Mitsubishi E70 CNC | How To know the M codes that my machine is able to execute?

Im trying to make a CNC machine enabble me to open the doors after a M00 function. Theoretically i would need another M function to do this, however the M36 does not apply because it have a mannually operated door with an automatic/safety feature that stops you from opening the doors while executing a programm.
the model of the cnc machine is a Bener Cosmos VLK-52 with a Mitsubishi E70 control pannel.