With both CncPro and TurboCnc (I uses both) there is a option of stepping
on either the rising or falling of the step pulse. Having a miss match
between different axis has caused me grief in the past when using a
different controllers for a 4th axis.
Check your BIOS (re-boot and press del when prompted) Make sure that "
Legacy USB support" is OFF. This little wierdness is why I bought TurboCnc
for my second mill (a very very good program), CncPro just would not work
until I disabled the legacy stuff. Sometimes a failing CMOS battery will
cause a return to default settings.
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On 4/2/2006 at 9:47 PM Mark wrote:
>--- In email@example.com, "Jeff Demand" <jdemand@...> wrote:
>> I've had some very weird problems I've had in the past, not
>identical but I
>> sense a feeling of deja vu.
>> 1. Check the direction of the step pin (high to low or low to
>> correct for each driver.
>> 2. Try swapping computers, but keep the same machine .ini setups.
>> BIOS problems have caused me much lost hair.
>> PS: It doesn't strike me as a little VS big motor problem. Changing
>> DOES require a change in the driver board current settings. I
>> Xylotex drivers but one of my home brew drivers uses the same chip.
>> 3977 chips are very nice but really intolerant of noise (step/dir)
>> over voltage abuse. 270 oz in steppers is really walking the fine
>> between success and smoke. Talk to Jeff at Xylotex.com before you
>> anything with the hardware/drivers.
>I don't know what you mean about the step pin?
>Also, Xylotex ships with 270oz steppers - the unit I bought from
>somebody else has a Xylotex board, but had a couple of 116oz
>steppers, so upgrading to 2700z should be okay...
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Analog/Digital Modelling & Goldsmithing