Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: Beyaz balina on November 01, 2008, 07:56:16 AM
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Im am a newbee
I have electronic encoder with 1000 timing pulses and a index pulse connected to my lathe spindle
i connected 5 v to 5v, massa to massa, index pulse to pin 15 timing pulse to 13
I see on my breakoutboard the led when i hit the index point en flashing when the spindle turns
But i see nothing in the True spindle speed DRO's now and then i see a value and after 1 second i go's back to 0
What do i wrong is there some other parameter i have to alter
With friendly greetings
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The index pulse from an encoder is more than likely too short a duration to be picked up over the parallel port.
Hood
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Thank you for the quick response
I use this configuration in a former program called PCdreh and that is also working with the parallel port and there it working well
i thought that i need this also for threading but than i have to use the timing pulse
I did not try to make a treading but i think there will be problems also what is the best sensor i can use with mach3
greetings Gerard
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You should use the Index Input if its a single pulse per rev. For the timing input you need several pulses per rev and one has to be longer than the other.
Hood
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Here is a clip from the manual....found under Support/Documentation at the top of this page.
RC
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Gerard,
Take a look in Mach III Turn manual page 4-12. It gives info about the spin index pulse.
Threading has come a long way / been fixed in the latest development version and spindle readout
works better than ever ( for me anyway using a single slot ).
Backlash in your lathe axis's dosn't provide for good threading. Just thought i would mention that.
RICH