Servo Spindle motor encoder Mesa 7i76e
27 Apr 2020 13:57 #165820
by andypugh
Some of the spindle speed pins have changed since v2.4 (2011?) Are you sure that you are usiong that version? I would expect there to be an error if you were adding pins to a net that don't exist. linuxcnc.org/docs/2.4/html/man/man9/motion.9.html
I am beginning to wonder if you are running the HAL file that you think you are.
Are you really saying that motion.spindle-speed-out has a value, but motion.spindle-speed-out-rps does not? That seems almost impossible.
Replied by andypugh on topic Servo Spindle motor encoder Mesa 7i76e
im using 2.4.17
Some of the spindle speed pins have changed since v2.4 (2011?) Are you sure that you are usiong that version? I would expect there to be an error if you were adding pins to a net that don't exist. linuxcnc.org/docs/2.4/html/man/man9/motion.9.html
I am beginning to wonder if you are running the HAL file that you think you are.
Are you really saying that motion.spindle-speed-out has a value, but motion.spindle-speed-out-rps does not? That seems almost impossible.
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27 Apr 2020 14:19 #165827
by Erikcnc
wait i am doing something really dumb here.
i was turning it by hand.
so, at manual speed set to 1000 rpm i see that motion.spindle-speed-out-rps is also 1000 rpm.
near.0.in1 is then 16.66667
near.0.in2 is fluctuating around that same value.
Replied by Erikcnc on topic Servo Spindle motor encoder Mesa 7i76e
im using 2.4.17
Some of the spindle speed pins have changed since v2.4 (2011?) Are you sure that you are usiong that version? I would expect there to be an error if you were adding pins to a net that don't exist. linuxcnc.org/docs/2.4/html/man/man9/motion.9.html
I am beginning to wonder if you are running the HAL file that you think you are.
Are you really saying that motion.spindle-speed-out has a value, but motion.spindle-speed-out-rps does not? That seems almost impossible.
wait i am doing something really dumb here.
i was turning it by hand.
so, at manual speed set to 1000 rpm i see that motion.spindle-speed-out-rps is also 1000 rpm.
near.0.in1 is then 16.66667
near.0.in2 is fluctuating around that same value.
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27 Apr 2020 14:58 #165834
by andypugh
And what is near.0.out doing?
And does motion.spindle-revs _increase_ by 1 for each forward rotation of the spindle?
Replied by andypugh on topic Servo Spindle motor encoder Mesa 7i76e
near.0.in1 is then 16.66667
near.0.in2 is fluctuating around that same value.
And what is near.0.out doing?
And does motion.spindle-revs _increase_ by 1 for each forward rotation of the spindle?
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27 Apr 2020 15:59 #165841
by Erikcnc
near.0.out
is true when spindle is not rotating. is false when spindle is on
motion.spindle-revs
every one rotation its counts 1.
Replied by Erikcnc on topic Servo Spindle motor encoder Mesa 7i76e
near.0.in1 is then 16.66667
near.0.in2 is fluctuating around that same value.
And what is near.0.out doing?
And does motion.spindle-revs _increase_ by 1 for each forward rotation of the spindle?
near.0.out
is true when spindle is not rotating. is false when spindle is on
motion.spindle-revs
every one rotation its counts 1.
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27 Apr 2020 18:54 #165854
by andypugh
Replied by andypugh on topic Servo Spindle motor encoder Mesa 7i76e
near.0.out should go true (at 1000 rpm) if:
in1 > 11 AND in1 < 25
OR
in1 > 13 AND in1 < 19
So, for the numbers given, near.0.out really should be changing value.
in1 > 11 AND in1 < 25
OR
in1 > 13 AND in1 < 19
So, for the numbers given, near.0.out really should be changing value.
The following user(s) said Thank You: Erikcnc
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28 Apr 2020 12:28 #165971
by Erikcnc
i found something thoug.
i changedto
at M4 (what i use for normal turning (slandbed)) i got spindle at speed on true (green led)
M3 does not get on true.
to be fair, have no idea what abs does.
if i ajustto
every direction is false again.
maybe ringing a bel?
Replied by Erikcnc on topic Servo Spindle motor encoder Mesa 7i76e
near.0.out should go true (at 1000 rpm) if:
in1 > 11 AND in1 < 25
OR
in1 > 13 AND in1 < 19
So, for the numbers given, near.0.out really should be changing value.
i found something thoug.
i changed
net spindle-vel-cmd-rps => near.0.in1net spindle-vel-cmd-rps-abs => near.0.in1at M4 (what i use for normal turning (slandbed)) i got spindle at speed on true (green led)
M3 does not get on true.
to be fair, have no idea what abs does.
if i ajust
net spindle-fb-rpm => near.0.in2net spindle-fb-rpm-abs => near.0.in2every direction is false again.
maybe ringing a bel?
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28 Apr 2020 13:15 #165978
by andypugh
Replied by andypugh on topic Servo Spindle motor encoder Mesa 7i76e
When you said that in1 and in2 were "about the same value" did you possibly mean "except for one being positive and one being negative"
I suspect that if you used both the -abs signals then it would work.
"abs" means "absolute value", without the sign.
I suspect that if you used both the -abs signals then it would work.
"abs" means "absolute value", without the sign.
The following user(s) said Thank You: Erikcnc
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28 Apr 2020 15:23 - 28 Apr 2020 22:22 #165987
by Erikcnc
Replied by Erikcnc on topic Servo Spindle motor encoder Mesa 7i76e
I'm sorry, things getting weirder and weirder.
I changed something, but before that i checkt the near pin again in halshow
M3 1000 rpm
M4 1000 rpm
So what did i changed
Hal
counter-mode set to 0 to quadrature mode
INI
Encoder is A+ B+ and Z+ 1024 P/R
www.antratek.com/rotary-encoder-1024-p-r-quadrature
Encoder_scale = 4096
Output_scale = 5700 (because of the drive wheel diameter difference 5%)
Standard i got 1000 rpm in gmoccapy.
M3 1000 rpm gets true
M4 is -1000 rpm gets also true.
Now, at 2000 rpm...spindle goes to around 500 in both directions.
Same counds for 1200 rpm.
But, if i touch the slide bar to 50% and carfully go to 100%...i got the right rpm....
What is going on here?
Sorry i i'm doing things 'out of the box'....
I will attach new hal and ini files.
I changed something, but before that i checkt the near pin again in halshow
M3 1000 rpm
near.0.out false
near.0.in1 16.66667
near.0.in2 -16.68*** fluctuating M4 1000 rpm
near.0.out false
near.0.in1 16.66667
near.0.in2 16.68*** fluctuating So what did i changed
Hal
counter-mode set to 0 to quadrature mode
INI
Encoder is A+ B+ and Z+ 1024 P/R
www.antratek.com/rotary-encoder-1024-p-r-quadrature
Encoder_scale = 4096
Output_scale = 5700 (because of the drive wheel diameter difference 5%)
Standard i got 1000 rpm in gmoccapy.
M3 1000 rpm gets true
M4 is -1000 rpm gets also true.
Now, at 2000 rpm...spindle goes to around 500 in both directions.
Same counds for 1200 rpm.
But, if i touch the slide bar to 50% and carfully go to 100%...i got the right rpm....
What is going on here?
Sorry i i'm doing things 'out of the box'....
I will attach new hal and ini files.
Attachments:
Last edit: 28 Apr 2020 22:22 by Erikcnc.
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28 Apr 2020 18:35 #165999
by andypugh
Where does your encoder index come from?
Replied by andypugh on topic Servo Spindle motor encoder Mesa 7i76e
Encoder_scale = 4096
Output_scale = 5700 (because of the drive wheel diameter difference 5%)
Where does your encoder index come from?
500 rpm actual speed or 500 rpm encoder measured speed?Now, at 2000 rpm...spindle goes to around 500 in both directions.
Same counds for 1200 rpm.
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28 Apr 2020 18:49 #166002
by Erikcnc
Do you mean where the encoder is located in the machine?
Directly to the spindle with a timing belt 1:1. (emcoturn 220)
I read ~500 rpm on the rpm barthat show the realtime rpm. so it runs slower than the givin actual speed in mdi.
i hope i explained it good enough though.
Replied by Erikcnc on topic Servo Spindle motor encoder Mesa 7i76e
Encoder_scale = 4096
Output_scale = 5700 (because of the drive wheel diameter difference 5%)
Where does your encoder index come from?
500 rpm actual speed or 500 rpm encoder measured speed?Now, at 2000 rpm...spindle goes to around 500 in both directions.
Same counds for 1200 rpm.
Do you mean where the encoder is located in the machine?
Directly to the spindle with a timing belt 1:1. (emcoturn 220)
I read ~500 rpm on the rpm barthat show the realtime rpm. so it runs slower than the givin actual speed in mdi.
i hope i explained it good enough though.
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