Quote Originally Posted by njhussey View Post
I've had a look into it and as you say you need to specify the different tools first i.e. T1=1, T2=2 and then It'll wait...if you just put M6 in there like an idiot that I am then of course it won't do anything as it doesn't see a different tool......
No if you insert it your self manually then it should still stop because Mach's STANDARD M6 macro doesn't Know or care about the tool number it just stops and waits for cycle start. Then enters the next tool number has the current tool in Mach's Tool DRO.

It doesn't do any checks to see if the current tool is same has the next tool so if you insert M6 before the next tool then even if that tool has the same number it will stop and wait. Then it enters this same number again, obviously on screen it looks like nothing changed because it's same number but it did still do the change.

It's the Cam post processor that leaves the M6 out if tools have the same number. So if it's missing M6 then it's because the tool change is turned off in General Config.