Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: sircolin on April 23, 2022, 09:58:02 AM
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Hi
Have been using mach3 mill and lathe for a lot of years with Windows XP.
On changing to win 7 and above I cannot get the rpm readout to work on mach 3 turn.
Not concerned on the mill but need it to work on the lathe.
Any ideas gratefully appreciated
Colin
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What spindle sensor are you using and what is the debounce parameter set to?
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many thanks for your prompt reply
I am away at the moment.
have a magnet on the spindle with pickup that I made, not sure of the
debounce setting but did try a lot of different ones
will check when I get back
colin
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OK, assuming that the pickup is a Hall Effect device you shouldn't need much if any debounce. (On the other hand if it's a reed switch then I suggest you use a hall device instead!)
I've recently switched to using UC100 motion controllers on my lathe and mill, but more importantly replaced the lathe motor with 3 phase and VFD. Because this is much smoother I can now use the high speed range. I soon found the rpm reading didn't work on high speeds as the debounce was set too long. I just reduced it to something very short and the speed indicator works fine - so something to try? I use a slotted disc and opto interrupter, and essentially there's no bounce at all so no need to debounce.
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many thanks for that info John
it is hall effect that i used.
have not tried 0 debounce ,
have converted to vfd motor some time ago, had a few probs gearing it down
as it is a 1950s harris 11" swing lathe , keeps trashing the idler bearings as is too fast for them.
in the process of setting up a windows 7 computer, so will have another go when that is ready.
colin