ok .. he calls it "current sensing"
i post a quote .. excuse me mark for quoting you here without checking with you first
Quote
"Current sensing, used by Roland to indicate a MDX-15/20 limit has been reached, is a recognized method, but is widely thought to be a poor trade-off in performance for economy. If you do accept the trade-off, then the rough design of the stops is still ... ermmm ... stunning" and "When they collide, the stepper current goes skyward, the MDX electronics sense this and shut down the homing cycle. Then the MDX moves off the stop (a different Y amount by a matter of 4mm depending on whether it's acting as a mill or a scanner) and says to you "I'm in the VIEW position!" so you can then UNVIEW the unit and watch it go an exact distance to 0,0."
and this from Ken .. mwaaaaaahahahaahaha
Quote
"If I am understanding things right, are you saying the "faux limit switch" is actually two hard metal pieces that crash into each other and stall the motor out?
If so, why in the world didn't roland invest a few pennies into some cheap micro switches or even a few dollars into some proximity type switches to avoid homing and zeroing problems?"
so basically i went from a mill that crashes 2 plates into each other and registers a motor stall as a homing signal to a Minitech with 1 micron accurate Omron switches... you think im happy???
Betcha Ass I am!!
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