In order for the remote on off switch to work we had to remove the sequencing module and set the jumper to the proper pins. We then connected a BNC to 9pinD cable to the Beckhoff interface. For EX Stuart A was able to switch the unit on and off with little trouble using a command line. The MEDM will follow. EY was not nearly as successful. After moving the jumper Stuart was able to turn the unit on but not off. After turning it on you could hear and audible sound as though a relay was continuing to switch. The unit would not turn off. I was able to operate the unit using my DVM set to continuity by touching the center pin and the shell. The ESD would turn On and OFF. Not sure if it is an ESD sequence module of the Beckhoff chassis. Will investigate further Tuesday.