Machsupport Forum

Mach Discussion => Mach4 General Discussion => Topic started by: Bill Phillips on October 17, 2025, 11:37:28 AM

Title: M command not doing its job
Post by: Bill Phillips on October 17, 2025, 11:37:28 AM

I am brand new to Mach 4. I have been using a shopbot machine. I am now using an Avid machine. I am trying to set up a relay to start the vacuum table fans. The user guide says that M8 turns on relay 1 and M7 turns on relay 2. I put those M commands in the file but they don't turn on the receptacle under the control box.