Never simple is it! Mach, machine halts

[Shinobiwan]

No saying if it was G90.1 leave it and change the I/J mode in general Config to Absolute. Then vise versa if your code uses g91.1 and it' doesn't do what you expect then just change I/J Mode to Incremental.

Also doesn't matter whether using Conventional or climb milling you still want spindle spinning clockwise and M4 spins it Anti clockwise if connected.
Like I say I'd sort it now because one day it could bite if you ever decide to connect spindle for both directions.?

Ahh I see your point. Its a problem with the post I'm using but I've edited to switch around the M3 and M4 commands and it now works as expected producing M3 instead of M4. Why would you use M4 anyway? I take it there are mills out there that are CCW or is this some special case?

Also how do I set my dwell time? The spindle take a few seconds to get up to speed and Mach is wanting to get going before its ready. Could be problem if its trying to cut whilst still spinning up.