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  • PCW
  • PCW's Avatar
14 Feb 2025 17:04
Replied by PCW on topic Hal configuration for BISS encoder

Hal configuration for BISS encoder

Category: HAL

The _average_ PWM voltage (what a voltmeter reads) with be the output voltage (~5V)
times PWM_value/PWM_scale

The PWM amplitude is always 5V, its duty cycle changes with the PWM value

I would set the PWM value manually for testing as I have no idea what the velocities
are relative to the PWM scale
  • pmchetan
  • pmchetan
14 Feb 2025 16:16
Replied by pmchetan on topic Hal configuration for BISS encoder

Hal configuration for BISS encoder

Category: HAL

The PWM scale is voltage right? setp hm2_5i25.0.pwmgen.00.scale 5.0 means the amplitude of the signal is 5 volts.
Does PWM in our context go positive to negative!! I did try setting it like this with 7i77 board.
When I measure the PWM output with a voltmeter, it shows positive 5 volts with both positive and negative jog directions with direction pin providing +5v when using negative jog and staying at 0 volts with positive jog.

Since I mentioned scale as 5.0 and I'm getting 5 V PWM signals correctly but why an initial spike of 0.25 volts and it goes back to zero and then climbs to 5 volts is the mystery that needs solving. I'll plot the velocity and PWM signals tomorrow and report back but isn't the PWM signal the one with drives the position thereby driving the velocity? Maybe setting max jog velocity has some effects on the PWM signals generated.
  • Aciera
  • Aciera's Avatar
14 Feb 2025 16:10 - 14 Feb 2025 16:11
Replied by Aciera on topic using output pin multiple times

using output pin multiple times

Category: Advanced Configuration

Two ways to do this:
1. method add 'tool_probe_and.in1' to the line above like this:
net ztouch1 pyvcp.ztouch ztouch_clicked_and.in0
net ztouch2 hm2_5i25.0.7i84.0.0.input-08-not ztouch_clicked_and.in1 tool_probe_and.in1
net ztouch3 ztouch_clicked_and.out halui.mdi-command-03

net motion1 motion.digital-out-00 tool_probe_and.in0

net motion3 tool-probe.out motion.probe-input

2. Reuse the signal name assigned to the ...input-08-not.
net ztouch1 pyvcp.ztouch ztouch_clicked_and.in0
net ztouch2 hm2_5i25.0.7i84.0.0.input-08-not ztouch_clicked_and.in1
net ztouch3 ztouch_clicked_and.out halui.mdi-command-03

net motion1 motion.digital-out-00 tool_probe_and.in0
net ztouch2                       tool_probe_and.in1
net motion3 tool-probe.out motion.probe-input
  • cakeslob
  • cakeslob
14 Feb 2025 15:49
Replied by cakeslob on topic Remora - ethernet NVEM / EC300 / EC500 cnc board

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

has anyone made qtplasmac work with a NVEM card?
  File "/usr/share/qtvcp/screens/qtplasmac/qtplasmac_handler.py", line 220, in __init__
    float(self.iniFile.find('AXIS_Z', 'OFFSET_AV_RATIO')) * 60

  File "/usr/share/qtvcp/screens/qtplasmac/qtplasmac_handler.py", line 220, in __init__
    float(self.iniFile.find('AXIS_Z', 'OFFSET_AV_RATIO')) * 60



If anyone had a qtplasmac config for the NVEM, they would have ended our suffering 2 pages ago.
its probably this, i think the THC probably uses external offsets.
add this line and report back
github.com/rodw-au/showstopper/blob/master/my_Plasma.ini#L226

or the next time an error pops up, you can try and trace it out, using all those other plasmac examples I posted before, or by referring to rods config I just listed, otherwise this will be a very long process.
  • PCW
  • PCW's Avatar
14 Feb 2025 15:49
Replied by PCW on topic Hal configuration for BISS encoder

Hal configuration for BISS encoder

Category: HAL

You could plot the velocity command to see why the PWM behaves that way

 The PWM average output voltage will simple follow the PWM value its given

Note that you also have to make sure you don't exceed the maximum PWM
values (+- PWM scale)
 
  • spontarelliam
  • spontarelliam
14 Feb 2025 15:47
using output pin multiple times was created by spontarelliam

using output pin multiple times

Category: Advanced Configuration

I know this has been discussed ad nauseam on this forum but no matter how many posts I read or years I've used LinuxCNC, I just cannot understand how to accomplish these simple tasks.

I want motion.probe-input to be triggered when hm2_5i25.0.7i84.0.0.input-08-not is True AND motion.digital-out-00 is True.
I also want and MDI command called when hm2_5i25.0.7i84.0.0.input-08-not is True AND pyvcp button is clicked.
net ztouch1   pyvcp.ztouch                      ztouch_clicked_and.in0
net ztouch2  hm2_5i25.0.7i84.0.0.input-08-not  ztouch_clicked_and.in1
net ztouch3  ztouch_clicked_and.out            halui.mdi-command-03

net motion1       motion.digital-out-00                   tool_probe_and.in0
net motion2       hm2_5i25.0.7i84.0.0.input-08-not        tool_probe_and.in1
net motion3       tool-probe.out                          motion.probe-input

When I try to use the hm2_5i25.0.7i84.0.0.input-08-not pin twice, I get an "already in use" error. How can this be accomplished?

Thanks.
  • cakeslob
  • cakeslob
14 Feb 2025 15:43
Replied by cakeslob on topic Remora - ethernet NVEM / EC300 / EC500 cnc board

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

of the repositories that looked "hopeful"
Remora-main, and Remora-RT2052-cpp-Main had remora-the-3.0.c
both the same -- neither worked (forgot to incclude that)
and the one listed which also didn't work -- (same error)

I think maybe the 3.0 one I worried was specifically related to the EC500 (all the remora-??? directories under LinuxCNC appear from filenames to be ec500 based


If your board has the RT1052, refer to the page I linked to, and only install the components/firmware/configurations referred to in the documents. The linuxcnc .hal file configuration doesnt matter if its EC500 or NVEM. The config.txt is important to match with the board.
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