Serial control of runco cw50-mc

Is it possible to turn on and off a runco cw-50 using rs232?

The model shows as having an RS232 port. If you check the manufacturer, they may have a protocol document for that model in which case there is every reason to believe that should be controllable as a custom device.

would that be the mxf file?
if so, how do I proceed?

By protocol document, we mean a document that describes the protocol you’re trying to match.