Can't you just pull the battery and leave it for 1 hour?
I seem to remember that the FX's had a panasonic battery soldered in. I had to replace them on an annual basis, and that is how you had to replace them....quickly.
I've done it, but can'tremember it right now.... don't have a plc in front of me either....
But I think you have to be connect to a plc first (a choice you get when you are online)