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641  Mach Discussion / FAQs / Re: Losing steps or something? on: September 21, 2010, 02:17:59 AM
This is a strange one... you're only seeing it when both X and Y are moving...? Is it absolutely repeatable and consistent on both axes? Or it randomly appears on either one of them?

May be the breakout board is under powered? Try using a different power supply with higher current rating.

Dan
642  Mach Discussion / General Mach Discussion / Re: Wanted: Position X & Y at the Center of a Hole Macro on: September 21, 2010, 02:12:59 AM
If you need accuracy, I'd use a dial indicator held in the spindle chuck.

Dan
643  G-Code, CAD, and CAM / G-Code, CAD, and CAM discussions / Re: is there a name for this kind of cut on: September 21, 2010, 02:10:13 AM
I and J can never be BOTH zero. Unless, of course, you're using the R word to define the radius, and then I and J are not used.

Dan
644  Mach Discussion / General Mach Discussion / Re: Save Fixture?? on: September 19, 2010, 03:04:09 PM
It is asking you if you want to save the work offset(probably the default G54 )


FWIW, Mach saves all the offsets, not just the default G54.

Dan
645  Mach Discussion / General Mach Discussion / Re: Parallel Port Voltage on: September 19, 2010, 07:59:53 AM
Yes, James. As far as I remember, this is what Sherline mode does - increases the pulse width. It shouldn't change the kernel frequency.

Dan
646  Mach Discussion / General Mach Discussion / Re: Parallel Port Voltage on: September 19, 2010, 01:07:30 AM
Hi James,

Are you measuring the voltage on the step pin? If so, the reading of the voltmeter doesn't reflect the actual wave voltage. Since it is a square wave and the voltmeter reading would depend on it's frequency. So the 0.1V or 0.35V you're seeing are absolutely meaningless in determining the wave high and low voltages.

If it works for you in Sherline mode, then just leave it this way. Sherline mode outputs wider pulses, so appears like that is what your drive needs.

Dan
647  Mach Discussion / Mach SDK plugin questions and answers. / Re: Jog buttons in Mach3 on: September 18, 2010, 01:20:37 PM
Glad you got it figured, Eugene.

Dan
648  Mach Discussion / Mach SDK plugin questions and answers. / Re: Jog buttons in Mach3 on: September 17, 2010, 06:33:00 AM
Hi Eugene,

In the hotkeys window you click on the desired axis direction (X++, X--, etc.) and it will ask you to press a key. This will be the key associated with jog in that direction.

Dan
649  Mach Discussion / General Mach Discussion / Re: Losing Steps? on: September 17, 2010, 04:34:06 AM
Are you using a breakout board? If it has optos, they might be slow or have a bad timing for outputting the direction change pulse. Trying to connect the PP directly to the drives will show if the problem is in the breakout board.

Try checking the Active Low for the step pulse.

If it's a consistent lose of steps and only in one direction, then I'd doubt it has something to do with shielding.

Dan
650  Mach Discussion / Mach SDK plugin questions and answers. / Re: Jog buttons in Mach3 on: September 17, 2010, 04:11:20 AM
Hi Eugene,

There is a convention that you treat the tool as being moved. So the direction is the tool travelling direction regarding the table. It's not wise to change it, but since you asked you can define whatever keys for jogging under Config -> Hotkeys.

Dan
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