I have a PLC that has the "Energy storage OK" light out (pictured below). Is this a bug in the software, or does the energy storage module need to be replaced?
I've read through the manuals for the controller and I can't find a procedure to replace the ESM.
How long can a PLC typically be de-energized before draining the ESM?
I've read through the manuals for the controller and I can't find a procedure to replace the ESM.
How long can a PLC typically be de-energized before draining the ESM?