Limit switchs

19 Feb 2020 15:24 #157862 by Clive S
Replied by Clive S on topic Limit switchs
The last one was a limit switch error this one is a following error.

I am not sure about this

sorry I can't help but Peter PCW will probably comment
The following user(s) said Thank You: jeffie-3

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19 Feb 2020 21:42 #157900 by jeffie-3
Replied by jeffie-3 on topic Limit switchs
I have been playing with the numbers. Still get the error. Anyone else have any ideas?

Thank you.

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28 Feb 2020 13:11 #158747 by andypugh
Replied by andypugh on topic Limit switchs
This isn't the issue but:
If you have encoders then you should definitely have HOME_USE_INDEX = YES
But that requires a few extra HAL connections between the encoder index-enable, the joint/axis pins and also the PID controller (so that it knows to ignore the step-change on index reset). This will give you 100% accurate homing.

If you look at the HAL, is the index-enable pin wired up? Can you see that toggle during homing (use Halscope[1] to watch it)

Try increasing the f-error limits temporarily, in case this is a genuine PID tuning issue.

Can you attach the HAL file?

[1] Halscope is a soft oscilloscope that will display the state of HAL pins. Its in the "Machine" menu in Axis. If the GUI you have doesn't have it easily accessible, then you can start it at a terminal prompt "halcmd loadusr halscope"

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22 Jan 2021 17:07 #196243 by jeffie-3
Replied by jeffie-3 on topic Limit switchs
Thank you. I have been away for a bit I am back and hoping to get this running.

"index-enable pin wired up?" Please explain. I'm not sure. A friend wired the machine. I am using 5i25 with a 7i77 cards.

I have opened the halscope. Would that be "hm2_5125.0.encoder.00.index-enable?

Here is the HAL file.

# Generated by PNCconf at Mon Jan 6 11:12:02 2020
# If you make changes to this file, they will be
# overwritten when you run PNCconf again

loadrt trivkins
loadrt [EMCMOT]EMCMOT servo_period_nsec=[EMCMOT]SERVO_PERIOD num_joints=[TRAJ]AXES
loadrt hostmot2
loadrt hm2_pci config=" num_encoders=3 num_pwmgens=0 num_stepgens=0 sserial_port_0=000xxx"
setp hm2_5i25.0.watchdog.timeout_ns 5000000
loadrt pid names=pid.x,pid.y,pid.z,pid.s
loadrt abs names=abs.spindle
loadrt lowpass names=lowpass.spindle

addf servo-thread
addf motion-command-handler servo-thread
addf motion-controller servo-thread
addf servo-thread
addf servo-thread
addf servo-thread
addf servo-thread
addf abs.spindle servo-thread
addf lowpass.spindle servo-thread
addf hm2_5i25.0.write servo-thread

# external output signals

# external input signals

# --- BOTH-HOME-X ---
net both-home-x <= hm2_5i25.0.7i77.0.0.input-00-not

# --- BOTH-HOME-Y ---
net both-home-y <= hm2_5i25.0.7i77.0.0.input-01-not

# --- MIN-HOME-Z ---
net min-home-z <= hm2_5i25.0.7i77.0.0.input-02-not

# --- MAX-Z ---
net max-z <= hm2_5i25.0.7i77.0.0.input-03-not

# --- ESTOP-EXT ---
net estop-ext <= hm2_5i25.0.7i77.0.0.input-04


setp pid.x.Pgain [AXIS_0]P
setp pid.x.Igain [AXIS_0]I
setp pid.x.Dgain [AXIS_0]D
setp pid.x.bias [AXIS_0]BIAS
setp pid.x.FF0 [AXIS_0]FF0
setp pid.x.FF1 [AXIS_0]FF1
setp pid.x.FF2 [AXIS_0]FF2
setp pid.x.deadband [AXIS_0]DEADBAND
setp pid.x.maxoutput [AXIS_0]MAX_OUTPUT
setp pid.x.error-previous-target true

net x-index-enable <=> pid.x.index-enable
net x-enable => pid.x.enable
net x-pos-cmd => pid.x.command
net x-vel-cmd => pid.x.command-deriv
net x-pos-fb =>
net x-output => pid.x.output

# ---PWM Generator signals/setup---

setp hm2_5i25.0.7i77.0.1.analogout0-scalemax [AXIS_0]OUTPUT_SCALE
setp hm2_5i25.0.7i77.0.1.analogout0-minlim [AXIS_0]OUTPUT_MIN_LIMIT
setp hm2_5i25.0.7i77.0.1.analogout0-maxlim [AXIS_0]OUTPUT_MAX_LIMIT

net x-output => hm2_5i25.0.7i77.0.1.analogout0
net x-pos-cmd axis.0.motor-pos-cmd
net x-enable axis.0.amp-enable-out
# enable _all_ sserial pwmgens
net x-enable hm2_5i25.0.7i77.0.1.analogena

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

setp hm2_5i25.0.encoder.00.counter-mode 0
setp hm2_5i25.0.encoder.00.filter 1
setp hm2_5i25.0.encoder.00.index-invert 0
setp hm2_5i25.0.encoder.00.index-mask 0
setp hm2_5i25.0.encoder.00.index-mask-invert 0
setp hm2_5i25.0.encoder.00.scale [AXIS_0]ENCODER_SCALE

net x-pos-fb <= hm2_5i25.0.encoder.00.position
net x-vel-fb <= hm2_5i25.0.encoder.00.velocity
net x-pos-fb => axis.0.motor-pos-fb
net x-index-enable axis.0.index-enable <=> hm2_5i25.0.encoder.00.index-enable
net x-pos-rawcounts <= hm2_5i25.0.encoder.00.rawcounts

# ---setup home / limit switch signals---

net both-home-x => axis.0.home-sw-in
net both-home-x => axis.0.neg-lim-sw-in
net both-home-x => axis.0.pos-lim-sw-in


setp pid.y.Pgain [AXIS_1]P
setp pid.y.Igain [AXIS_1]I
setp pid.y.Dgain [AXIS_1]D
setp pid.y.bias [AXIS_1]BIAS
setp pid.y.FF0 [AXIS_1]FF0
setp pid.y.FF1 [AXIS_1]FF1
setp pid.y.FF2 [AXIS_1]FF2
setp pid.y.deadband [AXIS_1]DEADBAND
setp pid.y.maxoutput [AXIS_1]MAX_OUTPUT
setp pid.y.error-previous-target true

net y-index-enable <=> pid.y.index-enable
net y-enable => pid.y.enable
net y-pos-cmd => pid.y.command
net y-vel-cmd => pid.y.command-deriv
net y-pos-fb =>
net y-output => pid.y.output

# ---PWM Generator signals/setup---

setp hm2_5i25.0.7i77.0.1.analogout1-scalemax [AXIS_1]OUTPUT_SCALE
setp hm2_5i25.0.7i77.0.1.analogout1-minlim [AXIS_1]OUTPUT_MIN_LIMIT
setp hm2_5i25.0.7i77.0.1.analogout1-maxlim [AXIS_1]OUTPUT_MAX_LIMIT

net y-output => hm2_5i25.0.7i77.0.1.analogout1
net y-pos-cmd axis.1.motor-pos-cmd
net y-enable axis.1.amp-enable-out

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

setp hm2_5i25.0.encoder.01.counter-mode 0
setp hm2_5i25.0.encoder.01.filter 1
setp hm2_5i25.0.encoder.01.index-invert 0
setp hm2_5i25.0.encoder.01.index-mask 0
setp hm2_5i25.0.encoder.01.index-mask-invert 0
setp hm2_5i25.0.encoder.01.scale [AXIS_1]ENCODER_SCALE

net y-pos-fb <= hm2_5i25.0.encoder.01.position
net y-vel-fb <= hm2_5i25.0.encoder.01.velocity
net y-pos-fb => axis.1.motor-pos-fb
net y-index-enable axis.1.index-enable <=> hm2_5i25.0.encoder.01.index-enable
net y-pos-rawcounts <= hm2_5i25.0.encoder.01.rawcounts

# ---setup home / limit switch signals---

net both-home-y => axis.1.home-sw-in
net both-home-y => axis.1.neg-lim-sw-in
net both-home-y => axis.1.pos-lim-sw-in


setp pid.z.Pgain [AXIS_2]P
setp pid.z.Igain [AXIS_2]I
setp pid.z.Dgain [AXIS_2]D
setp pid.z.bias [AXIS_2]BIAS
setp pid.z.FF0 [AXIS_2]FF0
setp pid.z.FF1 [AXIS_2]FF1
setp pid.z.FF2 [AXIS_2]FF2
setp pid.z.deadband [AXIS_2]DEADBAND
setp pid.z.maxoutput [AXIS_2]MAX_OUTPUT
setp pid.z.error-previous-target true

net z-index-enable <=> pid.z.index-enable
net z-enable => pid.z.enable
net z-pos-cmd => pid.z.command
net z-vel-cmd => pid.z.command-deriv
net z-pos-fb =>
net z-output => pid.z.output

# ---PWM Generator signals/setup---

setp hm2_5i25.0.7i77.0.1.analogout2-scalemax [AXIS_2]OUTPUT_SCALE
setp hm2_5i25.0.7i77.0.1.analogout2-minlim [AXIS_2]OUTPUT_MIN_LIMIT
setp hm2_5i25.0.7i77.0.1.analogout2-maxlim [AXIS_2]OUTPUT_MAX_LIMIT

net z-output => hm2_5i25.0.7i77.0.1.analogout2
net z-pos-cmd axis.2.motor-pos-cmd
net z-enable axis.2.amp-enable-out

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

setp hm2_5i25.0.encoder.02.counter-mode 0
setp hm2_5i25.0.encoder.02.filter 1
setp hm2_5i25.0.encoder.02.index-invert 0
setp hm2_5i25.0.encoder.02.index-mask 0
setp hm2_5i25.0.encoder.02.index-mask-invert 0
setp hm2_5i25.0.encoder.02.scale [AXIS_2]ENCODER_SCALE

net z-pos-fb <= hm2_5i25.0.encoder.02.position
net z-vel-fb <= hm2_5i25.0.encoder.02.velocity
net z-pos-fb => axis.2.motor-pos-fb
net z-index-enable axis.2.index-enable <=> hm2_5i25.0.encoder.02.index-enable
net z-pos-rawcounts <= hm2_5i25.0.encoder.02.rawcounts

# ---setup home / limit switch signals---

net min-home-z => axis.2.home-sw-in
net min-home-z => axis.2.neg-lim-sw-in
net max-z => axis.2.pos-lim-sw-in


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 => pid.s.command
net spindle-vel-fb-rpm =>
net spindle-output <= pid.s.output

# ---setup spindle control signals---

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

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

sets spindle-at-speed true

# connect miscellaneous signals

# ---HALUI signals---

net joint-select-a
net x-is-homed
net jog-x-pos
net jog-x-neg halui.jog.0.minus
net jog-x-analog halui.jog.0.analog
net joint-select-b
net y-is-homed
net jog-y-pos
net jog-y-neg halui.jog.1.minus
net jog-y-analog halui.jog.1.analog
net joint-select-c
net z-is-homed
net jog-z-pos
net jog-z-neg halui.jog.2.minus
net jog-z-analog halui.jog.2.analog
net jog-selected-pos
net jog-selected-neg halui.jog.selected.minus
net spindle-manual-cw halui.spindle.forward
net spindle-manual-ccw halui.spindle.reverse
net spindle-manual-stop halui.spindle.stop
net machine-is-on
net jog-speed halui.jog-speed
net MDI-mode

# ---coolant signals---

net coolant-mist <= iocontrol.0.coolant-mist
net coolant-flood <= iocontrol.0.coolant-flood

# ---probe signal---

net probe-in => motion.probe-input

# ---motion control signals---

net in-position <=
net machine-is-enabled <= motion.motion-enabled

# ---digital in / out signals---

# ---estop signals---

net estop-out <= iocontrol.0.user-enable-out
net estop-ext => iocontrol.0.emc-enable-in

# ---manual tool change signals---

loadusr -W hal_manualtoolchange
net tool-change-request iocontrol.0.tool-change => hal_manualtoolchange.change
net tool-change-confirmed iocontrol.0.tool-changed <= hal_manualtoolchange.changed
net tool-number iocontrol.0.tool-prep-number => hal_manualtoolchange.number
net tool-prepare-loopback iocontrol.0.tool-prepare => iocontrol.0.tool-prepared

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23 Jan 2021 21:43 #196363 by andypugh
Replied by andypugh on topic Limit switchs
Yes, I think you are set up for index homing except for the INI file entry saying "NO"

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