I am posting for the first time here, so please bear with me. I have been searching this and other forums for this particular problem, and although there is a similar topic earlier, there has been no suggestion of an answer.
Anyway, I've just finished setting up a 3040 Router (the Chinese version) with Mach3 and after a rather shakey start, I'm now at the stage where the X and Y motors are running sweetly; but not the Z axis.
It will only run in one direction regardless of which key is pressed.
I have swapped the pin allocation in Mach3-Config from either X or Y to Z and the same effect happens on that axis.
ie, if 2 & 3 are used for X and 4 & 5 are used for Y, leaving 6 & 7 for Z; I swap 2 & 3 with 6 & 7 - the single direction then applies to this 'new' axis.
This suggests that the signals from the PC are not getting through?
I've looked at the Config pages dozens of times, but nothing is leaping out that is obviously wrong. I've allocated different keys just to the Z axis, with the same single direction.
Has anyone had the same or similar problem with this?