On Wed, 1 Oct 2014, John Alexander Stewart wrote:
Date: Wed, 1 Oct 2014 22:14:16 -0400
From: John Alexander Stewart ivatt...@gmail.com
Reply-To: Enhanced Machine Controller (EMC)
emc-users@lists.sourceforge.net
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Subject: [Emc-users] Another 5i25-7i76 question - spindle encoder this time.
My 7i76 mill is working very well.
The last setup before I put everything in its place is to get Andy Pugh's
automatic spindle software gearing to work.
I have a spindle encoder, that is not-differential, and does not have an
index. 16 pulses per rev.
I have it wired such that the 3 jumpers (W4, W5, W6) are in the left hand
position (closest to the 25 pin connector), and a wire goes to the ENCA+,
TB3, pin 7. This should put it in TTL mode, with the pulse train going to
ENCA+.
Between pin 7 and pin 1 (gnd) when spinning the spindle manually, I get
between 0.8v and 5.65v on my digital voltmeter.
Input power, 7i76 manual, page 49, says Input Common Mode Range -7 to +12
volts. Input TTL threshold is 1.4 to 1.8v.
I HAVE NOT connected (or jumpered) any other input wires for this encoder -
they are left floating.
The encoder.00.counter-mode is set to 1
encoder.00.filter set to 1
encoder.00.index-invert set to 0, index-mask-invert to 0, latch-enable to 0
encoder.00.scale set to 16
I see nothing - no counts, no action on the input.
I also don't have much luck googling this stuff - maybe I need to practice
more.
Does the above look reasonable? Should I jumper the ENCB, IDX, lines
somewhere?
Yours confusingly,
John A. Stewart.
This sounds familiar, can you check the the countermode is indeed set true?
I think pncconf sets the counter mode it two places so you think you have
counter mode set true but its not...
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