Plasma THC

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24 Aug 2018 20:32 - 24 Aug 2018 20:33 #116561 by Grotius
Replied by Grotius on topic Plasma THC
Hi David, this is your home work :

For the ini file, Replace the # sign with the available grotius lines to stay in line.
Do it carefully.

In your hal file, enable the spindle command's, delete the # sign at :

net spindle-enable <= motion.spindle-on
net spindle-cw <= motion.spindle-forward

Maybe you need more to enable, kind of logic thinking, try this, if previous works, it's okey. :
net spindle-index-enable <=> pid.s.index-enable
net spindle-enable => pid.s.enable
net spindle-vel-cmd-rpm => pid.s.command
net spindle-vel-fb-rpm => pid.s.feedback
net spindle-output <= pid.s.output

Your hal file is the simplest file, your ini just needs more care, but i see, it's quite easy to do.

To my happyness, the grotius postgui has no difficulties. Here are no hal and ini relationships coupled to Mesa by me so far.
Only pos_in is pos_out keeps on tracking your z axis position in the motion section, but this is done by the THC2.component.

So i think you are on the run very quicly. But important :

1. Tune your machine as good as you can.
2. Take your time. Even if it cost's your 2-4 weeks.
3. In the end, when you have tested the software for about 4 weeks, you can say what you want.
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Last edit: 24 Aug 2018 20:33 by Grotius.
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24 Aug 2018 22:30 #116563 by snugglylovemuffin
Replied by snugglylovemuffin on topic Plasma THC
Sweet, looks like she took hold, will this work with the Proma THC or will I have to get the Mesa THCAD?

I'm definitely going to take some time dialing it in; I will have some questions regarding that as soon as I start test cutting.

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24 Aug 2018 22:45 #116564 by Grotius
Replied by Grotius on topic Plasma THC
Mesa thc is cheaper and it is build for linuxcnc. If you have Proma already i would use it.
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25 Aug 2018 00:05 #116566 by snugglylovemuffin
Replied by snugglylovemuffin on topic Plasma THC
I already bought the proma unfortunately... Mesa needs to do some more advertising! Their THC is 1/4 the price :/

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25 Aug 2018 00:20 #116568 by rodw
Replied by rodw on topic Plasma THC

I already bought the proma unfortunately... Mesa needs to do some more advertising! Their THC is 1/4 the price :/


The Mesa THCAD is not a THC. All it does is measure the torch voltage. You have to build the THC in LinuxCNC.
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25 Aug 2018 09:51 - 25 Aug 2018 10:48 #116572 by Grotius
Replied by Grotius on topic Plasma THC
Attached a sample how to connect proma on mesa in the grotius postgui file.
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Last edit: 25 Aug 2018 10:48 by Grotius.
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25 Aug 2018 22:23 #116586 by snugglylovemuffin
Replied by snugglylovemuffin on topic Plasma THC
Am I correct in assuming that the "probe" is the same as a float switch?

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26 Aug 2018 00:27 #116588 by rodw
Replied by rodw on topic Plasma THC

Am I correct in assuming that the "probe" is the same as a float switch?


Yes the switch is triggered when the Z axis floats up and it is connected to the probe signal inside your linuxCNC HAL file. That lets LinuxCNC act on it from G code.
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26 Aug 2018 19:35 #116614 by cncjohn
Replied by cncjohn on topic Plasma THC
Hi Tommylight
I am building a system with cut50, linuxcnc and PromaTHC compact.
Trying to get my system ready to use your help is badly needed - possibly take a few queries before I understand what is needed. I am trying to get thc-toma-stepper to launch but no luck so far. I paste some code from dmesg below. Any help welcome
Thank you
John

[ 9593.646457] RTAI[hal]: compiled with gcc version 4.7.2 (Debian 4.7.2-5) .
[ 9593.646510] RTAI[hal]: mounted (IPIPE-NOTHREADS, IMMEDIATE (INTERNAL IRQs DISPATCHED), ISOL_CPUS_MASK: 0).
[ 9593.646515] SYSINFO: CPUs 2, LINUX APIC IRQ 2312, TIM_FREQ 12556835, CLK_FREQ 2009171000, CPU_FREQ 2009171000
[ 9593.646519] RTAI_APIC_TIMER_IPI: RTAI DEFINED 2314, VECTOR 2314; LINUX_APIC_TIMER_IPI: RTAI DEFINED 2312, VECTOR 2312
[ 9593.646524] TIMER NAME: lapic; VARIOUSLY FOUND APIC FREQs: 12556835, 12556835, 12471500
[ 9593.655791] RTAI[malloc]: global heap size = 2097152 bytes, <BSD>.
[ 9593.655850] , <uses LINUX SYSCALLs>, kstacks pool size = 524288 bytes.
[ 9593.655856] RTAI[sched]: hard timer type/freq = APIC/12556835(Hz); default timing: oneshot; linear timed lists.
[ 9593.655860] RTAI[sched]: Linux timer freq = 250 (Hz), TimeBase freq = 2009171000 hz.
[ 9593.655863] RTAI[sched]: timer setup = 999 ns, resched latency = 2944 ns.
[ 9593.661497] RTAI[math]: loaded.
[ 9593.814920] trivkins: Unknown parameter `coordinates'
[ 9594.126922] RTAI[math]: unloaded.
[ 9594.129366] SCHED releases registered named ALIEN PEDV$D
[ 9594.135640] RTAI[malloc]: unloaded.
[ 9594.232029] RTAI[sched]: unloaded (forced hard/soft/hard transitions: traps 0, syscalls 0).
[ 9594.234314] I-pipe: head domain RTAI unregistered.
[ 9594.234376] RTAI[hal]: unmounted.

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26 Aug 2018 21:10 #116618 by snugglylovemuffin
Replied by snugglylovemuffin on topic Plasma THC
What kind of controller are you using? I'm using some similar equipment but had problems implementing the Toma because I'm using a mesa board. Grotius and Rodw (I think Tommylight as well) have been working on a new system for Plasma/laser/waterjet machines that are adaptable to Parport and Mesa options.
=> github.com/michelwijnja/external_offsets...lob/master/README.md

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