compactlogix losing program after power recycle


Thread Starter



I have a conveyor system controlled by compactlogix L23E. every time I recycled the power on the system the processor lost the program and I need to download the program, then everything is fine. I already check the battery and its working fine.

anyone can help pls,


Bob Peterson

To some extent it matters what you mean by "lost the program".

Does it go to the default state?

Or an earlier version of the program?

Does it have an SD card?

These things can be configured so that the version of the program stored on the SD card is always loaded on power-up.

Is this some kind of new behavior?