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General Mach Discussion / Re: Mach/Gecko3x0/ speed limits ?

« on: June 12, 2006, 07:46:42 PM »

You are limited to a 45Khz Step rate and that works out to about 1300RPM of the servo motor. You say there is a 2" Dia pulley driving so that works out to about 408IPM if you have a 20 to one reduction and the resolution is about .000157 per step... I would think about getting 250 count encoders and you will not have to stress the software and computer as much

That will give you more IPM and the resolution will be about .000314 ish...

That was a nice break form the code

Hope it is a help!
Brian

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General Mach Discussion / Re: Auto tool height offset measurement

« on: June 12, 2006, 02:33:42 PM »

The Macro is simple

I will code one for you if you make the hardware

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General Mach Discussion / Re: Encoder feedback for Mach and Gecko 340 Drive

« on: June 12, 2006, 02:32:00 PM »

This can be done but Mach3 can only read at about 8KHz

The drive can do it MUCH faster than that! I have set machines up in the past to only send the encoder data to the Drive and have Mach3 looking at the fault sate of the drive (following error of 128 counts). The only other way to do this is with the Grex but the software for that is not done yet

Hope that helps
Brian

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General Mach Discussion / Re: Help for macro probe

« on: June 11, 2006, 06:50:19 PM »

There are many ways that you can use a probe... If you are going to use it to set up your tools and you know the height of the probe you could use a macro like this:

'Probe Macro
Code"G01"
Zpos = GetDRO(2)
Code"G31 Z" & Zpos - 4 &"f10"
while IsMoving()
Wend
Zpos = GetVar(2002)
Code"G01 Z" & Zpos + 1
While IsMoving()
Wend
Call SetDRO(2,1)

This will move the probe one inch above the probe and set the Zaxis to zero

There is also info in the wiki

That will give you a start and I am here if you need me.

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