I am going to use two S7-200 to control a machine, I hope I can let the two PLC communicate through the RS485 PORTs instead using I/O modules to check outputs of each other. Can anyone give some suggestions?
I am going to use two S7-200 to control a machine, I hope I can let the two PLC communicate through the RS485 PORTs instead using I/O modules to check outputs of each other. Can anyone give some suggestions?