“CALIBR”
(Main menu)

The Precise400 Series Transmitters can be 4. Enter the actual weight value using the “O” key
calibrated via the front panel keys (Model 400), to select each digit, then use the “UP” or
or with the INOVATIONconfiguration utility. “DOWN” keys to increment or decrement the
value of the selected digit.
Both methods consist of the following steps. 5. Press the “PRG” key to enter the setting (CAL
will be blinking on the display).
 Zero calibration
 Apply a known load (test weight) 6. Press the “PRG” key, (the display indicates
 Edit weight value CALIBR), press either the “UP” or “DOWN”
 Span calibration keys to move to the next parameter.
 Optional linearization (See page 15) 7. If no additional parameter changes are
required, press the “O” key (the display
2-point calibration via the front panel keys indicates STORE ?), press the “PRG” key to
save the changes and return to the operating
To calibrate the transmitter with the front panel mode.
keys, proceed as follows:
Should it be necessary to erase either of the
1. With the unit in “Basic Configuration” mode previous calibration entries, proceed as follows:
and the message “CALIBR” displayed, press
When the message CAL is blinking on the
the “PRG” key (CAL will be blinking on the
display, to erase the zero calibration, press and
display).
hold the “FUN” key, and then press the “O” key.
Release both keys, the previous zero calibration
2. With the system unloaded, press the “O” key
entry has been erased. To erase the span
to perform the ZERO calibration.
calibration, press and hold the “FUN” key, and
3. Apply a known load not less than 10% of the then press the “SET” key. Release both keys, the
net weight value and press the “UP” key. previous span calibration entry has been erased.
End the procedure as described above (points 6
and 7).

9
Complete Configuration via the Front Panel Configuration using INOVATION
(Model 400)
To configure the Precise400 Series Digital /
In order to perform a complete configuration, the Analog Transmitters with the INOVATION
unit must be placed in setup mode. To enter the program, proceed as follows:
setup mode, press and hold the “PRG” and SET” 1. Install INOVATIONon an IBM-compatible
keys on the front of the unit. The “SET” key computer running Windows 95, 98, Me or XP.
must be pressed after the “PRG” key. Release
2. Minimum system requirements are 8MB of
both keys when the word CONFIG is shown on
extended memory and at least 5MB of
the display. The CONFIG menu is the first of six
available hard drive space.
main menus used to completely configure the
instrument. Use either the “UP” or “DOWN” 3. Remove power from both units, and connect
keys to navigate through the six main menus the PC’s serial port to the RS-232 terminals
shown below. on the transmitter. Refer to page 27 for wiring.
Use a std. USB cable in case of using the
USB port. Refer to page 50 for USB drivers
installation on the PC.
4. Apply power to the PC and the transmitter,
Display Main Menu Functions then start the INOVATIONprogram.
CONFIG Parameters for total scale capacity, 5. Switch the transmitter into remote mode by
transducer sensitivity, net and dead removing the upper left cover and moving
load weight values, display divisions. jumper (J1) to the remote control position as
shown below. The Model 400 can also be
CALIBR Zero and full scale calibration. switched into remote mode by going into
complete configuration and then selecting
‘Remote’ from the serial menu. See page 19.
PARAM Parameters for digital filtering,
motion, auto zero and zero tracking Pins 1 - 2 = Remote Control
Pins 2 - 3 = Default Setting
IN-OUT Operating mode selection for
outputs, and input and output test.
3
2
SERIAL Serial output configuration. 1

ANALOG Analog output configuration and

calibration. Precise
DAT
400
Press the “PRG” key to move down to the
sub-menu or parameter desired. Press the
“PRG” key to view the default or previously
selected value for that parameter.

To change a parameter, press either the “UP” 1 9

or “DOWN” keys to view the choices for that
parameter. When the desired selection appears
on the display, press the “PRG” key to enter the
selection and move to the next parameter. When viewing either model from a computer, the
current weight value will be displayed under the
To edit numerical values, use the “O” key to icon representing the unit being configured.
select the digit, then use either the “UP” or If ERROR appears under the transmitters icon,
“DOWN” keys to increment or decrement the re-check all of the wiring connections, verify that
value of the selected digit. Once the value has the unit is in remote mode, and make sure the
been entered, press the “PRG” key to store the icon being displayed matches the address of the
value and move to the next parameters. transmitter to be configured.
Press the “0” key until the display indicates
STORE ?, press the “PRG” key to save the Double-clicking on the transmitters icon will bring
changes and return to the operating mode. you to the INOVATIONMain Setup Screen.

10
Configuration using INOVATION (cont’d) If the operator answers “Yes”, the “Dead load”
value inside the first file folder will change
On this screen you can switch the display automatically according to the new zero.
among net, gross and peak reading, set the If the operator answers “No”, the “Dead load”
serial address, enter values for the two value inside the first file folder will remain set to
setpoints, check the two logic inputs status and the previous value.
the
The third file folder contains the parameter
software release of the instrument. selections for digital filtering, zero tracking, etc.
Click on the SETUP button, seven file folders will
The fourth file folder contains the parameter
appear on the lower half of the screen. The first selections for configuring the inputs and outputs
file folder labeled “Parameters” will be open.
The fifth file folder contains the parameter
The top section in this folder is for entering the selections for the serial output.
total scale capacity, sensitivity, net weight, and
dead load weight values (required parameters The sixth folder contains the parameter
for performing a data sheet calibration) selections for the analog output,
The data sheet calibration procedure allows the The seventh folder provides a means for testing
transmitter to be calibrated without a transducer the outputs and analog output
simulator or test weights. This procedure is The Main Setup Screen and file folders 1
based on the capacity and certified, full scale through 6 all have SEND buttons on them for
mV/V output (sensitivity) of the transducer/s.
downloading the various parameter changes.
To perform a data sheet calibration, enter the
When configuration and calibration has been
above values, then click on the SEND button for completed, the data can be saved on a PC or
that group of parameters.
floppy disk or downloaded (sent) to the
The next section in this file folder is used to transmitter. This method of configuring and
select the display resolution. It consists of a calibrating is very beneficial when several
drop down menu and a SEND button. transmitters with similar configurations are being
set up, or when a transmitter has to be replaced.
The Precise units allow to count by 1’s up to
60,000 counts, Yet, for values greater than
To exit INOVATION, click on the Exit Setup
10,000, the units automatically select a lower
icon. Now click on Option in the upper left corner
resolution to ensure greater stability. After
of the screen, from the drop down menu select
selecting the desired resolution, press the SEND
EXIT, a “Save Changes” window will appear,
button for this parameter. Do not press any of
click on OK. This will return you to the
the other SEND buttons in this folder or the unit
Configuration Utility Screen, click on QUIT.
will revert back to a default setting of x2, x5, etc.
Changes to the display resolution should Figure 2 shows an example of one of the
only be done after the unit has already been INOVATION configuration screens.
calibrated using the data sheet or dead load
procedure.
The bottom parameter selection in this file folder Figure 2
is labeled “Operating Mode”. It enables the unit
to retain the mode of operation in the event of a
power loss. When the power is re-applied, the
transmitter automatically returns to the mode
that it was operating in prior to the power loss.
Changes to the Operating Mode cause an
automatic power off - power on sequence of the
instrument when the configuration will be saved.
This allows the new Operating Mode to take
effect.
The second file folder enables you to calibrate
the unit with a transducer simulator or actual
weight, (recommended method of calibration).
Inside this 2nd file folder, once the zero
calibration has been performed, the program
asks the operator if the new zero has to modify

11
 Figure 2.1

PRINT CONFIGURATION
The Inovation software also allows the
Date 12/01/2004 Test Procedure for DAT instruments
operator to create new configurations,
Status Instrument
save new files and open existing files Device address 2
without having any instrument con- Setpoint 1 value 1500
nected to the computer. Setpoint 2 value 3500
Input 1 status 0
Input 2 status 0
Thanks to this feature, the download of Instrument software version 0.4
a given configuration to the instrument Parameters
can be performed at any time. Total capacity of transducers 10000
Full scale output value (mV/V) 2.0000
To perform the operation mentioned Net weight (value) 8000
Dead load (value) 1500
above click on the “Edit” menu at the left Display resolution 1
end upper corner (See figure 2.1), then Input signal 0.599
enable the function “Edit Configuration Internal counts (Reference only) 155729
Operating mode Net
Offline”. Filters / z-track
The message “Edit” will appear on the Digital filter value (0 to 9: 0 = no filter; 9 = max filter; default 5) 5
display, showing this particular condition. Motion band value (0 to 4: 0 = minimum; 4 = maximum; default 2) 1
Auto zero range setting at power up (0 to 10.0% of net weight: 0 = disble) 0.0
Another useful function concern the Zero tracking (0 to 4: default 2) 2

possibility to print out a report in which Output config. Out 1

Operating mode Net
all the parameters of a given Contact status below setpoint value N. Open
configuration are included. Positive / Negative weight comparison Positive
Immediate activation / activation after stabilization Immediate
The “Print” command can be performed Hysteresis (default 2) 2
by clicking on “Print Configuration”. Setpoint activation time length (in 1/10 sec.) (0 = disable) 0
Time delay for activating setpoint (in 1/10 sec.) (0 = disable) 0
Besides, the command “Report Notes” Output config. Out 2
allows the operator to include a heading Operating mode Gross
Contact status below setpoint value N. Closed
in the report, in order to identify the plant, Positive / Negative weight comparison Positive
the customer name or any other Immediate activation / activation after stabilization Immediate
Hysteresis (default 2) 50
useful information. Setpoint activation time length (in 1/10 sec.) (0 = disable) 0
Time delay for activating setpoint (in 1/10 sec.) (0 = disable) 0
An example of a printed report is given
Serial
on the right side of this page: Baud Rate (default 9600) 9600
Serial port mode (default Continuous transmission) Slave
Serial address (ID Code) (from 01 to 32) 2
Response delay (Demand or Modbus mode) (in 1/100 sec. Max 1 sec.) 25
Data Format (N-8-2 / E-8-1 / O-8-1 for MODBUS mode) N-8-1
Com2 Protocol (None for MODBUS mode) None
Com2 Address (Profibus/DeviceNet Address from 1 to 126) 001
Com2 Baud Rate (Only DeviceNet) 250
Ana. Output
Full scale value (default = Net weight value) 8000
Analog output source (Net Gross Peak H) Net
Analog output selection 0-20mA
No load zero input value 0

12
Complete Configuration Menu

CONFIG CALIBR PARAM IN-OUT SERIAL

( PRG )

( Enter
( O CAPAC ( PRG ) total scale ( PRG )
capacity

Enter
(
( O SENSIT ( PRG ) transducer/s ( PRG )
sensitivity

Enter
(
( O NET ( PRG ) “LIVE” ( PRG )
weight value

Enter
( O
(
DEAD L ( PRG ) “Dead Load” ( PRG )
weight value

Select display
(
( O DSPDIV ( PRG ) divisions ( PRG )
0.001 - 50

View input
( (
( O SIGNAL ( PRG ) signal value ( O
mV/V

View the
( (
( O COUNTS ( PRG ) Raw ( O
A/D counts

Operating
(
( O OPMODE GROSS NET PEAK H mode @
( PRG ) power up

( PRG )
(
( O UPLOAD ( PRG ) RECEIV

(
( O DNLOAD ( PRG ) 2 secs. DONE

Place the unit in complete configuration a digit, then use the “UP” or “DOWN” keys to
mode by pressing and holding the “PRG” increment or decrement the value of the
and SET” keys on the front of the unit. The selected digit. Press the “PRG” key to enter
“SET” key must be pressed after the “PRG” the new value, then press either the “UP” or
key. Release both keys when CONFIG is “DOWN” keys to move to the next sub-menu
displayed. parameter or press the “O” key to return to the
Press the “PRG” key to enter the sub-menu, main menu.
then use either the “UP” or “DOWN” keys to To exit the configuration procedure, return to the
select one of the sub-menu parameters. Press main menu and press the “O” key, (the display
the “PRG” key to view the default or previously will indicate STORE ?), press the “PRG” key to
selected value for that parameter. save the changes and return to the operating
mode.
To change the value, press the “O” key to select
13
Complete Configuration Menu (cont’d)

NOTE: In order to ensure greater stability during the calibration procedure, the digital filter increases
to the maximum value automatically (value 9), therefore the weight indication updates very slowly at
this stage. Once the calibration procedure has been completed, the digital filter will return to the pre-
vious value automatically.

CALIBR PARAM IN-OUT SERIAL ANALOG CONFIG

( PRG )

( Sets ZERO
( PRG ) CAL ( O
calibration

Enter the
WT-VALUE actual weight ( PRG )
value (SPAN)

( PRG ) CAL
NOTE:
Input signal from the transducer/s
must be stable when entering the
zero and span values.

NOTE: Prior to calibration, the transmitter must 5. Enter the actual weight value using the “O” key
be configured, thus giving it a set of operating to select each digit, then use the “UP” or
parameters. “DOWN” keys to increment or decrement the
value of the digit. Press the “PRG” key to enter
The unit can be calibrated using the 2-point the setting (CAL will be blinking on the display).
method or the optional multi-point (linearity
compensation) method. See page 15 for a 6. Press the “PRG” key, (the display indicates
detailed description of the multi-point calibration CALIBR), press either the “UP” or “DOWN
procedure. keys to move to the next parameter.

2-Point calibration via the front panel keys 7. If no additional parameter changes are
required, press the “O” key (the display
To calibrate the transmitter using the front panel indicates STORE ?), press the “PRG” key to
keys, proceed as follows: save the changes and return to the operating
mode.
1. With the unit in “Complete Configuration”
mode, press either the “UP” or “DOWN” Should it be necessary to erase either of the
keys until CALIBR is shown on the display. previous calibration entries, proceed as follows:

2. Press the “PRG” key (CAL will be blinking on To erase the zero calibration, press and hold the
the display). “FUN” key, and then press the “O” key.
Release both keys, the previous zero calibration
3. With the system unloaded, press the “O” key. entry has been erased. To erase the span
calibration, press and hold the “FUN” key, and
4. Apply a known weight not less than 10% of then press the “SET” key. Release both keys, the
the net weight value and press the “UP” key. previous span calibration entry has been erased.

14
Complete Configuration Menu (cont’d)

CALIBR NOTE: Input signal from the

transducer/s must be stable
( PRG ) when entering the linearization
correction point values.
Sets tare
CAL value
Point 0

( SET ) (Keep pressed)

Apply a known
Lin P1 weight on the
scale

( PRG )

Display and
WT VALUE edit test ( PRG )
weight value

Lin P9 ( PRG ) ( PRG )

Lin P2….P8 CAL
(
( O

The Model 400 features a 10-point linearization 5. Press the “PRG” key. The unit will increment
option (available only with the front panel keys). to the next linearization point (Lin P2).
Any number of points up to 10 may be used,
however, the last point must always be the full 6. Repeat steps 3 through 5 for additional points.
scale value of the weighing system.
7. If all 10 points will be linearized, follow the 1st.
Example: A one point linearization correction procedure. For linearization correction using
would require a total of two points, one point less than 10 points, follow the 2nd. procedure.
within the range, and one point for full scale.
1st Procedure (10-point linearization)
Prior to performing the linearization correction,
at least the zero of the unit must have already
7a. Enter the weight value for linearization point
been calibrated, while the full scale value is not
Lin P9, and press the “PRG” key (CAL will be
mandatory. The unit must be in CALIBR mode,
blinking on the display). Press the “PRG” key
and you should have known weights available
again, (the display indicates CALIBR).
equal to the points being set.
7b. Press the “O” key (the display will indicate
Multi-point Calibration via Front Panel Keys
STORE ?), press the “PRG” to save the
1. With the unit in either “Basic or Complete changes and return to the operating mode.
Configuration” mode, press the “PRG” key
(CAL will be blinking on the display). 2nd. Procedure (less than 10-point linearization)

2. Press and hold the “SET” key until Lin P1 is 7a. The last linearization point must be the full
blinking on the display. scale value. Press the “O” key, (CAL will be
blinking on the display).
3. Apply a known weight for the first linearization
point, and press the “PRG” key. 7b. Press the “PRG” key (the display will show
CALIBR). Press the “O” key (the display will
4. Enter the actual weight value using the “O” indicate STORE ?).
key to select each digit, then use the “UP”
and “DOWN” keys to increment or decrement 7c. Press the “PRG” key to save the changes
the value of the selected digit. and return to the operating mode.

15
Complete Configuration Menu (cont’d)

PARAM IN-OUT SERIAL CONFIG CALIBR

( PRG )

Enter value
(
( O FILTER ( PRG ) 0 to 9 ( PRG )
Default = 5

Enter value
(
( O MOTION ( PRG ) 0 to 4 ( PRG )
Default = 2

Enter value
(
( O AUTO 0 ( PRG ) 0.0 to 10.0% ( PRG )
0 = Disabled

Enter value
(
( O 0 TRAC ( PRG ) 0 to 4 ( PRG )
Default = 2

Enter value
(
( O 0 BAND ( PRG ) 0 to 200 ( PRG )
Default = 100

1. With the unit in “Complete Configuration” 5. Press the “PRG” key to enter the new value,
mode, press either the “UP” or “DOWN” then press either the “UP” or “DOWN” keys to
keys until PARAM is shown on the display. move to the next sub-menu parameter or
press the “O” key to return to the main menu.
2. Press the “PRG” key to enter the sub-menu,
then use either the “UP” or “DOWN” keys to 6. To exit the configuration procedure, return to
select one of the sub-menu parameters. the main menu and press the “O” key, (the
display indicates STORE ?), press the “PRG”
3. Press the “PRG” key to view the default or key to save the changes and return to the
previously selected value for that parameter. operating mode.

4. To change the value, press the “O” key to

select a digit, then use the “UP” or “DOWN”
keys to increment or decrement the value of
the selected digit.

See Table 2 on page 28 for a detailed explanation of the “PARAM” parameter selections

16
 Complete Configuration Menu (cont’d)

IN-OUT SERIAL ANALOG CONFIG CALIBR PARAM

( PRG )

(
( O MODE 1 ( PRG )

( PRG ) NET
( PRG ) GROSS
See notes
( ( PRG ) PEAK H
( O HYST 1 ( PRG ) on page 30 ( PRG )
Default = 2

( PRG ) N.O.
( Enter value
( O TIMER 1 ( PRG ) 0.00 - 100.0 ( PRG ) ( PRG ) N.C.
Default = 0

( Enter value ( PRG ) POS.

( O DELAY 1 ( PRG ) 0.00 - 100.0 ( PRG )
Default = 0 ( PRG ) NEG.

Refer to
( O
(
MODE 2 ( PRG ) procedure for NORMAL
MODE 1
STABLE

See notes
(
( O HYST 2 ( PRG ) on page 30 ( PRG )
Default = 2

Enter value
(
( O TIMER 2 ( PRG ) 0.00 - 100.0 ( PRG )
Default = 0

( Enter value
( O DELAY 2 ( PRG ) 0.00 - 100.0 ( PRG )
Default = 0

Continued on the following page

17
 Complete Configuration Menu (cont’d)

Cont,d from the previous page

Closing Input 1 = 10
Closing Input 2 = 02
( (
( O TEST IN ( PRG ) IN 0 0 ( O

(
( O TEST OUT ( PRG )
(
( O OUT 00
(
( O OUT 10 See
( O
(
OUT 02 Table 1
(
( O OUT 12

Table 1

Display OUTPUT 1 OUTPUT 2

(status) (status)
OUT 00 OFF OFF

OUT 10 ON OFF

OUT 02 OFF ON

OUT 12 ON ON

See Table 6 on page 30 for a detailed explanation of the “IN - OUT” parameter selections

18
 SERIAL ANALOG CONFIG CALIBR PARAM IN-OUT
( PRG )

(
(
BAUD2R BAUD1R
* ( PRG )
O BAUD R
( PRG ) 2400
( PRG ) 9600
(
( O PROT-1 ( PRG ) ( PRG ) 19200
( PRG ) CONTIN ( PRG ) 38400
( PRG ) DEMAND ( PRG ) 115200
( PRG ) AUTOM
( PRG ) SLAVE
MODBUS ( PRG )
( PRG ) BCD
( PRG ) PRINT ( PRG ) n 8 2
( PRG ) NONE ( PRG ) E 8 1

( PRG ) o 8 1

(
( ** ( PRG )
O PROT-2

( PRG ) PROFIB Use the “PROT-2” ONLY when the

instrument is equipped with the
( PRG ) DEVNET Profibus-DP or DeviceNet option cards.
Otherwise do not enter into this menu.
( PRG ) NONE

( O
(
ADDRES ( PRG )
Enter value
01 - 32 ( PRG ) *“BAUD1R”, “BAUD2R” and “DC-ADD”
Max # 32
come up on the display only if the
“PROT-2” menu has been set as
“DEVNET”.
*
DC-ADD
( Enter value
( PR-ADD ( PRG ) ( PRG )
O 001 - 126
**
When the “PROT-2” menu is set as
“PROFIB” or “DEVNET”, the “ANALOG”
menu will be automatically disabled.
Therefore the access to the “ANALOG”
Enter value menu is possible only when the
(
( O DELAY ( PRG ) 0.00 - 1.00 ( PRG ) “PROT-2” has been set as “NONE”.
Max 1 sec.

( ( OPERATING
( O REM-CO ( PRG ) REMOTE ( O MODE

( PRG ) n 8 1
( PRG )
(
( O DATA F ( PRG ) n 8 2
( PRG ) E 8 1
( PRG ) o 8 1
( PRG ) n 7 2
( PRG ) E 7 1
( PRG ) E 7 2
See Tables 3 through 5 for ( PRG ) o 7 1
a detailed explanation of the ( PRG ) o 7 2
“SERIAL” parameter selections
19
 Complete Configuration Menu (cont’d)

ANALOG CONFIG CALIBR PARAM IN-OUT SERIAL

( PRG )

( Enter span
( O F-SCAL ( PRG ) value ( PRG )

(
( O MODE ( PRG )

( PRG ) NET
( PRG ) GROSS
( Enter weight
( O ANZERO ( PRG ) value ( PRG )
( PRG ) PEAK H

(
( O TEST ( PRG )
(
( O OUT 0

(
( O RANGE ( PRG ) (
( O OUT 100

( PRG ) 0-20 mA
( PRG ) 4-20 mA
( PRG ) 0-10 V
( PRG ) 0-5 V

(
( O OFFSET ( PRG )

( PRG ) -0- Adjust value (

with UP & ( O
( PRG ) - FS - DOWN keys

1. With the unit in “Complete Configuration” 5. To edit numerical values, use the “O” key to
mode, press either the “UP” or “DOWN” select the digit, then use either the “UP” or
keys until ANALOG is shown on the display. “DOWN” keys to increment or decrement the
value of the selected digit.
2. Press the “PRG” key to enter the sub-menu,
then use either the “UP” or “DOWN” keys to 6. Press the “PRG” key to enter the new value,
select one of the sub-menu parameters. then press either the “UP” or “DOWN” keys to
move to the next sub-menu parameter or
3. Press the “PRG” key to view the default or press the “O” key to return to the main menu.
previously selected value for that parameter.
The “ANZERO” parameter is a negative weight
4. To change a parameter, press either the “UP” value to which the zero offset of the analog
or “DOWN” keys to view the choices for that output can be referred.
parameter.
When the desired selection appears on the Example: If the selected range is 4/20 mA and
display, press the “PRG” key to enter the the “ANZERO” value is “10”, the analog output
selection and move to the next parameter. value will be 4 mA when the weight will be “–10”

20
Serial Communication

Baud Rates
2400, 9600, 19200, 38400, and 115200

Data Formats
All serial characters are in ASCII format, and consist of the following.

1 Start Bit, 7 or 8 Data Bits, 1 or 2 Stop Bit, Parity No, Even or Odd.
The above data depend on the selection made in the “SERIAL” menu (see Table 3 on page 28)

Transmission of the serial data can be initiated in several ways as described below.

Automatic mode
The “Automatic” mode is used to interface with printers or other data acquisition devices. The serial
data is transmitted automatically, upon stabilization whenever the weight value has increased or
decreased more than 20 divisions.
This function is not performable when the “MOTION” parameter is set to 0 (weight stability check
disabled).

Continuous mode
The “Continuous” mode is used to interface with computers, remote displays, or other types of
devices that require constant data updating.

Demand mode
The “Demand” mode is used to interface with printers and requires a manual print command from the
front panel keys (Model 400) or a remote contact closure to initiate the output.
In the above modes, the transmitter sends serial data using the format shown below:

STX <status> <net weight> <gross weight> <peak value> ETX <chksum> EOT

STX (start of text) = 02h ETX (end of text) = 03h EOT (end of transmission) = 04h

<status> = 1 ASCII character consisting of the following:

“S” = Stable
“M” = Motion
“O” = Overload
“E” = Error
<net weight> = 6 ASCII characters
<gross weight > = 6 ASCII characters
<peak value> = 6 ASCII characters
<checksum> = 2 ASCII characters (STX & ETX are not included in the checksum)

NOTE: The brackets “<“ “>“ are not sent, they are only shown for clarification.

The checksum control value is obtained by performing the XOR operation.

It is expressed with 2 Hexadecimal digits. Example: 25 = 1D

The result of the above calculation equals 1 character, which can be a numerical value of 0 to 9 or
A to F (Hexadecimal)

21
Serial Communication (cont’d)

Slave mode
The slave mode is used for interfacing with distributed control systems (DCS) or programmable logic
controllers (PLC). This mode requires a data request from the master to initiate the output.
In this mode the host sends serial data to the transmitter using the formats shown below:

<addr> “N” EOT

After receiving the request, the transmitter responds with the following data string.

<addr> “N” <status> <net weight> <gross weight> <peak value> ETX <chksum> EOT

In case of an error, the transmitter will respond with the following data string.

<addr> NAK EOT

<addr> serial address + 80h Example: address 1 would be 1 + 80h = 81h

ETX (end of text) = 03h EOT (end of transmission) = 04h

Character strings

<status> = 1 ASCII character consisting of the following:

“S” = Stable
“M” = Motion
“O” = Overload
“E” = Error
<net weight> = 6 ASCII characters
<gross weight > = 6 ASCII characters
<peak value> = 6 ASCII characters
<checksum> = 2 ASCII characters (<Addr> & ETX are not included in the checksum)

NOTE: The brackets “<“ ”>“ are not sent, they are only shown for clarification.
The checksum control value is obtained by performing the XOR operation.
It is expressed with 2 Hexadecimal digits. Example: 25 = 1D
The result of the above calculation equals 1 character, which can be a numerical value of 0 to 9 or
A to F (Hexadecimal)

Programming the set-points

Command from the host

<addr> “S” <s1> <s2> ETX <chksum> EOT

<s1> = 6 ASCII characters for set-point 1

<s2> = 6 ASCII characters for set-point 2

The transmitter responds with the following data string:

<addr> “S” ACK EOT

In case of an error, the transmitter will respond with the following data string.

<addr> NAK EOT

The programmed values are stored in RAM, however, they are not retained if the power is removed.
There is no limit on the number of times that these commands can be performed.

22
Store set-point values in Eeprom

Command from the host

<addr> “M” EOT

The transmitter responds with the following data string:

<addr> “M” EOT

In case of an error, the transmitter will respond with the following data string.

<addr> NAK EOT

This command is used to store the programmed set-point values in Eeprom.

This command can be performed up to 100,000 times.

Request set-point values

Command from the host

<addr> “R” EOT

The transmitter responds with the following data string:

<addr> “R” <s1> <s2> ETX <chksum> EOT

In case of an error, the transmitter will respond with the following data string.

<addr> NAK EOT

“Net mode” / ”Gross mode” switch command

This command performs the same function of the “FUN” key.

Switch to Gross weight mode

Command from the host

<addr> “C” “L” EOT

The transmitter responds with the following data string:

<addr> “C” “L” ACK EOT

In case of an error, the transmitter will respond with the following data string.

<addr> NAK EOT

23
 Switch to Net weight mode

Command from the host

<addr> “C” “N” EOT

The transmitter responds with the following data string:

<addr> “C” “N” ACK EOT

In case of an error, the transmitter will respond with the following data string.

<addr> NAK EOT

Zero / Tare / Peak reset command

This command performs the same function of the “0” key and/or logic input (1).
It’s used to zero the unit when in Gross mode, tare the unit when in Net mode, and reset the value to
zero when operating in Peak Hold mode.

Command from the host

<addr> “A” “A” EOT

The transmitter responds with the following data string:

<addr> “A” “A” ACK EOT

In case of an error, the transmitter will respond with the following data string.

<addr> NAK EOT

Modbus mode

The Modbus mode is used to communicate with Modicon Programmable Controllers using a unique
message structure that the controllers can understand regardless of the type of networks being used.

Please refer to the tables on pages 31 through 41 for information regarding the MODBUS RTU
Protocol Specifications.

Modbus® and Modicon® are registered trademarks of the Schneider Automation Group.

24
Print mode

This protocol enables the communication with a printer. The data on the printed report are the follo-
wing: NET, GROSS and TARE (+ PEAK, if enabled).

The print command takes place by pressing the PRG key or by activating the remote input #2. (*)

The printed report is issued only if the following conditions are met:
 Gross weight positive
 Net weight positive
 Stable weight (**)
 BLIND function disabled (***)

(*) In case the PRG key is locked (see page 6) the print command can take place through the
remote input #2 only.
(**) The weight stability condition is controlled only if the “MOTION” parameter (see page 16) is set
to a value  0.
If MOTION = 0 the printed report is issued even if the weight is unstable..
(***)In case the BLIND function is enabled (see page 6) the print command can take place through
the remote input #2 only, not via the PRG key.

Between one printout and the next one the weight must change for at least 20 counts.

Connection to the printer

Rx
Tx
Gnd

Tx Rx Gnd

27 24 19

Printed report formats

Standard Peak enabled

Net 9.488 kg Net 9.488 kg

Gross 19.874 kg Gross 19.874 kg
Tare 10.386 kg Tare 10.386 kg
Peak 35.294 kg

25
 Serial Output Wiring Connections

RS-232 serial connections to a computer, remote serial display or other data acquisition device.
See Figure 3.

Figure 3

Rx
Tx
Gnd

Tx Rx Gnd

27 24 19

RS-422 and 485 serial configurations allow connection to a distributed control system (DCS) or
programmable logic controller (PLC) over long distances (up to 3200 ft.)
RS-422 allows a point-to-point connection, while RS-485 allows a multi-drop connection of up to 32
units. See Figure 4 for the RS422 connection and Figure 5 for the RS485 connection.

Figure 4 RS422 connection

+ Rxd

- Rxd

+ Txd

- Txd

22 19

26
 Figure 5 RS485 Connection

Gnd
RS485 +
RS485

24 23 22 21 20 19 24 23 22 21 20 19
Transmitter # 32 Transmitter # 1

“INOVATION” Software: RS232 or USB wiring to PC

PC (9 pole sub-D connector) PC (25 pole sub-D connector)

Rx (Pin 2) Rx (Pin 3)

Tx (Pin 3) Tx (Pin 2)

Gnd (Pin 5) Gnd (Pin 7)

Tx Rx Gnd

27 24 19
Std. USB cable
PC (USB port)

3
USB 2
1

Precise
DAT
400

Not only the RS232 or USB, but also the RS422 or RS485 can be used for the communication
with the Inovation software. Refer to Figures 3, 4, 5 depending on the desired connection.

27
 Sub-menu parameter selections

Table 2 “PARAM” Menu

PARAMETERS SELECTIONS DESCRIPTION VALUES

FILTER 0 to 9 Digital filtering value 0 = no filtering

(See notes below) (Default = 5) 9 = maximum filtering

MOTION 0 to 4 Weight stabilization 0 = Weight always stable

(Default = 2) 1 = slow stabilization
4 = fast stabilization
AUTO 0 0.0 to 10.0% Auto zero range @ 0 = function disabled
(of net weight value) power up.
0 TRAC 0 to 4 Zero tracking range 0 = function disabled
(Default = 2)
0 BAND 0 to 200 divisions “Zero” key operating 0 = function disabled
(See notes below) (Default = 100) range

Digital filtering affects the update rate and speed of the unit. 0 BAND:
Filter setting = 0 Update rate = 25 Hz this parameter defines the operating
Filter setting = 1 Update rate = 10 Hz
range of the “Zero” key (and Input 1),
Filter setting = 2 Update rate = 5 Hz
Filter setting = 3 Update rate = 2.5 Hz used to zero the unit in Gross mode.
Filter setting = 4 Update rate = 1.5 Hz
Filter setting = 5 Update rate = 1 Hz
Filter setting = 6 Update rate = 0.7 Hz
Filter setting = 7 Update rate = 0.4 Hz
Filter setting = 8 Update rate = 0.2 Hz
Filter setting = 9 Update rate = 0.1 Hz

Table 3 “SERIAL” Menu

PARAMETERS SELECTIONS DESCRIPTION
BAUD R 2400, 9600,19200, COM1 Baud rate selection
38400, 115200 Standard baud rate: 9600

PROT-1 NONE COM1 Serial port transmission mode selection

CONTIN (ASCII) Standard transmission mode: Continuous
DEMAND (ASCII)
AUTOM (ASCII) (*) The possible Data Format selection for this
SLAVE (ASCII) protocol are: N 8 2 ; E 8 1 ; o 8 1
PRINT (ASCII) (Parity, Data bits, Stop bits)
MODBUS (*)
BCD
PROT-2 PROFIB COM2 Serial port transmission mode selection
DEVNET
NONE
ADDRES 01 to 32 COM1 Identification address, selectable from 1 to 32
PR ADD 001 to 126 Profibus-DP or DeviceNet node address
DN ADD
DELAY 0.00 to 1.00 Delay in responding to a data request from the host
in “Demand” or “MODBUS” modes (COM1).
Time unit: 1/100 second (maximum 1 second)
REM-CO REMOTE Enables communication with “INOVATION” without
re-positioning jumper (J1) as described on page 10.
DATA F N-8-1 N-8-2 E-8-1 O-8-1 Data Format selection for the ASCII protocols
N-7-2 E-7-1 E-7-2 O-7-1 (Parity, Data bits, Stop bits). See “PROT-1”
O-7-2

28
Sub-menu parameter selections (cont’d)

Continuous transmission:
The transmission speed depends on the digital filter setting and the baud rate value selected.
See Table 4 below for additional information.

Table 4

BAUD RATE
2400 9600 19,200 38,400 115,200

D 0 6 Hz 25 Hz 50 Hz 50 Hz 50 Hz
I 1 6 Hz 25 Hz 50 Hz 50 Hz 50 Hz
G
I 2 6 Hz 25 Hz 50 Hz 50 Hz 50 Hz
T 3 6 Hz 25 Hz 25 Hz 25 Hz 25 Hz
A
L 4 6 Hz 25 Hz 25 Hz 25 Hz 25 Hz

F 5 6 Hz 12 Hz 12 Hz 12 Hz 12 Hz
I 6 6 Hz 12 Hz 12 Hz 12 Hz 12 Hz
L
T 7 6 Hz 12 Hz 12 Hz 12 Hz 12 Hz
E
R 8 6 Hz 6 Hz 6 Hz 6 Hz 6 Hz
9 6 Hz 6 Hz 6 Hz 6 Hz 6 Hz

Driver for the optional BCD Board:

The transmission speed depends on the digital filter setting and the baud rate value selected.
See Table 5 below for additional information.

Table 5

BAUD RATE
2400 9600

D 0 12 Hz 50 Hz
I 1 12 Hz 50 Hz
G
I 2 12 Hz 50 Hz
T 3 12 Hz 25 Hz
A
L 4 12 Hz 25 Hz

F 5 12 Hz 12 Hz
I 6 12 Hz 12 Hz
L
T 7 12 Hz 12 Hz
E
R 8 6 Hz 6 Hz
9 6 Hz 6 Hz

29
Sub-menu parameter selections (cont’d)

Table 6

“IN - OUT” MENU

PARAMETERS SELECTIONS DESCRIPTION

MODE 1 GROSS Operating mode selection for

NET output number 1.
PEAK H

N.O Contact status below the

N.C setpoint value
POS. Comparison with positive or
NEG. negative weight values
NORMAL Output enabled only after the
STABLE weight reading has stabilized.
HYST - 1 Hysteresis setting, used to
(See notes below) (Default = 2) eliminate chattering of the
relay @ coincidence point.
TIMER 1 0.0 to 10.0 The output is disabled after
(0 = disabled) the time period has expired.
(1/10 second increments )
DELAY 1 0.0 to 10.0 Time delay before the output
(0 = disabled) is enabled.
(1/10 second increments)
Same parameter selections as above for output 2

TEST IN See page 18 Test procedure for inputs

TEST OUT Test procedure for outputs

NOTES:

1. The hysteresis setting must be less than it’s respective setpoint value.
Entering a hysteresis setting greater than the setpoint value will automatically
be replaced with a default setting of (2) counts.

2. Hysteresis settings of within 10 counts of their respective setpoint values are

possible, however, much smaller values are normally sufficient.

3. A large hysteresis setting (4,990 counts) could be used as follows:

Setpoint 1 is used to fill a vessel with 5,000 lbs. of product, and setpoint 2 will be
used as a high weight alarm. When the weight in the vessel reaches 5,000 lbs.,
relay # 1 de-energizes stopping the flow, feed, etc. The product is drawn from the
vessel as required, when the weight in the vessel reaches 10 lbs., setpoint # 1’s
relay re-energizes and automatically refills the vessel to 5,000 lbs.

30
 MODBUS RTU PROTOCOL SPECIFICATIONS

1. PRECAUTIONS

The Modbus protocol writes directly into the memory of the instrument.
Use caution when sending data to the instrument:
The data being sent must be within the specified ranges given in the tables on the following pages.
Some of the data is written into the E2prom’s memory (refer to the column in the tables “Stored in
E2prom”) for additional information. This memory can only be written to 100,000 times, therefore,
you should avoid writing continuously into this memory.
To confirm the storage of a new value in the E2prom, perform the MAKE - BACKUP function.
If this function is not performed, all of the newly stored data will be lost when power is removed from
the instrument.
The “Set point” setting does not require the MAKE - BACKUP function to be performed.
The set point values are expressed as number of divisions
This means that any set point value (temporary or permanent) has to be multiplied by the “Display
division” data, in order to obtain the actual value of the set point.
E.G. Assuming that the “display division” value is 0.2; if the PLC asks for a set point value and get
the data “3949” from the instrument, this means that the actual value of the set point is 789.8
(3949 x 0.2 = 789.8)
Even the other weight values are given as number of divisions, except for the “Net weight” and
“Gross weight”.
“Net weight” and “Gross weight” (Modbus addresses 40006 and 40007) are given as absolute
values

Note:
The numeric values on the following pages for (addresses, codes, and data) are represented as
decimal values.

The addresses given in the following tables refer to the standards provided in the Modicon Modbus
Protocol Reference Guide PI-MBUS-300 Rev J.

2. DATA FORMAT

 Start Bit : 1
 Data Bits : 8, the Least Significant Bit (LSB) is sent first.
 Parity : No, Even, Odd
 Stop Bits : 1, 2
Possible Data Format Selection: N-8-2 E-8-1 O-8-1

3. LIST OF FUNCTIONS SUPPORTED

Function Description
01 (01) READ COIL STATUS
03 (03) READ HOLDING REGISTERS
04 (04) READ INPUT REGISTERS
05 (05) FORCE SINGLE COIL
06 (06) PRESET SINGLE REGISTER
15 (0F) FORCE MULTIPLE COILS
16 (10) PRESET MULTIPLE REGISTERS

Hexadecimal values between brackets

31
Each single function is explained in detail on pages 34, 35 and 36 of the operator’s manual.
Each function is composed by a Query (request master instrument) and a Response
(answer instrument master). Queries and responses are composed by a sequence of data that
are briefly explained here below (***), please note that the code “0x” before any value indicates that
the value is represented as hexadecimal value.
Besides, all the Modbus addresses (the ones mentioned in the left end column on pages 38 and
39) have to be represented as hexadecimal values, but, only for these addresses, there is an
important rule to be taken into consideration:
Before converting the address into an hexadecimal value, the 1st digit on the left has not to
be considered and the remaining 4 digits have to be decremented by “1”.
1st Example:
To represent the address 40150 (“display division” on page 38) as hexadecimal value, exclude the
digit “4” (remains “0150”), then decrement by 1 the number “0150”. The result is “0149”, now perform
the conversion into hexadecimal. The result is “00 95”. This is the value to be used in the query.
2nd Example:
To represent the address 40102 (“load cells sensitivity” on page 38) as hexadecimal value, exclude
the digit “4” (remains “0102”), then decrement by 1 the number “0102”. The result is “0101”, now
perform the conversion into hexadecimal. The result is “00 65”. This is the value to be used in the
query.

(***)
Address: is the number of the instrument’s address, represented as hexadecimal value
(in this case do not decrement by 1 the number).
Function: is the number of the function to be performed (see the table above)
1st Output address: is the address number where the reading of the outputs status has to start
Number of outputs: is the number of the outputs to be read
1st Input address: is the address number where the reading of the inputs has to start
Number of inputs: is the number of the inputs to be read
Number of bytes: represents the number of bytes which compose a data
2 byte CRC: “Cyclical Redundancy Check”. It’s an algorithm used as checksum.

4. INSTRUMENT RESPONSE TIME

The response time for most data requests is within 20 milliseconds.

Exceptions:

 E2prom Backup command (Maximum time = 350 milliseconds)

 Writing of the following registers: Load cell/s total capacity, load cell/s sensitivity, Net weight,
Tare weight, and Filter (Maximum time = 550 milliseconds).

4.1 RESPONSE TIME WHEN CONNECTING SEVERAL SLAVES

Single twisted pair

Query Master to slave 01 Response time slave 01 Response slave 01 20 mSec delay Query Master to slave 02

Double twisted pair

Query Master to slave 01 Response time slave 01 Response slave 01 delay Query Master to slave 02

With a baud rate of 19200 Time = 15 to 20 milliseconds

32
Scheme of the communication time in a Master-Slave RS-485 system, using a double twisted pair.

RTU Baud 9600

8 mSec 1 mSec 8 mSec

Tx PC

Tx Slave 01

Tx Slave 01

RTU Baud 19200

4 mSec 1 mSec 4 mSec

Tx PC

Tx Slave 01

Tx Slave 01

15 mSec

33
 5. LIST OF TRANSMISSION STRINGS

Symbols used in the strings

A = 1 byte for slave address (Example: Slave Nº 17: A = 0 x 11)

5.1. FUNCTION 1: READ COIL STATUS

QUERY

Address Function 1st. Output address Number of outputs 2 byte Total byte
A 0 x 01 0 x 0000 0 x 0008 CRC 8

RESPONSE

Address Function Number of bytes Status of outputs 2 byte Total byte

A 0 x 01 0 x 01 0 x 00 CRC 6

Status of outputs: In this byte each output is identified by 1 bit

The address of the 1st. output is the least significant bit (LSB) in this byte. (1 = On, 0 = Off).

5.2. FUNCTION 2: READ INPUT STATUS NOT USED

5.3. FUNCTION 3: READ HOLDING REGISTERS

QUERY

Address Function 1st. Register address Number of register 2 byte Total byte

A 0 x 03 0 x 0000 0 x 0002 CRC 8

RESPONSE

Address Function Number of bytes 1st. Register 2nd. Register 2 byte Total byte

A 0 x 03 0 x 04 0 x 0064 0 x 00C8 CRC 3 + 2 x Nº of

registers + 2

5.4 FUNCTION 4: READ INPUT REGISTERS (“read only”)

QUERY

Address Function 1st. Register address Number of register 2 byte Total byte

A 0 x 04 0 x 0000 0 x 0001 CRC 8

RESPONSE

Address Function Number of bytes 1st. register 2 byte Total byte

A 0 x 04 0 x 02 0 x 0064 CRC 3 + 2 x Nº of registers + 2

34
5.5. FUNCTION 5: FORCE SINGLE COIL

QUERY

Address Function Output address Status of output 2 byte Total byte

A 0 x 05 0 x 0000 0 x FF00 CRC 8

RESPONSE

Address Function Output address Status of output 2 byte Total byte

A 0 x 05 0 x 0000 0 x FF00 CRC 8

Status of output: (FF00 = On, 0000 = Off)

The response includes the echo of the query

5.6. FUNCTION 6: PRESET SINGLE REGISTER

QUERY

Address Function Register address Register value 2 byte Total byte

A 0 x 06 0 x 0000 0 x 1234 CRC 8

RESPONSE

Address Function Register address Register value 2 byte Total byte

A 0 x 06 0 x 0000 0 x 1234 CRC 8

The response includes the echo of the query

5.7 FUNCTION 7: READ EXCEPTION STATUS NOT USED

5.8 FUNCTION 8: DIAGOSTIC NOT USED

5.11 FUNCTION 11: FETCH COMM EVENT CTR NOT USED

5.12 FUNCTION 12: FETCH COMM EVENT LOG NOT USED

5.15 FUNCTION 15: FORCE MULTIPLE COILS

QUERY

Address Function 1st. Output address Nº of outputs Nº of bytes Status of outputs 2 byte Total byte

A 0 x 0F 0 x 0000 0 x 0002 0 x 01 0 x 00 CRC 10

RESPONSE

Address Function 1st. Output address Nº of outputs 2 byte Total byte

A 0 x 0F 0 x 0000 0 x 0002 CRC 8

Number of outputs: Number of the output to be written, starting from the address.
Number of bytes: Number of bytes transmitted as status of outputs (8 outputs each byte)
Status of outputs: 1 output each bit (1 = On, 0 = Off); the 1st. Output coincides with the least significant bit (LSB) of the 1st.
Byte. Non-significant bits are set to zero.
The response includes the identification of the modified outputs.

35
5.16 FUNCTION 16: PRESET MULTIPLE REGISTERS

QUERY

Address Function 1st. Number of Number of 1st. 2nd. 2 byte Total byte
Register output register bytes Register Register
value value
A 0 x 10 0 x 0000 0 x 0002 0 x 04 0 x 0000 0 x 0000 CRC 7 + 2 x Nº of
registers + 2

RESPONSE

Address Function 1st. Register address Nº of registers 2 byte Total byte

A 0 x 10 0 x 0000 0 x 0002 CRC 8

Number of registers: Number of the registers to be written, starting from the address.
Number of bytes: Number of bytes transmitted as registers value (2 bytes each register)
Registers value: Content of the registers, starting from the 1st.
The response includes the identification of the modified registers.

6 BROADCAST MODE

This function is not implemented in the instrument

7.1. COMMUNICATION ERRORS

The communication strings are controlled by the CRC (Cyclical Redundancy Check). If a communication error occurs, the
slave unit doesn’t answer. The master unit controls a timeout when waiting for the response from the slave. If the slave
doesn’t answer during this timeout, it means that a communication error has occurred.

7.2. ERRORS IN THE RECEIVED DATA

If the string is received correctly but is not executable, the slave answers the master with an EXCEPTION RESPONSE.
The field “function” is transmitted having the most significant digit (MSD) set to 1.

EXCEPTION RESPONSE

Address Function Exception code 2 byte

A Function + 80h 0 x 01 CRC

Description of the Exception codes.

Code Description
1 ILLEGAL FUNCTION (The function is not valid or not supported)
2 ILLEGAL DATA ADDRESS (The specified data address is not available)
3 ILLEGAL DATA VALUE (The data value received is not valid)

36
6 BROADCAST MODE

This function is not implemented in the instrument

7.1. COMMUNICATION ERRORS

The communication strings are controlled by the CRC (Cyclical Redundancy Check). If a communication error occurs, the
slave unit doesn’t answer. The master unit controls a timeout when waiting for the response from the slave. If the slave
doesn’t answer during this timeout, it means that a communication error has occurred.

7.2. ERRORS IN THE RECEIVED DATA

If the string is received correctly but is not executable, the slave answers the master with an EXCEPTION RESPONSE.
The field “function” is transmitted having the most significant digit (MSD) set to 1.

EXCEPTION RESPONSE

Address Function Exception code 2 byte

A Function + 80h 0 x 01 CRC

Description of the Exception codes.

Code Description
1 ILLEGAL FUNCTION (The function is not valid or not supported)
2 ILLEGAL DATA ADDRESS (The specified data address is not available)
3 ILLEGAL DATA VALUE (The data value received is not valid)

37
 List of the Holding Registers (4x)

Modbus Description Range Value Stored in

Address E2prom
Set Points and Weight values Relevant menu
40001 Set point 1 temporary 0 to full scale NO
40002 Set point 2 temporary 0 to full scale NO
40003 Command register 01-05, 10, 12-13, 20 See relative table
(Hex) (page 41)
40004 Set point 1 permanent SET 1 0 to full scale YES
40005 Set point 2 permanent SET 2 0 to full scale YES
40006 Gross weight value (H) 0 to full scale
40007 Gross weight value (L)
40008 Input status byte See relative table
(page 40)
40009 Net weight value (H) 0 to full scale
40010 Net weight value (L)
Peak Value

40020 Peak gross weight 0 to full scale NO

Command data and status registers

40081 Command data register 11 (Hex) See relative table

(page 41)
40082 Status register 00, 03-05 (Hex) See relative table
(page 41)
40083 Status data register 06 (Hex) See relative table
(page 41)
Basic Configuration

40100 Load cell/s total capacity (kg) H CAPAC 0-500000 (1) YES
40101 Load cell/s total capacity (kg) L
40102 Sensitivity of load cell/s SENSIT 1.0000 - 4.0000 (5) YES

40103 Net weight of the weighing system (H) NET 0 to full scale (1) YES
40104 Net weight of the weighing system (L)
40105 Dead load of the weighing system (H) DEAD L 0 to full scale (1) YES
40106 Dead load of the weighing system (L)
40110 Operating mode OPMODE 0-2 (3) YES
40150 Display divisions DSPDIV 0 - 14 (2) YES
See Table “A”
Weighing Parameters
40180 Digital filter value FILTER 0-9 (3) YES
40181 Motion band value MOTION 0-4 (3) YES
40182 Auto zero value AUTO 0 0.1-10.00 (3) (5) YES
40183 Zero tracking value 0 TRAC 0-4 (3) YES
Set Points Configuration
40200 Operating mode Set point 1 MODE 1 YES
40201 Hysteresis Set point 1 HYST 1 0 to full scale YES
40202 Timer Set point 1 TIMER1 0.1-100.0 (5) YES
40203 Delay Set point 1 DELAY1 0.1-100.0 (5) YES
40204 Operating mode Set point 2 MODE 2 YES
40205 Hysteresis Set point 2 HYST 2 0 to full scale YES
40206 Timer Set point 2 TIMER2 0.1-100.0 (5) YES
40207 Delay Set point 2 DELAY2 0.1-100.0 (5) YES

Holding Register Table continued on the following page.

38
 List of the Holding Registers (4x) cont’d

Serial Configuration Relevant menu

40300 Baud rate BAUD R 0-4 (3) YES
40301 Serial address ADDRES 1-32 YES
40302 Response delay DELAY 0-100 YES
Analog Output
40400 Analog output full scale F-SCAL 0 to full scale YES
40401 Analog output operating mode MODE 0-3 (3) YES
40402 Analog output range RANGE 0-3 (3) YES
40403 Zero offset OFFSET (4)
40404 Full scale offset OFFSET (4)
40405 An-Zero (negative weight value for zero ANZERO YES
analog output)

(1) The combined theoretical net and tare weight values must not exceed the total capacity value.
(2) Refer to the 15 values from 0.001 to 50
(3) For the list of values please refer to the user manual.
(4) They are stored in the E2prom if writing the function 0000 in the status register.
(5) When setting these values the decimal point has not to be included.

Serial parameter specifications:

 Once the “serial address” and “response delay” have been modified, they take effect immediately.
 The serial port mode can’t be modified via Modbus.
 When setting a new baud rate value, the power to the instrument must be removed and re-applied in order for the
changes to take effect.

TABLE “A”
IDENTIFICATION CODES

Code Display divisions

0 (00) 0.001
1 (01) 0.002
2 (02) 0.005
3 (03) 0.01
4 (04) 0.02
5 (05) 0.05
6 (06) 0.1
7 (07) 0.2
8 (08) 0.5
9 (09) 1
10 (0A) 2
11 (0B) 5
12 (0C) 10
13 (0D) 20
14 (0E) 50

Hexadecimal values between brackets

39
 Table of the Input Status bytes

Description Bit’s meaning The Modbus address 40008 is composed by

2 bytes. The conversion of these 2 bytes from hex
0 1 into binary gives the meaning of each single bit
Net weight polarity + - described in this table.
1
E.g.
Gross weight polarity + - 0 if the bytes in the address 40008 are 24 85, the
Stable weight no yes 1 conversion into binary gives the sequence of bits
100100 10000101.
Millivolt polarity + - 0 The digit at the right hand side matches with the
1st bit (Net weight polarity), therefore the values
Underload condition no yes 0 given in the above mentioned example are equi-
Overload condition no yes 0 valent to:

Off range condition no yes 0 Net weight polarity = 1 = negative

Gross weight polarity = 0 = positive
Preset tare condition no yes 1 Weight stability = 1 = yes
Input 1 status De-activated Activated 0 Millivolt polarity = 0 = positive
Underload condition = 0 = no
Input 2 status De-activated Activated 0 Overload condition = 0 = no
Relay output 1 status De-activated Activated 1 Off range condition = 0 = no
Preset tare condition = 1 = yes
Relay output 2 status De-activated Activated 0 Input 1 status = 0 = de-activated
Input 2 status = 0 = de-activated
Scale unloaded (*) no yes 0 Relay output 1 status = 1 = activated
Keyboard status Unlocked Locked 1 Relay output 2 status = 0 = de-activated
Scale unloaded = 0 = no
Keyboard status = 1 = locked

(*) The scale is considered unloaded (empty) when the weight value is within the “0 Band”
range (see “Table 2”, page 28)

List of the Input Registers (3x)

Modbus Description
Address
30003 A/D converter internal counts H
30004 A/D converter internal counts L
30005 Millivolt value
30006 Instrument software release
30007 Instrument “On-line” (*)

Modbus address 30007 = 00 01: the weight value is shown on the display. The instrument is “On-line”
Modbus address 30007 = 00 00: one of the error conditions (underload, overload, offrange) occurs, or any
programming procedure is underway. The instrument is “Off-line”.

List of the coils (0x)

Bit’s meaning
Modbus Description Range value Stored in
Address E2prom
0 1
00001 Logic output 1 De-activated Activated 1 bit NO
00002 Logic output 2 De-activated Activated 1 bit NO

40
 List of the functions “Command register”

Function Codes Description Function Command Stored in

Data Register E2prom
0001 (01 Hex) Semi-automatic zero - NO
0002 (02 Hex) Auto tare - NO
0003 (03 Hex) Peak reset - NO
0004 (04 Hex) Force net weight visualization - NO
0005 (05 Hex) Force gross weight visualization - NO
0016 (10 Hex) Zero calibration - YES
0017 (11 Hex) Full scale calibration Sample weight YES
0018 (12 Hex) Reset zero calibration - YES
0019 (13 Hex) Reset full scale calibration - YES
0032 (20 Hex) Back-up E2prom - YES

List of the functions “Status register”

Function Codes Description Function Status Stored in

Data Register E2prom
0000 (00 Hex) None of the functions are activated - NO
0003 (03 Hex) Analog output zero offset adjustment - YES
0004 (04 Hex) Analog output full scale offset adjustment - YES
0005 (05 Hex) Test input / output - NO
0006 (06 Hex) Test analog output Analog output NO
(0-64000)

For additional information regarding the Modbus protocol, please refer to the Modbus Protocol Manual PI-MBUS-300 Rev J.

41
 Transfer of a complete set-up configuration (Download - Upload)

With regard to the use of the InovationTM software, the Upload and Download functions represent an
alternative for configuring the instrument, and offers remarkable differences:

 The InovationTM software must be installed on a PC, while the Upload/Download procedures
do not require any software installation.

 The InovationTM software allows to configure the instrument (or to transfer an existing
configuration) from a PC, and parameters can be edited at any time prior to starting the
transfer process

 The Upload and Download functions allow to transfer the complete set-up configuration
from one instrument to another, passing through a PC, without enabling parameters
modification.
In this case, the instrument can send to a PC (download) or receive from a PC a text file (*.txt)
containing the configuration. Upload and/or Download can be managed through the use of any
PC application able to transfer text files: MS WindowsTM Hyper Terminal is an example.

Practically:
With the InovationTM software the PC is used to create a set-up configuration to be transferred
to an instrument.
With the Upload/Download procedures the PC is only used as a “bridge” (a tool) to transfer
the set-up configuration from an instrument to another one.

The advantages related to Upload and Download functions can be summed up as follows:

1. Quick parameter transfer from one instrument to another.

2. Saving of Zero and FS Calibration previously performed as Dead weight calibration. (*)
3. Use of Hyper Terminal (available on any PC with MS WindowsTM operating system) or
similar application, with no need of any dedicated software installation (required by the
InovationTM software).

(*)
While InovationTM software saves the theoretical calibration (Data-sheet) only, the Upload and
Download functions also save the actual Zero and FS Calibration previously performed as Dead
weight calibration.
In other words, a new instrument that must replace a faulty one will retain an identical behaviour if it
has received the configuration of the previously installed unit .

This function is very handy on those weighing equipments where both a new Zero and a new FS
calibration would be difficult or need the use of large volume sample masses, or worst, in case of a
tank filled with a product that cannot be emptied for some time, so that the Zero calibration cannot be
done.

How to prepare the instrument for configuration transfer:

common settings for dual procedures (Upload - Download):

1. Establish a serial connection DAT - PC.

Communication port to be used:
 RS232 (see wiring on page 27)
 RS485 (see wiring on page 27)

2. Access SERIAL menu (see page 19)

 Set “PROT-1” as “SLAVE” mode

 Back to main menu, select CONFIG. menu

42
DOWNLOAD (transfer of configuration from instrument to PC)
1. From the CONFIG menu, select “DNLOAD” and leave the instrument in this condition (the
instrument is now ready to transfer its own configuration to the PC).

Instrument’s display

DNLOAD

2. Open the Hyper Terminal application on your PC (Start - All Programs - Accessories -
Communications)
Assign any name to the “Connection description” and Click on OK.

3. At “Connect using”, select the serial port to be used for communicating with the DAT
(the example here below selects the PC’s COM1 serial port), then Click on OK.

43
4. Set the serial port communication parameters.
 Baud rate (Bits per second) and Data format (Data Bits, Parity, Stop Bits) must
correspond to those programmed in the DAT (check SERIAL menu on page 19)
 Select “Flow Control” = None).
 Click on “Apply”, then “OK”.

5. Click on “File”, “Properties”

Select “Settings” click on “ASCII Setup”

44
6. On the upper part of the screen (“ASCII Sending”):
 Enable “Send line ends with line feeds”
 Set “Line Delay” at 200 milliseconds

On the lower part of the screen (“ASCII Receiving”):

 Enable “Wrap lines that exceed terminal width”

Then click on OK two times (*) = 1st time - (**) = 2nd time

(*) (**)

7. Click on “Transfer”, then on “Capture Text…”.

Click on “Browse” to select destination directory and assign a name to the file incoming.
Click on “Start”

8. Press PRG key on the DAT to start data transfer to the PC.
When transfer is complete (lasting a few seconds), the instrument displays “DONE”.

Instrument’s display

DNLOAD PRG few secs. DONE

45
9. DAT configuration data received on PC will have this format:

10. Close the connection with a click on button (Disconnect) then close the Hyper
Terminal application using the X button on the upper right corner of the screen

11. Click on “Yes” when Hyper Terminal prompts the following:

12. In the destination directory previously decided at Section 7, a text file was created (and a
name assigned) containing the instrument’s configuration. The file can be open with the
Notepad application although the related data cannot be interpreted and most of all must
not be modified.

46
UPLOAD (transfer of configuration from PC to instrument)
13. From the CONFIG menu, select “UPLOAD” and leave the instrument in this condition (the
instrument is now ready to receive from the PC the text file containing the configuration ).
Instrument’s display

UPLOAD

14. Open the Hyper Terminal session on your PC, saved as in Section 11 (Start - All Programs -
Accessories - Communications). The session name is ABC in the following example.

15. Click on “Transfer”, then on “Send text file…”

16. Get the instrument ready to receive the text file from the PC by pressing the PRG key
(message on the display: “Receiv”)

Instrument’s display

UPLOAD PRG RECEIJ

17. Browse the directory previously decided at Section 7 and locate the text file to be transferred
to the instrument, a double-click on it will start the data tranfer process.
Upon receipt of file, the instrument automatically returns to CONFIG menu.

Instrument’s display

RECEIJ (data transfer) CONFIG

18. Close the Hyper Terminal application using X button on the upper right corner of the screen
then, click on “Yes” when the following message is prompted:

19. Press the “>0<” key on the instrument (message “STORE?”), then click on the PRG key.
The instrument will now operate according to the new configuration just received.

47
 Intrinsic Safety Barriers

SAFE AREA HAZARDOUS AREA

Model 400 / 450 PEPPERL & FUCHS Model CGS4

Digital / Analog Transmitter Intrinsic Safety Barriers Summing Junction Box

- Signal - Signal
8 Z961H 1
- Exc. 13 + Signal + Signal 1 - Sig + Exc 1
5 4 + Sig - Exc
+ Exc. 14 2 2
+ Sens 15 - Exc. - Exc. 3 - Exc + Sig 3
- Sens 16 6 3 4 - Sens - Sig 4
Z966H
- Sig. 17 + Exc. + Exc. 5 + Sens Shield 5
+ Sig. 18 5 4 6 + Exc
- Sense - Sense 7 Shield TB1
8 Z961H 1
+ Sense + Sense TB5 + Exc 1
5 4 - Exc 2
+ Sig 3

48
- Sig 4
Shield 5

TB2

FUNCTION BARRIER TYPE QTY 1 + Exc + Exc 1

2 - Exc - Exc 2
+/- Signal Z961H 1 3 + Sig + Sig 3
FUNCTION COLOR 4 - Sig - Sig 4
+/- Exc. Z966H 1 5 Shield Shield 5
+ Exc. Red
+/- Sense Z961H 1 TB4 TB3
+ Sense Orange

- Exc. Black

- Sense Yellow

+ Signal Green

- Signal White

Shield Bare
Options
Precise™
24 Volt Power Supply
Installation

 Make sure the installation complies with local regulations and electrical codes.
 Connect AC voltage to the terminals marked “L” and “N”.
 The DC voltage is available on the terminals marked “+” and “-”. The second set of terminals
are used when powering two transmitters from a single power supply (See notes).
 A red LED is illuminated when the power supply is “ON”.

Notes: The power supply should be used to power two transmitters only when a single load cell is
connected to each transmitter. For multiple load cell applications it is recommended that an
individual power supply be used for each transmitter. This enables the power supply to
compensate for any fluctuations in the incoming line voltage. Recent field experiences have
shown that voltage drops of greater than 10% can cause the transmitters to drift and become
unstable.

Fuse

L N LED + -
Mains in 24 Vdc

Fuse Replacement

The following procedures require work inside the power supply enclosure and should be performed
by qualified service personnel.

 Before opening the unit, disconnect the AC voltage.

 Remove the front cover from the power supply.
 Press down gently on the cover of the fuse holder, and turn counter-clockwise.
 Pull out the cover and fuse as an assembly, replace fuse with a new one.
 Re-install fuse and cover as an assembly, press down gently and turn clockwise.
 Replace the front cover on the power supply.
 Re-apply AC voltage to the unit.

In the event of a malfunction, please contact the nearest distributor for assistance.
Any attempt to modify or repair the power supply will void the manufacturers warranty.

49
 The USB connection between the DAT-400 and the PC

Introduction
The hardware module installed inside the DAT-400 and allowing the instrument to be interfaced with a PC
through the USB port, is named CP210x, manufactured by Silicon Laboratories.
The CP210x module needs the drivers to be installed in the PC when the connection to the DAT-400 is
established for the first time.

Virtual COM Port driver installation for Windows 2000 / XP / Server 2003 / Vista
Download the drivers from the Manufacturer’s web site using the following link:

http://www.silabs.com/tgwWebApp/public/web_content/products/Microcontrollers/USB/en/mcu_vcp.htm

 Mouse click on “VCP Driver Kit”, to start the download of the file named:
“CP210x_VCP_Win2K_XP_S2K3.exe” will start.

 Double mouse click on the icon of the file just downloaded to start the set-up wizard.

 Follow the set-up wizard until the installation is complete.

In some cases the system needs to be re-started in order to complete the installation process.

Running serial applications using the USB connection

Either the std. RS-232 COM port or the USB port can be used to handle the DAT-400 serial protocols, anyway
the USB port is almost never used in industrial environments, therefore we recommend using the USB port
only for configuring the instrument via the Inovation software.

Switch-on the DAT-400 and connect it to the PC using a std. USB cable, the message “Found new hardware”
appears on the PC screen, then a message advising that the new hardware is ready to be used will appear.

Please consider the following:

1. The PC operating system automatically assigns a COM port # to the USB adapter.
2. The Inovation software supports COM port #’s up to 6.

If the COM port # automatically assigned by the system to the USB adapter is < 6 the Inovation software can
be used immediately, otherwise it will be necessary to change the COM port # manually.

Perform the following steps to see (or to change) the COM port # assigned to the USB adapter:

Viewing or changing the COM port # assigned to the USB adapter

1. Right mouse click on “My Computer”, left mouse click on “Properties”, “Hardware”, “Device Manager”,
“Ports (COM & LPT)”.
2. The “Ports (COM & LPT)” list includes “CP210x USB to UART Bridge Controller (COM X)”. (“X” is the
COM port #). In order to avoid system conflicts make sure that no other devices are using the same
COM port #.
3. Bypass steps 4 to 7 only in case the COM port # has not to be changed.

4. Double mouse click on “CP210x USB to UART Bridge Controller (COM X)”.
5. Select “Port settings” then “Advanced”.
6. Open the “COM port number” popup menu and assign a COM port number 1 to 6.
7. Click on OK and come back to the “Ports (COM & LPT)” list.

8. Select “CP210x USB to UART Bridge Controller (COM X)”

9. Right mouse click on it.
10. Select “Scan for hardware changes”
11. Left mouse click on it.
12. Close the “Device Manager” application.

50