How do I use the distance measured by an encoder instead of stepper position?  Also is it different on an encoder for absolute versus relative?

Thanks.  Eddy

Can you expand on your questions? Not sure what your asking.

RICH

I am working on a system that will drill holes on a ribbon wire.  The wire is continuous in length and comes off a roll.  I plan on using a take up roll to advance the ribbon.  As the take up roll gets more wire on it the diameter will change so I have an encoder wheel that can measure the distance the ribbon travels.  The machine is basically a 2 axis (X and Z).  I will drill a hole then move 0.2" drill again and repeat every 2" down the ribbon.  I am thinking that I might need to do this through brains or c code.  Unless there is a better way.  Thanks for the input.  Eddy

I would make a separate drive to advance the ribbon wire threw a pair of rollers. I would make the drive roller an axis then program the advancement in gcode. Pretty much Failsafe.

(;-) TP