Quickstart Guide
ABB PLC and drives integration using Modbus RTU
Download program to PLC
Save the program and choose "Communication Parameters" from the "Online" menu. Set communication
Parameters according to your online connection. In the example below, the "Address" 192.168.0.10 corresponds
to the IP address of actual CPU and is also the default IP address of AC500 CPUs. Note that in case of Ethernet
connection, the IP address of your PC port or Ethernet adapter should belong to the same subnet as the CPU,
192.168.0.XXX (XXX between 1 and 255).
Choose "Login" from the "Online" menu and in the following pop‐up window, click "Yes". Then choose "Run" from
the "Online" menu to start the PLC. Check that the PLC goes to "RUN" mode in the PLC display or led.
Note! If the PLC does not go to "RUN" mode, you might have some PLC errors that you need to reset. You can do
that either by pressing the "DIAG" button on the PLC itself (not in the eCo series) followed by the "OK" button
until all errors are reset. You can also do it in online mode by using the "diagreset" command from the "PLC
Browser" in the CODESYS "Resources" tab.
Modbus RTU
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PLC and drives integration