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Author Topic: Problem with creeping motor sitting still  (Read 2068 times)

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Problem with creeping motor sitting still
« on: April 27, 2010, 10:44:24 PM »
I have a 3 axis machine. On just the y axis if the machine is sitting still with the control box and computer running I get a little bump every few minutes in the y axis motor. It acccumulates to 1/4" of movement in about 45 min all by itself. Mach3 thinks it is still at home. This occurs even when mach is not running but will stop when I unplug the serial cable to the control box. Any Ideas?

Offline RICH

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Re: Problem with creeping motor sitting still
« Reply #1 on: April 27, 2010, 11:09:41 PM »
What do you have running which would access / check the PP every so often and send a signal out to the port?  ???
RICH

Offline stirling

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Re: Problem with creeping motor sitting still
« Reply #2 on: April 28, 2010, 05:13:37 AM »
I've had this with a Rainbow Tech Sentinel security dongle on a CAD package so I'm with RICH - either that or plain old noise.

Ian