Using PncConf wizard

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31 Jul 2020 04:19 #176600 by ericg
Using PncConf wizard was created by ericg
I was looking at an old thread by tommylight, which I thought it would be handy to follow for my setup which is also a 5i25/G540 combo.
I noticed however that the I/O pins on your screenshot for I/O3 is different from mine, so some guidance would be appreciated on how to set mine up. For example according to my readhmid, Z step is pin 6 on the parallel port which is mapped to I/O 9 internally but I see no I/O 9 in my I/O3 page. Is there a later 5i25_G540 firmware I should flash? I also set on the configuration page the number of encoders and PWM generators to 0 as I use three stepper motors for axis and the SuperPID controler for spindle speed control (which is another niggling issue)
I have attached an image of my I/O 3 page and what readhmid shows me
BTW I do have a working setup which I did by hand but would like to know what the i/o numbers mean such as 000 and 00 and 0 and also 001 vs 1 etc and why the i/o pins are different to yours

your help in understanding this is appreciated
Eric
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31 Jul 2020 08:09 #176616 by tommylight
Replied by tommylight on topic Using PncConf wizard
Do not worry about those numbers, everything will be in place after saving.
Those numbers are for orientation so 0 is stepgen 0, 1 is stepgen 1 etc.
No need to flash, it seems the firmware is set for G540.
The differences you see might be since i use the latest master branch.

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31 Jul 2020 08:23 #176622 by ericg
Replied by ericg on topic Using PncConf wizard
Thanks tommylight, I got that finally, but it still confuses me why there are 000, 00, vs 0 and 001 vs 1 etc, and also when I realized from your notes that I did not need encoders or pwm for steppers and a superPID spindle controller I put them to 0 now I have to learn how to control the spindle on/off and speed - is that done via PncConf or do I hand craft it, and if so how do I control the speed? that is how do I vary the voltage to control the speed (I know how to control on/off)
Full of dumb questions aren't I.

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31 Jul 2020 10:16 #176631 by tommylight
Replied by tommylight on topic Using PncConf wizard
Yes, you do need to set 1 PWM in pncconf for speed control.
So open pncconf but choose to modify an existing config, not to create a new one, and add the PWM.

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01 Aug 2020 00:55 #176717 by ericg
Replied by ericg on topic Using PncConf wizard
I have got the spindle setting page back and set it to 5v for 30000rpm which is what my super-PID controller requires, running a program controls the spindle on/off, the Gcode calls say S10000, the pyvcp panel shows 10000rpm, but my spindle runs flat out at 30000 rpm, which setting controls the voltage level that outputs to the super-PID to control the speed. My stepconf worked OK
Here are the bits out of my .hal file re the spindle
Appreciated any help - guidance on this

# --- SPINDLE-CW ---
setp hm2_5i25.0.gpio.007.is_output true
net spindle-cw => hm2_5i25.0.gpio.007.out
and
#*******************
# SPINDLE
#*******************

setp pid.s.Pgain [SPINDLE_0]P
setp pid.s.Igain [SPINDLE_0]I
setp pid.s.Dgain [SPINDLE_0]D
setp pid.s.bias [SPINDLE_0]BIAS
setp pid.s.FF0 [SPINDLE_0]FF0
setp pid.s.FF1 [SPINDLE_0]FF1
setp pid.s.FF2 [SPINDLE_0]FF2
setp pid.s.deadband [SPINDLE_0]DEADBAND
setp pid.s.maxoutput [SPINDLE_0]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

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

setp hm2_5i25.0.pwmgen.00.output-type 1
setp hm2_5i25.0.pwmgen.00.scale [SPINDLE_0]OUTPUT_SCALE


net spindle-vel-cmd-rpm => hm2_5i25.0.pwmgen.00.value
net spindle-enable => hm2_5i25.0.pwmgen.00.enable

# ---setup spindle control signals---

net spindle-vel-cmd-rps <= spindle.0.speed-out-rps
net spindle-vel-cmd-rps-abs <= spindle.0.speed-out-rps-abs
net spindle-vel-cmd-rpm <= spindle.0.speed-out
net spindle-vel-cmd-rpm-abs <= spindle.0.speed-out-abs
net spindle-enable <= spindle.0.on
net spindle-cw <= spindle.0.forward
net spindle-ccw <= spindle.0.reverse
net spindle-brake <= spindle.0.brake
net spindle-revs => spindle.0.revs
net spindle-at-speed => spindle.0.at-speed
net spindle-vel-fb-rps => spindle.0.speed-in
net spindle-index-enable <=> spindle.0.index-enable

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

sets spindle-at-speed true

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01 Aug 2020 03:27 #176734 by PCW
Replied by PCW on topic Using PncConf wizard
What is the value of [SPINDLE_0]OUTPUT_SCALE
( its in your .ini file? )

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01 Aug 2020 03:32 #176735 by ericg
Replied by ericg on topic Using PncConf wizard
it's 30500, but I have changed around with no effect

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01 Aug 2020 03:39 #176739 by PCW
Replied by PCW on topic Using PncConf wizard
Is this with a G540 drive?
Can you also post your .ini file?

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01 Aug 2020 03:43 - 01 Aug 2020 03:47 #176741 by ericg
Replied by ericg on topic Using PncConf wizard
Yes, it's with a G540 wired to use variable 5v supply, which one of the reasons I don't understand why I wouls need a PWM generator in the PncConf wizard to set it up, I did find an old thread which has different ini file setup but I think that was for a PWM signal to the super-pid , regardless, I'm confused as usual
I just changed the output scal to 10000 just to see and that is what I just sent
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Last edit: 01 Aug 2020 03:47 by ericg.

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01 Aug 2020 04:32 - 01 Aug 2020 04:39 #176746 by PCW
Replied by PCW on topic Using PncConf wizard
"OUTPUT_SCALE = 10000"

Would give you full output (5V) at a requested spindle speed of 10000 RPM

It would probably be helpful to measure the spindel output voltage of the G540
at different spindle speed settings to see a bit better what's going on

The PWM would work with a constant 5V to the G540 and should provide
0 to 5V when the commanded speed is 0 to 30000 RPM (assuming OUTPUT_SCALE is 30000)
Last edit: 01 Aug 2020 04:39 by PCW.

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