G33.1 - no position reset when index detects

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04 Jan 2020 14:21 #153990 by Cynas
Hi, I'm trying to run rigid tapping g33.1 but I've found a problem.

All readings in Hal Meter and Hal Scope are only correct when starting the G33.1 cycle the position counter does not reset.

After starting G33.1, it waits for the index signal and receives it, and then quickly moves down the distance (position * thread pitch).
motion.spindle-revs       increases by 1 for one spindle revolution

the index signal receives from the hall sensor

my hal:
#*******************
#  SPINDLE S
#*******************

setp   pid.s.Pgain     [SPINDLE_9]P
setp   pid.s.Igain     [SPINDLE_9]I
setp   pid.s.Dgain     [SPINDLE_9]D
setp   pid.s.bias      [SPINDLE_9]BIAS
setp   pid.s.FF0       [SPINDLE_9]FF0
setp   pid.s.FF1       [SPINDLE_9]FF1
setp   pid.s.FF2       [SPINDLE_9]FF2
setp   pid.s.deadband  [SPINDLE_9]DEADBAND
setp   pid.s.maxoutput [SPINDLE_9]MAX_OUTPUT
setp   pid.s.error-previous-target true

net spindle-index-enable  <=> pid.s.index-enable
net spindle-enable        =>  pid.s.enable
net spindle-vel-cmd-rpm-abs     => pid.s.command
net spindle-vel-fb-rpm-abs      => pid.s.feedback
net spindle-output        <=  pid.s.output

# ---digital potentionmeter output signals/setup---

setp   hm2_7i76e.0.7i76.0.0.spinout-minlim    [SPINDLE_9]OUTPUT_MIN_LIMIT
setp   hm2_7i76e.0.7i76.0.0.spinout-maxlim    [SPINDLE_9]OUTPUT_MAX_LIMIT
setp   hm2_7i76e.0.7i76.0.0.spinout-scalemax  [SPINDLE_9]OUTPUT_SCALE

net spindle-output      => hm2_7i76e.0.7i76.0.0.spinout
#net spindle-enable      => hm2_7i76e.0.7i76.0.0.spinena

net spindle-enable => or2.0.in0
net spindle-enable-oriented => or2.0.in1

net spindle-enable-or2.0 or2.0.out      => timedelay.1.in
net opoznienie-spindle-enable timedelay.1.out => hm2_7i76e.0.7i76.0.0.spinena

net spindle-ccw         => hm2_7i76e.0.7i76.0.0.spindir



# ---Encoder feedback signals/setup---

#setp    hm2_7i76e.0.encoder.00.counter-mode 0
setp    hm2_7i76e.0.encoder.00.counter-mode 1
setp    hm2_7i76e.0.encoder.00.filter 1
setp    hm2_7i76e.0.encoder.00.index-invert 1
setp    hm2_7i76e.0.encoder.00.index-mask 0
setp    hm2_7i76e.0.encoder.00.index-mask-invert 0
setp    hm2_7i76e.0.encoder.00.scale  [SPINDLE_9]ENCODER_SCALE

net spindle-revs             <=   hm2_7i76e.0.encoder.00.position
net spindle-vel-fb-rps       <=   hm2_7i76e.0.encoder.00.velocity
#net spindle-index-enable     <=>  hm2_7i76e.0.encoder.00.index-enable


# ---setup spindle control signals---

net spindle-speed-cmd-rps      <=  motion.spindle-speed-cmd-rps

net spindle-vel-cmd-rps        <=  motion.spindle-speed-out-rps
net spindle-vel-cmd-rps-abs    <=  motion.spindle-speed-out-rps-abs
net spindle-vel-cmd-rpm        <=  motion.spindle-speed-out
net spindle-vel-cmd-rpm-abs    <=  motion.spindle-speed-out-abs
net spindle-enable             <=  motion.spindle-on
net spindle-cw                 <=  motion.spindle-forward
net spindle-ccw                <=  motion.spindle-reverse
net spindle-brake              <=  motion.spindle-brake
net spindle-revs               =>  motion.spindle-revs
net spindle-at-speed           =>  motion.spindle-at-speed
net spindle-vel-fb-rps         =>  motion.spindle-speed-in
#net spindle-index-enable      <=>  motion.spindle-index-enable

net spindle-index-enable encoder.0.index-enable <=>  motion.spindle-index-enable
net spindle-index encoder.0.phase-Z
net spindle-index hm2_7i76e.0.7i76.0.0.input-12-not

net spindle-orient 		<= motion.spindle-orient
net spindle-is-oriented 	=> motion.spindle-is-oriented
net spindle-locked 		<= motion.spindle-locked

# ---Setup spindle at speed signals---

sets spindle-at-speed true

my ini:
ENCODER_SCALE = -1000

The same problem occurs when using g76

It looks like the Z movement is trying to catch up with the position of the spindle, which is being added all the time. After starting g33.1 it can still have a very high value.

Did I miss something in the configuration or maybe my thinking is wrong?

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04 Jan 2020 15:07 #153993 by PCW
For the hardware index to work, the index signal must connect to the encoder input on the 7I76E.
The following user(s) said Thank You: Cynas

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04 Jan 2020 15:13 - 04 Jan 2020 15:23 #153995 by Cynas
How can I make such a connection in the hal ?
Last edit: 04 Jan 2020 15:23 by Cynas.

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04 Jan 2020 15:20 #153996 by PCW
It has to be done in hardware, not hal, that is, you must connect the index signal to the 7I76E's index input

This can be done in hal with a software encoder counter but a software encoder will not work well with a 1000 count/turn encoder

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04 Jan 2020 15:23 #153997 by Cynas
If I use a 5V encoder for A, B signals. Can I connect a 24 V sensor output in place of the Index?

Do I have to use a transition system that converts 24V to 5V?

I don't see this information anywhere in manual 7i76E

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04 Jan 2020 15:32 #153998 by PCW
You would need to translate the voltage from the sensor to 5V
(voltages in excess of 12V will damage the 7I76E encoder inputs)

This translation could be done with an opto-coupler or similar device
The following user(s) said Thank You: Cynas

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04 Jan 2020 15:37 #153999 by Cynas
I will try to build such a system

Thank you

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04 Jan 2020 20:23 #154018 by Cynas
I made a simple circuit with an optocoupler.
On the table works, when there will be a moment of free time, check it on the machine.





Thank you again
Attachments:

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08 Jan 2020 15:11 #154312 by Cynas
One picture expresses more than 1000 words :)

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08 Jan 2020 17:34 #154326 by Clive S
Very nice.
Would you mind posting your config files.

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