I have my CHNC lathe converted using 5i20 7i33 7i77 and all the wiring 
of the cards and my config files are here if you want to compare notes.

http://gnipsel.com/shop/hardinge/hardinge.xhtml

John

On 6/8/2012 8:39 PM, Brian May wrote:
> I am having trouble setting up threading on my lathe.  At this point I am
> thinking my spindle encoder is bad.  I have the following setup in my HAL
> File:
>
> net spindle-revs hm2_[HOSTMOT2](BOARD).0.encoder.01.position
> motion.spindle-revs
> net spindle-vel-fb scale.0.in motion.spindle-speed-in
> hm2_[HOSTMOT2](BOARD).0.encoder.01.velocity
> net spindle-index-enable hm2_[HOSTMOT2](BOARD).0.encoder.01.index-enable
> motion.spindle-index-enable
>
> My Parameters are set as follows:
>
> setp    hm2_[HOSTMOT2](BOARD).0.encoder.01.counter-mode 1
> setp    hm2_[HOSTMOT2](BOARD).0.encoder.01.filter 0
> setp    hm2_[HOSTMOT2](BOARD).0.encoder.01.index-invert 0
> setp    hm2_[HOSTMOT2](BOARD).0.encoder.01.index-mask 0
> setp    hm2_[HOSTMOT2](BOARD).0.encoder.01.index-mask-invert 0
> setp    hm2_[HOSTMOT2](BOARD).0.encoder.01.scale  1024
>
> For everything else, the spindle has been working fine.  I have been
> running in G96 spindle speed mode, the RPM that the encoder reads is
> perfect.  However, when I try and do a thread, the process never starts.
> The machine goes to the start point and just sits there and waits.  I am
> assuming it is waiting for an index pulse and never receives it.  From what
> I have read in the manuals - when the index pulse is found, the
> motion.spindle-revs goes to zero during a threading cycle.  On my machine
> this never happens.  It just continues to count.
>
> I ran my G-code in the lathe sim and it seems to work fine.  I am using a
> mesa 5i20 and a 7i33 daughter board.  The encoder is connected to the 7i33
> board.  The encoder is an automation direct TRD-N1024-RZVWD.
>
> Am I missing something simple?
>

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