Another plasma component...

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7 years 5 months ago #135358 by phillc54
Replied by phillc54 on topic Another plasma component...
Rod and/or John,
Could you please try this:
In plasmac_buttons.glade change line 4 with a text editor from:
Code:
<requires lib="gtk+" version="2.24"/>
to:
Code:
<requires lib="gtk+" version="2.18"/>

Cheers, Phill.

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7 years 5 months ago #135359 by AgentWD40
Replied by AgentWD40 on topic Another plasma component...

phillc54 wrote:

All I know is i'm to wire into encoder A

Yes, the THCAD wires into encoder A

- run LinuxCNC
- open halshow and watch plasmac.arc-voltage-in and plasmac.arc-voltage-out
- set Voltage Scale in the Plasma Config tab to 1
- set Voltage Offset in the Plasma Config tab to the value read from plasmac.arc-voltage-in
- apply a known voltage to the TCHCAD input
- set Voltage Scale in the Plasma Config tab to (known-voltage / plasmac.arc-voltage-out)
you could probably keep tweaking to fine tune further.

Basically:
Voltage Offset sets the displayed voltage to 0 when there are zero volts present.
Voltage Scale set the voltage to the correct value for a known voltage.

Cheers, Phill.


I must be missing something. plasmac.arc-voltage-in voltage-out, as well as hm2_7i96.0.encoder.00.velocity don't show anything, all zero.

Is there another component I need to load?

The thcad is blinking, and blinks faster when I put voltage on the input. I tried F/1 and F/32. Also, the bipolar/unipoler jumper is confusing referencing the silkscreen vs the manual.

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7 years 5 months ago #135360 by phillc54
Replied by phillc54 on topic Another plasma component...

I must be missing something. plasmac.arc-voltage-in voltage-out, as well as hm2_7i96.0.encoder.00.velocity don't show anything, all zero.

if hm2_7i96.0.encoder.00.velocity shows zero then you must be missing a connection, you need 0V, +5V, FO- to ENCA- and FO+ to ENCA+ (that is to my 7i76E at least)

Is there another component I need to load?

You shouldn't need anything else.

The thcad is blinking, and blinks faster when I put voltage on the input. I tried F/1 and F/32.

I have mine at F/32 (recommended by PCW)

Also, the bipolar/unipoler jumper is confusing referencing the silkscreen vs the manual.

Yes, I see what you mean, mine is set as on the silkscreen, W1 is up for Unipolar


Cheers, Phill.

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7 years 5 months ago #135362 by JTknives
Replied by JTknives on topic Another plasma component...
I did get my torch start problem figured out. I had the arc voltage set to to high so sometimes it would not hit that voltage and would error out.

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7 years 5 months ago #135363 by rodw
Replied by rodw on topic Another plasma component...

AgentWD40 wrote: [
Speaking of barebone config, the last hal component I need to hook up is the torch voltage. I'm running a 7i96 and a thcad10. What lines do I need to get the thc hooked up? Right now the only hal config I have in regard to this is

net plasmac:arc-voltage-in hm2_7i96.0.encoder.00.velocity => plasmac.arc-voltage-in

But it's just a placeholder to get the config to load until I figure out what it's supposed to be. All I know is i'm to wire into encoder A and somehow calibrate with the sticker on the back of the thcad card. I know the THCAD manual has a simple formula for converting the frequency to voltage with these calibration figures, but when I was looking through plasmac.comp I didn't see where I use these.


I disagree with Phill here. you don't need to put a voltage on the input as you have the calibration data from mesa so you know what it will be reading at 10 volts.
Make sure the board is set to 1/32 divide mode on the link on the THCAD. Divide both values on the board by 32 and write them down. Work out what will be the actual volts indicated. Say you have a 30:1 divider and full scale frequency is 28000. 10 volts x 30 = 300 volts. So your scale is 300/28,000 = 0.0107 and your offset will be 1/32 of the 0 volt frequency you wrote down earlier (probably around 3800)

The 1/32 setting is better for LInuxCNC's servo thread speed and allows more accurate sampling by the THCAD via some kind of averaging algorithim in the chip.

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7 years 5 months ago #135366 by rodw
Replied by rodw on topic Another plasma component...

AgentWD40 wrote: I must be missing something. plasmac.arc-voltage-in voltage-out, as well as hm2_7i96.0.encoder.00.velocity don't show anything, all zero.

Here is my THCAD connection pinouts. Ignore the numbers in brackets. Theu are specific to my machine

Attachment not found

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7 years 5 months ago #135368 by AgentWD40
Replied by AgentWD40 on topic Another plasma component...
Thank you rod, I actually found your pinout chart a little while ago. That's when I decided I better use the frequency divider.

Anyway, I figure troubleshooting my THCAD may be getting off topic here. I've posted some more info over here: forum.linuxcnc.org/27-driver-boards/3659...6-and-thcad?start=30

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7 years 5 months ago #135388 by islander261
Replied by islander261 on topic Another plasma component...
Phill

Here you go:
Code:
jd@plasma1 ~ $ lsb_release -a No LSB modules are available. Distributor ID: LinuxMint Description: LMDE 2 Betsy Release: 2 Codename: betsy

I run the Cinnamon desk top.

Also:
Code:
jd@plasma1 ~ $ uname -a Linux plasma1 4.1.15-rt17mah #1 SMP PREEMPT RT Fri Feb 26 23:43:49 PST 2016 x86_64 GNU/Linux
Code:
jd@plasma1 ~ $ lsmod Module Size Used by cfg80211 372736 0 bnep 20480 2 bluetooth 270336 5 bnep cpufreq_userspace 16384 0 rfkill 20480 3 cfg80211,bluetooth cpufreq_conservative 16384 0 cpufreq_stats 16384 0 cpufreq_powersave 16384 0 pci_stub 16384 1 vboxpci 20480 0 vboxnetadp 28672 0 vboxnetflt 24576 0 binfmt_misc 16384 1 vboxdrv 307200 3 vboxnetadp,vboxnetflt,vboxpci nls_utf8 16384 0 cifs 233472 0 fscache 45056 1 cifs fuse 77824 3 ecryptfs 73728 0 lp 16384 0 dm_crypt 24576 0 uinput 20480 1 coretemp 16384 0 kvm_intel 135168 0 kvm 360448 1 kvm_intel joydev 20480 0 snd_hda_codec_analog 16384 1 snd_hda_codec_generic 53248 1 snd_hda_codec_analog snd_hda_intel 28672 3 snd_hda_controller 24576 1 snd_hda_intel microcode 20480 0 iTCO_wdt 16384 0 snd_hda_codec 77824 4 snd_hda_codec_generic,snd_hda_intel,snd_hda_controller,snd_hda_codec_analog dcdbas 16384 0 iTCO_vendor_support 16384 1 iTCO_wdt ppdev 16384 0 serio_raw 16384 0 pcspkr 16384 0 acpi_cpufreq 16384 0 snd_hda_core 24576 4 snd_hda_codec_generic,snd_hda_codec,snd_hda_controller,snd_hda_codec_analog processor 28672 1 acpi_cpufreq lpc_ich 24576 0 mfd_core 16384 1 lpc_ich evdev 20480 15 parport_pc 24576 1 snd_hwdep 16384 1 snd_hda_codec snd_pcm 73728 3 snd_hda_codec,snd_hda_intel,snd_hda_controller tpm_tis 20480 0 parport 36864 3 lp,ppdev,parport_pc shpchp 32768 0 tpm 28672 1 tpm_tis snd_timer 24576 1 snd_pcm snd 53248 13 snd_hwdep,snd_timer,snd_pcm,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,snd_hda_codec_analog soundcore 16384 1 snd ext4 425984 1 crc16 16384 2 ext4,bluetooth jbd2 77824 1 ext4 mbcache 16384 1 ext4 dm_mirror 20480 0 dm_region_hash 16384 1 dm_mirror dm_log 16384 2 dm_region_hash,dm_mirror dm_mod 90112 3 dm_log,dm_mirror,dm_crypt sg 28672 0 sd_mod 32768 3 hid_generic 16384 0 usbhid 40960 0 ata_generic 16384 0 hid 94208 2 hid_generic,usbhid psmouse 94208 0 ata_piix 32768 2 libata 167936 2 ata_generic,ata_piix i2c_i801 20480 0 scsi_mod 180224 3 sg,libata,sd_mod i915 864256 3 8139too 28672 0 8139cp 24576 0 mii 16384 2 8139cp,8139too tg3 139264 0 ptp 20480 1 tg3 pps_core 16384 1 ptp libphy 24576 1 tg3 video 20480 1 i915 i2c_algo_bit 16384 1 i915 drm_kms_helper 77824 1 i915 uhci_hcd 28672 0 ehci_pci 16384 0 ehci_hcd 45056 1 ehci_pci drm 237568 5 i915,drm_kms_helper button 16384 1 i915 usbcore 147456 4 uhci_hcd,ehci_hcd,ehci_pci,usbhid usb_common 16384 1 usbcore i2c_core 40960 5 drm,i915,i2c_i801,drm_kms_helper,i2c_algo_bit thermal_sys 28672 2 video,processor

John

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7 years 5 months ago #135439 by phillc54
Replied by phillc54 on topic Another plasma component...
Thanks John,

I managed to find LMDE2 and made a new virtual machine last night, loaded all the dependencies, cloned plasmac and built LinuxCNC.
The colors work fine, I really don't know where to go from here...:(
Did you guys try the mod to the glade file?

Cheers, Phill.

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7 years 5 months ago #135473 by AgentWD40
Replied by AgentWD40 on topic Another plasma component...
You guys think a THCAD calibration setting calculator like this would be a useful addition to something like the configurator?
jscalc.io/calc/NTr5QDX6WgMThBVb

[edit]
I hope it works right because I can't figure out how to get back in to edit the stupid thing.. anyway I figure
scale = thcad_model_voltage * frequency_divider * plasma_divider_ratio / (max_voltage_frequency - zero_voltage_frequency)
offset = zero_voltage_frequency / frequency_divider

where max_voltage_frequency and zero_voltage_frequency are from the calibration sticker x1000

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