Hi
I'm hoping to get some idea of how to trouble shoot this problem.
I've replaced my old pc with a windows 7 pc and a UC100, everything seemed to be ok but I didn't test the A axis (rotary table) until now.
I've checked the pinouts, enable etc and they all look right and match the old pc.
I've reconnected the old pc and the A axis works as before.
My main XYZ axis use Routoutcnc opto isolated 10 amp drivers
http://www.routoutcnc.com/10ampkits.htmlThe A axiz uses a different driver but it's litriture says it's opto isolated
http://www.arceurotrade.co.uk/Catalogue/Stepper-Motors/Stepper-DriversMy breakout board is just the pass through one from routoutcnc shown in the first link and doesn't have opto isolation. I don't have a seperate 5vdc supply in my controller box either, that all came from the parallel port.
I'm wondering if the 5vdc from the UC100 isn't enough to drive the stepper driver from arceurotrade or if there is an earth missing that is on the parallel port.
Everything else seems to work as expected, the homing switches and e stop signal all work with no problem, and typically the first job I want to do with the new pc/UC100 combo uses the rotary table!
Does anyone have any ideas? I have this feeling I'm missing something obvious.
Steve