Writing a custom M code?

[greeder88]

I have a Delta 20 control with a pic card and want to make a custom M code to turn on and off some relays. I have 4 unused slots on my relay board.

I found the Integration manual with 3 columns of numbers and a description column so this should be fairly easy if I knew how these numbers are used.

My manual shows how to get to the M code addresses to edit but not sure what I can do once I get in there?

[jagardner4]

If the PIC is being used to run the machine inputs/outputs, then M codes will be sent to the PIC program for decoding via the CNC to PIC table. To use a custom M code under these circumstances, the PIC would have to be programmed to recognize the custom M code and turn on the desired output.

What kind of machine is this? Manufacturer and model number would be helpful. Do you have the PIC "Source" file?