Dear Friends
I have two Omron PLCs CJ1M-CPU22 installed in two different units of machine. I use to go online with these PLCs through a cable CS1W-CN226. now I tried many time to go online with my PC but an error message generates “Failed to open communications with PLC. The device may be busy”
Please help what to do.
I have two Omron PLCs CJ1M-CPU22 installed in two different units of machine. I use to go online with these PLCs through a cable CS1W-CN226. now I tried many time to go online with my PC but an error message generates “Failed to open communications with PLC. The device may be busy”
Please help what to do.