I have a Sattcon35 plc and it won't go into run. I only have power supply, CU45 and SICB panel. I am able to login to the PLC and send a program, but when I try to start the PLC it stays in stop. Is there any way I can see why the PLC won't go to start? I tried with a program which runs in the factory on another PLC and I also tried with an empty program (just 1 PM which only has the BEGIN statement).