Help with adding PlasmaC to base config + 7i76e

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11 May 2020 23:23 #167432 by phillc54
Oops, my bad.

This:
setp hm2_7i76e.0.encoder.00.scale -1
setp hm2_7i76e.0.encoder.00.filter -1
setp hm2_7i76e.0.encoder.00.counter-mode -1

Should have been:
setp  hm2_7i76e.0.encoder.00.scale -1
setp  hm2_7i76e.0.encoder.00.filter 1
setp  hm2_7i76e.0.encoder.00.counter-mode 1

I will blame my phone...:blush:

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12 May 2020 00:54 #167445 by tommylight

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13 May 2020 15:45 #167655 by Plasmaguy
Using Mode 0 I'm unable to get an arc-ok signal on the GUI when I make a test cut using a 3 second torch pulse.

I tried a couple of different things that were suggested in another thread with this issue, but without success.

I looked in the hal show and see there is an arc-ok pin but nothing I see that corresponds in my hal or machine connections files, doing a ctrl+f for "arc-ok" yields no results.

Do I need to add another line to my machine.connections and/or machine.hal file(s) to make it work?

Like: net plasmac:arc-ok => hm2_7i76e.0.encoder.00.velocity => plasmac.arc-ok-in ?
Attachments:

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13 May 2020 15:52 #167656 by tommylight
Do you get a voltage reading on the gui while the plasma is cutting ? What voltage ?
In mode 0 the arcok is derived from the THCAD voltage reading and must be between the presets on the "config" panel, OK High Volts and OK Low Volts. Set that to 60 for low and to 300 for high, for the time being while you are tuning things, later you can fine tune that for reliable arcok signal.
Is the torch enabled on the GUI, the big red button ?

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13 May 2020 16:02 - 13 May 2020 16:03 #167659 by Plasmaguy
Yes I get a perfect voltage reading from the THCAD (128v @100ipm cutting 11ga steel).

I enable the torch and do a 3 second pulse @ 100ipm, torch height .06 inches above the material.
Last edit: 13 May 2020 16:03 by Plasmaguy.

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13 May 2020 16:20 - 14 May 2020 15:31 #167663 by Plasmaguy
Once I reset the OK HIGH & LOW to 60 & 300 I still don't have an arc okay signal while jogging & torch pulsing.

I have 45XP ARC OK leads available that I can easily land on 7176e and switch PlasmaC to mode 1 but just curious to see if I can get it to go in mode 0...there's no reason it shouldn't.

Update: I found this thread which gave me info I needed to get my "arc-ok" working.

I got an arc-ok signal by wiring in the arc-ok leads from my 45XP to my 7i76e and then adding:

net plasmac:arc-ok-in => hm2_7i76e.0.7i76.0.0.input-08 => plasmac.arc-ok-in

to my machine.connections file and switching the .ini to "1" for mode 1.

So I am up and running 100% now in Mode 1. Thanks for everyone's help along the way!
Last edit: 14 May 2020 15:31 by Plasmaguy. Reason: Fix code

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13 May 2020 18:36 #167672 by CNCFred
In subdirectory Linuxcnc configs and the directory of your plasmac config

Use in console
grep -i -r -C 5 textosearch --color=always | less -SR

This will show all found textosearch in all files in this directory

Did you see such halscope? forum.linuxcnc.org/plasma-laser/38636-va...ide?start=110#161968
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13 May 2020 18:42 #167673 by CNCFred

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13 May 2020 23:19 #167682 by phillc54

I got an arc-ok signal by wiring in the arc-ok leads from my 45XP to my 7i76e and then adding:

net plasmac:arc-ok-in => hm2_7i76e.0.encoder.00.velocity => plasmac.arc-ok-in

to my machine.connections file and switching the .ini to "1" for mode 1.

So I am up and running 100% now in Mode 1. Thanks for everyone's help along the way!


That doesn't seem right, it should be using an input pin, not the velocityo pin, something like:
net plasmac:arc-ok-in hm2_7i76e.0.7i76.0.0.input-30 => plasmac.arc-ok-in

The velocity pin should be:
net plasmac:arc-voltage-in hm2_7i76e.0.encoder.00.velocity => plasmac.arc-voltage-in
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14 May 2020 08:15 #167711 by rodw


Do I need to add another line to my machine.connections and/or machine.hal file(s) to make it work?

Like: net plasmac:arc-ok => hm2_7i76e.0.encoder.00.velocity => plasmac.arc-ok-in ?


Yes but that is way wrong

Phill has ashowed you how to do it. Something like
net plasmac:arc-ok-in hm2_7i76e.0.7i76.0.0.input-30 => plasmac.arc-ok-in

Physical wiring needs to take field power and connect it to one of the AcOK pins in your circular connector.
The other pin on that connector needs to be connected to an input (input 30 in the example)
SO what happens is when the plasma cutter sees a valid arc, it will close a relay inside the plasma cutter and that will switch field power to the input.
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