PLC_4_Ray
Member
Hi everyone, I have an AB 1747-L20B PLC that has a CPU fault, I am trying to connect to it with RSLogix 500 Pro to see what the fault is and to hopefully clear it so I can use it. I am using a 1747-PIC to connect. The battery is good. I have tried with and without a null modem. I am out of ideas, any help will be much appreciated, thank you.