Strange things happening here in Maine!!!!

[Barefootboy4]

OK guys. Here is a weird one.
It's happened twice now. I run a program on my machine using Mach 3 all day no problem. I close out the program for the night. Next day I fire up Mach 3 and all three (3) axis are reversed!! Pos (+) direction is now neg (-) on all three axis. Whats up with that. I went in to Ports and Pins and fix the problem and the next day it reverts back to normal again by itself. Can someone please explain this one. I'm sure it's my fault but I have no idea what's up. Is it some kind of work offset issue I'm screwing up.

Thanks for the help up front because someone always comes thru.

[johnohara]

Two immediate possibilities come to mind:





Do you power down or hibernate the computer when you are finished?

Does disconnecting the parallel connection from the back of the computer change the problem?

Is the motor controller an H-Bridge?

Just some thoughts...

~John