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Spindel problems in Gmoccapy

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27 Apr 2017 12:48 #92200 by tecno
Spindel problems in Gmoccapy was created by tecno
Have now my lathe running OK in Axis.

In Gmoccapy I can not start the spindle, works OK in Axis.


Obviously I have something set wrong but what can that be, spindle starts at 200rpm in Axis.

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27 Apr 2017 13:27 #92207 by rodw
Replied by rodw on topic Spindel problems in Gmoccapy
I don't have a spindle so can't help much. I think there are some .ini file settings that need to be set up as I see some warnings in the terminal window when I start Linuxcnc from the command line. Have a read here:
linuxcnc.org/docs/html/gui/gmoccapy.html#_basic_configuration

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27 Apr 2017 15:46 - 27 Apr 2017 16:46 #92222 by tecno
Replied by tecno on topic Spindel problems in Gmoccapy
Found the problem that is the slider was locked far left and only restart solved this so now I can command the spindle.


slider far left was locked

But, still no visual rpm display. Copied TURBO and his solution

I mean i just got the gmoccapy spindle meter and led working.

In the ini hal section I added

# Single file that is executed after the GUI has started.
POSTGUI_HALFILE = custom_postgui.hal

in custom_postgui.hal

net spindle-fb-rpm-abs-filtered => gmoccapy.spindle_feedback_bar
net spindle-at-speed => gmoccapy.spindle_at_speed_led


So how can I get some rpm feedback having only INDEX pulse on spindle shaft.

Cheers
Bengt
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Last edit: 27 Apr 2017 16:46 by tecno.

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27 Apr 2017 18:09 #92228 by newbynobi
Replied by newbynobi on topic Spindel problems in Gmoccapy
Here is a simple spindle connection I use for a small machine:
##########################################################
# Spindeldrehzahl messen / mesurement spindle revolution #
##########################################################

loadrt encoder num_chan=1
addf encoder.update-counters   base-thread
addf encoder.capture-position  servo-thread

setp encoder.1.position-scale 1      # Anzahl der Impulse je Umdrehung
setp encoder.1.counter-mode 1        # Wenn 1 gesetzt, wird B-Signal ignoriert

# disable 4 times encoder, otherwise each klick will ingreas jogwheel-count by 4 instead of 1
# 4-fach-Auswertung vom Encoder ausschalten, sonst wird jogwheel-count bei jedem Klick um 4 statt um 1 erhoeht
setp encoder.0.x4-mode FALSE

loadrt scale count=1                 # Wird gebraucht, um U/Sekunde in U/min umzurechnen
addf scale.0 servo-thread
setp scale.0.gain 60                 # Ausgang = 60 x Eingang

net spindle_index parport.1.pin-12-in => encoder.1.phase-A => encoder.1.phase-Z

net spindle-index-enable motion.spindle-index-enable <=> encoder.1.index-enable
net spindle-rps encoder.1.velocity => scale.0.in
net spindle-rpm scale.0.out

# Zum Erkennen ob Geschwindigkeit erreicht wurde
# For at Speed detection
loadrt near
addf near.0 servo-thread
# Stellt fest ob zwei Werte in etwa gleich sind
# Wahr wenn, in1/scale <= in2 <= in1*scale
# oder wenn |in1-in2| <= difference
# prooves if two values are roughly the same
# true  if  in1/scale <= in2 <= in1*scale
# OR |in1-in2| <= difference

setp near.0.scale 1.2
setp near.0.difference 10
net spindle-cmd => near.0.in1	
#	net spindle-revs motion.spindle-revs => near.0.in1
net spindle-rpm => near.0.in2
net spindle-at-speed near.0.out => motion.spindle-at-speed

After that spindle-rpm must be connected in postgui.hal to gmoccapy.spindle_feedback_bar

May be you need to pass the signal through an ABS to get positive values.

Hope that helps.

Norbert

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27 Apr 2017 18:25 #92229 by tecno
Replied by tecno on topic Spindel problems in Gmoccapy
Thank you Norbert,
will give this a try tomorrow.

mfg
Bengt

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28 Apr 2017 10:21 #92253 by tecno
Replied by tecno on topic Spindel problems in Gmoccapy
Can somebody clarify the code from Norbert. I have only 1 par port = 0 and only index pulse on pin 10

What lines should be edited to suit above as I get nowhere with the code as-is.

Cheers
bengt

Here is a simple spindle connection I use for a small machine:
##########################################################
# Spindeldrehzahl messen / mesurement spindle revolution #
##########################################################

loadrt encoder num_chan=1
addf encoder.update-counters   base-thread
addf encoder.capture-position  servo-thread

setp encoder.1.position-scale 1      # Anzahl der Impulse je Umdrehung
setp encoder.1.counter-mode 1        # Wenn 1 gesetzt, wird B-Signal ignoriert

# disable 4 times encoder, otherwise each klick will ingreas jogwheel-count by 4 instead of 1
# 4-fach-Auswertung vom Encoder ausschalten, sonst wird jogwheel-count bei jedem Klick um 4 statt um 1 erhoeht
setp encoder.0.x4-mode FALSE

loadrt scale count=1                 # Wird gebraucht, um U/Sekunde in U/min umzurechnen
addf scale.0 servo-thread
setp scale.0.gain 60                 # Ausgang = 60 x Eingang

net spindle_index parport.1.pin-12-in => encoder.1.phase-A => encoder.1.phase-Z

net spindle-index-enable motion.spindle-index-enable <=> encoder.1.index-enable
net spindle-rps encoder.1.velocity => scale.0.in
net spindle-rpm scale.0.out

# Zum Erkennen ob Geschwindigkeit erreicht wurde
# For at Speed detection
loadrt near
addf near.0 servo-thread
# Stellt fest ob zwei Werte in etwa gleich sind
# Wahr wenn, in1/scale <= in2 <= in1*scale
# oder wenn |in1-in2| <= difference
# prooves if two values are roughly the same
# true  if  in1/scale <= in2 <= in1*scale
# OR |in1-in2| <= difference

setp near.0.scale 1.2
setp near.0.difference 10
net spindle-cmd => near.0.in1	
#	net spindle-revs motion.spindle-revs => near.0.in1
net spindle-rpm => near.0.in2
net spindle-at-speed near.0.out => motion.spindle-at-speed

After that spindle-rpm must be connected in postgui.hal to gmoccapy.spindle_feedback_bar

May be you need to pass the signal through an ABS to get positive values.

Hope that helps.

Norbert

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28 Apr 2017 14:43 - 28 Apr 2017 14:51 #92275 by newbynobi
Replied by newbynobi on topic Spindel problems in Gmoccapy
The changed code
##########################################################
# Spindeldrehzahl messen / mesurement spindle revolution #
##########################################################

loadrt encoder num_chan=1
addf encoder.update-counters   servo-thread
addf encoder.capture-position  servo-thread

setp encoder.0.position-scale 1      # Anzahl der Impulse je Umdrehung
setp encoder.0.counter-mode 1        # Wenn 1 gesetzt, wird B-Signal ignoriert

# disable 4 times encoder, otherwise each klick will ingreas jogwheel-count by 4 instead of 1
# 4-fach-Auswertung vom Encoder ausschalten, sonst wird jogwheel-count bei jedem Klick um 4 statt um 1 erhoeht
setp encoder.0.x4-mode FALSE

loadrt scale count=1                 # Wird gebraucht, um U/Sekunde in U/min umzurechnen
addf scale.0 servo-thread
setp scale.0.gain 60                 # Ausgang = 60 x Eingang

net spindle_index parport.0.pin-10-in => encoder.0.phase-A => encoder.0.phase-Z

net spindle-index-enable motion.spindle-index-enable <=> encoder.0.index-enable
net spindle-rps encoder.0.velocity => scale.0.in
net spindle-rpm scale.0.out

# Zum Erkennen ob Geschwindigkeit erreicht wurde
# For at Speed detection
loadrt near
addf near.0 servo-thread
# Stellt fest ob zwei Werte in etwa gleich sind
# Wahr wenn, in1/scale <= in2 <= in1*scale
# oder wenn |in1-in2| <= difference
# prooves if two values are roughly the same
# true  if  in1/scale <= in2 <= in1*scale
# OR |in1-in2| <= difference

setp near.0.scale 1.2
setp near.0.difference 10
net spindle-cmd => near.0.in1	
net spindle-rpm => near.0.in2
net spindle-at-speed near.0.out => motion.spindle-at-speed

In your postgui.hal file you need:
net spindle-rpm         gmoccapy.spindle_feedback_bar
net spindle-at-speed    gmoccapy.spindle_at_speed_led


Norbert
Last edit: 28 Apr 2017 14:51 by newbynobi.

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28 Apr 2017 14:56 - 28 Apr 2017 14:59 #92276 by tecno
Replied by tecno on topic Spindel problems in Gmoccapy


Line 43

net spindle-index => encoder.1.phase-Z => encoder.1.phase-A
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Last edit: 28 Apr 2017 14:59 by tecno.

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28 Apr 2017 15:16 #92277 by newbynobi
Replied by newbynobi on topic Spindel problems in Gmoccapy
Hallo bengt,

please use the changed code.
See my last post.

Norbert

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28 Apr 2017 15:19 - 28 Apr 2017 15:22 #92278 by Todd Zuercher
Replied by Todd Zuercher on topic Spindel problems in Gmoccapy
I believe you only have one encoder so the pin names should be:
net spindle-index => encoder.0.phase-Z => encoder.0.phase-A

(There were also other places where encoder.1 should be changed to encoder.0, but Norbert corrected them while I was typing.)
Last edit: 28 Apr 2017 15:22 by Todd Zuercher.

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