I've been asked to look into a Siemens S5 problem. The PLC seems to have lost its program and I have a copy on EEProm but I don't know if when I plug the EEProm into the cpu and select copy if it will copy to the EEProm or from the EEProm to the cpu. We have no manuals for this and no paper copies of the ladder logic so I don't want to try copying unless I'm sure its going the right way.