Today, I found FlexLogix 5434, which has a new battery backup, faulted. Green LED at Local and Red LED at LOCAL2 were flashing. I used RSlogix5000 to online to find the fault's description. RSlogix5000 showed me the message: “ No program file in CPU”
I solved the problem by re-downloading the program to the CPU and it worked finally.
I would like to protect the PLC’s program lose in the future but I need to know the root causes firstly. Please anybody lists the possible causes that make PLC lose the program.
I solved the problem by re-downloading the program to the CPU and it worked finally.
I would like to protect the PLC’s program lose in the future but I need to know the root causes firstly. Please anybody lists the possible causes that make PLC lose the program.