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SmoothStepper USB / Losing lots of Steps
« on: April 17, 2009, 12:16:33 PM »
Hi all :-)
We changed our Milling-PC from a T40p Notebook with WinPC-NC to an Asus eee-Top with Touchscreen (cool device ;-)) and SmoothStepper and Mach3.
With WinPC-NC we lost some steps, maybe some hundred when it runs several hours without homing. To avoid that, we bought Mach3, a new PC, Smoothstepper and everything, set the values for Motortuning about to the same values as in WinPC-NC (sounds same, looks same, values somewhat also the same, with very very long ramps).
And guess what, with exactly the same G-Code we lose about 3 times more steps! (some millimeters!!!).
How did i know that steps were lost? .. because of a reference homing between two milling cycles. (and i measured the homing also with a dial gauge and a repeatability of about +/-0.015mm)
Are there any settings which can affect this?
Please help!
(btw.. we have a VK-Technik PA-6040 Mill)
We changed our Milling-PC from a T40p Notebook with WinPC-NC to an Asus eee-Top with Touchscreen (cool device ;-)) and SmoothStepper and Mach3.
With WinPC-NC we lost some steps, maybe some hundred when it runs several hours without homing. To avoid that, we bought Mach3, a new PC, Smoothstepper and everything, set the values for Motortuning about to the same values as in WinPC-NC (sounds same, looks same, values somewhat also the same, with very very long ramps).
And guess what, with exactly the same G-Code we lose about 3 times more steps! (some millimeters!!!).
How did i know that steps were lost? .. because of a reference homing between two milling cycles. (and i measured the homing also with a dial gauge and a repeatability of about +/-0.015mm)
Are there any settings which can affect this?
Please help!
(btw.. we have a VK-Technik PA-6040 Mill)
