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Author Topic: $th axis not reversing  (Read 1624 times)

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$th axis not reversing
« on: April 24, 2014, 05:16:21 AM »
Hi guys,
Would appreciate some ideas on the following;-
I've got my 4th axis (rotational) almost completed on my mill and, apart from some minor (read stupid) mistakes, it seems to be working OK. Now the weird bit - when I'm setting up the axis in Mach3 the motor tuning is as normal - max speed, forward and reverse using up arrow and down arrow. Save settings, come out and move axis using keys set up in System Hotkeys (keypad - and keypad +). No problem for max speed with shift key held down - both forward and reverse just like in motor tuning but for slow jogging (without the shift key held down) the motor will turn one direction but not the other. In addition, after trying to reverse it at slow jog it seems to stop the entire jogging of all axis and I have to press the stop button to "reset" and allow jogging again.

Don't know what I've missed or if this is meant to be but it will make it very difficult to aligh the 4th axis if it will only slow jog one way. Any advice or input would be very welcome.