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Author Topic: MPG Step size mystery  (Read 1617 times)

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Offline strud

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MPG Step size mystery
« on: October 14, 2013, 04:48:30 AM »
Hi All

I've only been playing with MACH3 for a short time now so please forgive me if this is documented somewhere I haven't found yet.

The problem I'm having is that the step size I get in step/velocity mode is independant of the step size set in the MPG jogging panel and seems to be 100x the resolution/min increment for that axis.

I've been unable to find anywhere that sets this multiple (x100) hence I'm confused.

The step or multistep modes work just as expected with the step size being that selected in the MPG step size box.


Is this adjustable ?

CS

Offline Hood

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Re: MPG Step size mystery
« Reply #1 on: October 14, 2013, 06:48:31 AM »
Step/Vel mode has never really worked properly and I dont think many people use it. I found the two modes of most use were Velocity and Multi Step.
Hood

Offline strud

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Re: MPG Step size mystery
« Reply #2 on: October 14, 2013, 07:33:25 AM »
Hi Hood

Unfortunately the step/velocity mode is more like an encoder following mode while the step/multistep mode performs individual steps with accel decel on each step making it very 'steppy'

Thanks for the respose !

CS

Offline Hood

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Re: MPG Step size mystery
« Reply #3 on: October 14, 2013, 07:43:16 AM »
The step velocity mode was meant to use step mode up to the transition velocity (user set if I recall) then it would change to Velocity mode. So at slow speeds it would act exactly as Multi Step mode does and when wound faster would change to Velocity mode. As said it never worked well.
 
The controllers I use (CSMIO/IP-A and IP-S) treat the MPG as per normal in Industry, ie x1 x10 x100 and that means each click is exactly the setting you are on. I think that Mach 4 will use that method as well.
Hood