i have a relay i would like to add, but don't know how to do it (program part). when the g code is done running i won't a relay to open (when it's running it closed) so that it well shunt the power to the cnc down (kind of like i walked away and fallen a sleep and i what it to turn off when it done) i know how to wire it, just don't know how to tell mack 3 to do this. sorry for the odd question but i'm an electrican and this stuff is fun to me.
thank you
kevin