communication between PM571 and CP630 (RS232)
I'm sorry my English,
I have a problem, e don't know who to communication between PM571 and CP630. I use RS232, but console give me a error.
I tried every protocol or appear "!" Communication error ou "?" data not yet available.
What I am doing wrong.
Please i need help, it's for work and in Portugal ABB don't have support.
Voted best answer
For PM571 PLCs have built-in serial Modbus RTU protocol with RS-485 and RS232
And it is he same for CP630 operator panel.
You can use Modbus RTU protokol, define PLC as slave and Operator Panel as master. You need to define variable under "Global Variable" side and define same tags under Panel Builder software.
If your wiring is correct, there is no reason not to communicate these devices.
Also if you have ethernet ports for both devices, you can use Modbus TCP protocol.
Hope it helps you.