Mach3 Spins Motor Same Way No Matter What

[aus10eww]

My homemade machine was working fine and then all of a sudden the z axis wont changed directions when jogged. nothing in the wiring or hardware changed so im guessing it is something to do with mach3. any help would be wonderful.

Thanks

[ger21]

Measure the voltage at the direction pin when jogging in both directions. It should be 0V in one direction, and 5V the other.

[aus10eww]

Im not sure if I fixed the problem but i got around it. When I first start up the machine the z still moves in the same direction, but if i go into outputs and switch the pins of the z axis to 6 and 7 and then back to 4 and 5.

It doesn't really bother me to do this but i would rather have it work correctly.

Any ideas?