Hi guys: I am trying to help someone on cnc zone to use M100 but I don't understand the manual desription nor can I find anything in the wiki to help. the manual says: To invoke a user-defined command, program M- P- Q- where P- and Q- are both optional. The external program “Mnnn” in the directory [DISPLAY]PROGRAM_PREFIX is executed with the P and Q values as its two arguments. Execution of the RS274NGC file pauses until the invoked program exits. Does this mean the external program must be named M100-199? What is meant by PROGRAM_PREFIX ? pathway? I assume the external program can be in any supported language or are we talking G code? Thanks Chris _________________________________________________________________
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