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Topics - RodC

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1
I am converting mill that has a MN400 driver board to a parallel board.  Everything seems to be working great, however, I had to set the motors step signals to Active Low.  The board specifies Active Low.

The board I'm using is a DM8010

http://microkinetics.com/pdfmanuals/DM8010.pdf

From the manual:
Step input signal ............................................... TTL compatible positive edge trigger

And:
Step - used to step the motor. The stepping frequency range is from 0 to 300
KHz. The driver updates the motor position after a LO-to-HI transition
occurs. The minimum pulse width (LO level) should be 2uS

Should I worry or try to correct this.  TIA

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General Mach Discussion / G Code help - use spiral to cut a slot
« on: August 21, 2013, 09:48:32 AM »

I'm trying to create G code to cut a slot extending from an existing hole in a sheet metal part.  All the examples I have drive the cutter in an outline of the slot, then clean it out.  I would like to use a spiral cut and take about .010" off each pass to try and extend my tool life.  Imagine a bunch of holes milled as the machine moves the X.  For example I would like to create a slot using an .125" mill aprox 1" long and have a radius on the end of .250.  I would like to do this with aprox .250 radius cuts taking off .010 at a time moving X or Y.

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