Ohmic3 hal file errors
05 Apr 2021 00:48 - 05 Apr 2021 01:23 #204833
by bevins
390K
and I used 24K for the 5 watt pullup.
Please post the calculations you do. I want to know how to do this.
Replied by bevins on topic Ohmic3 hal file errors
Bevins, post up your scaling resistor value and I'll look at the divider and I'll do some revised calcs for you.
390K
and I used 24K for the 5 watt pullup.
Please post the calculations you do. I want to know how to do this.
Last edit: 05 Apr 2021 01:23 by bevins.
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05 Apr 2021 01:30 #204838
by rodw
Replied by rodw on topic Ohmic3 hal file errors
ok the resistor is sized to suit 5 v so need to change it.
From P6 of the manual
R = (VFS - 10V)/100 uA
so lets go for 24.5 volts
R = (24.5-10)/100
= 14.5/100
= 0.145 M Ohms
= 145 K ohms
closest resistor (E24 series) = 147k so lets rework it
0.147 = (V-10)/100
0.147 * 100 = V
14.7 +10 = V
Therefore full scale is 24.7 volts
So the divider ratio = 24.7/10 = 2.47
To check:
2.47 * 10 volts full scale = 24.7
So change the resistor to 147k and change the divider from 4.9 to 2.47
From P6 of the manual
R = (VFS - 10V)/100 uA
so lets go for 24.5 volts
R = (24.5-10)/100
= 14.5/100
= 0.145 M Ohms
= 145 K ohms
closest resistor (E24 series) = 147k so lets rework it
0.147 = (V-10)/100
0.147 * 100 = V
14.7 +10 = V
Therefore full scale is 24.7 volts
So the divider ratio = 24.7/10 = 2.47
To check:
2.47 * 10 volts full scale = 24.7
So change the resistor to 147k and change the divider from 4.9 to 2.47
The following user(s) said Thank You: bevins
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05 Apr 2021 19:10 #204937
by bevins
Thanks Rod, you da man......
Just have to check on adjusting thc cause it is not tracking correctly but first get everything in cable tray.
Replied by bevins on topic Ohmic3 hal file errors
ok the resistor is sized to suit 5 v so need to change it.
From P6 of the manual
R = (VFS - 10V)/100 uA
so lets go for 24.5 volts
R = (24.5-10)/100
= 14.5/100
= 0.145 M Ohms
= 145 K ohms
closest resistor (E24 series) = 147k so lets rework it
0.147 = (V-10)/100
0.147 * 100 = V
14.7 +10 = V
Therefore full scale is 24.7 volts
So the divider ratio = 24.7/10 = 2.47
To check:
2.47 * 10 volts full scale = 24.7
So change the resistor to 147k and change the divider from 4.9 to 2.47
Thanks Rod, you da man......
Just have to check on adjusting thc cause it is not tracking correctly but first get everything in cable tray.
The following user(s) said Thank You: rodw
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06 Apr 2021 12:17 - 06 Apr 2021 12:19 #205086
by bevins
Replied by bevins on topic Ohmic3 hal file errors
I am getting a weird thing going on. The first time I start linuxcnc the probe works although their is a delay before arc starts but probing is working. After that it doesnt work. once out of 20 times maybe. See video.
The 2nd video is there is a delay before you get the torch coming on. it gets cut start M3 and then linuxcnc waits to send start arc.
Delay before starting:
The 2nd video is there is a delay before you get the torch coming on. it gets cut start M3 and then linuxcnc waits to send start arc.
Delay before starting:
Last edit: 06 Apr 2021 12:19 by bevins.
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06 Apr 2021 12:28 #205089
by rodw
Replied by rodw on topic Ohmic3 hal file errors
re the probing, is the blue light on the ohmic power supply on? seems there is no voltage.
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- tommylight
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06 Apr 2021 12:44 #205094
by tommylight
Replied by tommylight on topic Ohmic3 hal file errors
Regarding the wait, had the same issue with a build of QTPlasmaC a few days back, waits for exactly 15 seconds. Might have something to do with debounce .....
Updated versions work as advertised.
Updated versions work as advertised.
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06 Apr 2021 12:47 #205095
by bevins
Replied by bevins on topic Ohmic3 hal file errors
Yes the blue light is on. There is power.
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06 Apr 2021 12:56 #205097
by bevins
What is the method of updating plasmac?
Replied by bevins on topic Ohmic3 hal file errors
Regarding the wait, had the same issue with a build of QTPlasmaC a few days back, waits for exactly 15 seconds. Might have something to do with debounce .....
Updated versions work as advertised.
What is the method of updating plasmac?
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06 Apr 2021 13:38 #205107
by bevins
Replied by bevins on topic Ohmic3 hal file errors
I tried running update and upgrade. It worked but I still have same version plasmac ver 0.191
I cannot run dist-upgrade as it will install a diferent kernel.
How can I get the latest Plasmac ?
I cannot run dist-upgrade as it will install a diferent kernel.
How can I get the latest Plasmac ?
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- snowgoer540
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06 Apr 2021 14:03 - 06 Apr 2021 14:51 #205114
by snowgoer540
Replied by snowgoer540 on topic Ohmic3 hal file errors
Tommy was specifically referring to QtPlasmaC.
Development for PlasmaC on the Axis gui has stopped at v.191, so you are on the lastest plasmac. If you are referring to getting QtPlasmaC, you can follow the directions in the docs here: linuxcnc.org/docs/devel/html/plasma/qtplasmac.html
QtPlasmaC is the only supported GUI moving forward. (this was mentioned to you here: forum.linuxcnc.org/38-general-linuxcnc-q...city-question#201657)
This thread: forum.linuxcnc.org/plasmac/37233-plasmac-updates#143119 which is stickied in the plasmac section also tells you the status of all of that.
This thread: forum.linuxcnc.org/plasmac/41883-qtplasmac-release#202319 announced the release of QtPlasmaC and the fact that PlasmaC on Axis or Gmoccapy would not be supported moving forward.
Development for PlasmaC on the Axis gui has stopped at v.191, so you are on the lastest plasmac. If you are referring to getting QtPlasmaC, you can follow the directions in the docs here: linuxcnc.org/docs/devel/html/plasma/qtplasmac.html
QtPlasmaC is the only supported GUI moving forward. (this was mentioned to you here: forum.linuxcnc.org/38-general-linuxcnc-q...city-question#201657)
This thread: forum.linuxcnc.org/plasmac/37233-plasmac-updates#143119 which is stickied in the plasmac section also tells you the status of all of that.
This thread: forum.linuxcnc.org/plasmac/41883-qtplasmac-release#202319 announced the release of QtPlasmaC and the fact that PlasmaC on Axis or Gmoccapy would not be supported moving forward.
Last edit: 06 Apr 2021 14:51 by snowgoer540.
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