jdmotoomull
Member
Hi everyone.
I have a problem in my current project. I am using 4 ABB PLC PM-583 and plan to use Modbus to communicate and integrate them to my graphics. However, there seems to be a problem with my communication. I can communicate with each individual PLC through Codesys but when I use Modbus to communicate with each other, the communication terminates.
I have tried 1 to 1 communication with each PLC and use Modscan to verify my Modbus communication. But after 1 valid poll and response the Modbus communication terminates.
Can anybody shed any light on where I might have missed out?
Thanks!
I have a problem in my current project. I am using 4 ABB PLC PM-583 and plan to use Modbus to communicate and integrate them to my graphics. However, there seems to be a problem with my communication. I can communicate with each individual PLC through Codesys but when I use Modbus to communicate with each other, the communication terminates.
I have tried 1 to 1 communication with each PLC and use Modscan to verify my Modbus communication. But after 1 valid poll and response the Modbus communication terminates.
Can anybody shed any light on where I might have missed out?
Thanks!