Hardware manual

Modbus TCP/IP Client Tester Impact Reference Guide
Datalogic Automation Inc. 6-28
Modbus TCP/IP Client Tester
The Modbus Client Tester is used to send function codes and data to the Modbus Server on the Impact
device for testing.
To launch the Modbus Client Tester
1. Start VPM
2. Select the Settings Tab - General - Diagnostics panel.
3. Click the Advanced button.
4. Select Modbus Client.
5. Click Launch
Field or Button Purpose
IP Address The IP address of the Impact device you want to test
Lookup Click this to display the Impact device connect dialog
Port The standard Modbus communication port is 502
Function Code The desired operation - read or write
Start Address The starting register for the selected function (the first register is
number zero)
Count How many registers to read or write
Send Click this to execute the function
Registers The Modbus Server registers; For a write function, enter the value
you want to send to the device. For a read function, this is the
value read from the device