Topics

1

General Mach Discussion / re reference after e stop/limit switch

« on: November 18, 2009, 12:50:02 AM »

I tried searching but no concrete answer. When any one of the three Viper drives E-stop the system, or hitting a limit switch, all three axes lose their green reference LED's then all three axes need to be re referenced. Why not just the one that screwed up??  P.S. Thanks again for a fantastic product as well as un-believeable support. The best! Wayne

2

Mach3 and G-Rex / Mach3 setup YCM-40 Supermax campbell viper200 motor tuning questions

« on: October 14, 2009, 11:29:37 PM »

On the X,Y,and Z axes on My YCM-40 Supermax, there are three different results of the encoder readings per inch of travel. I'm using US Digital 1000 line encoders and the step multiplier is jumpered at 4 on the vipers. These figures are directly out of the Viper200's motor position output through the serial port on Windows Hyperterminal.
1" of travel on X axes =Hex reading from 0 to 757F  (which is 30079  in decimal numbers)
1" of travel on Y axes =from 0 to 8B02  which is 35586
and 1" of travel on Z axes =from 0 to 6387 which is 25479
How do I do the math to know what to enter as the "steps/inch"?   Do servo motors actually have "steps"? or is it dependent on the encoder resolution? Also on a side note, does anybody has a clue as to how to get the Viper200's to trigger an e-stop through the EPO terminal to Mach? I am seriously perplexed as to how to wire the entire EPO/E-Stop system. Any schematics would be greatly appreciated as I can deal with that!
I would be so relieved to bring this conversion to an end and get to machining!  Wayne