Plasmac Configurator

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6 years 4 months ago #170558 by KaleD
Replied by KaleD on topic Plasmac Configurator
By LED do you mean this?

Attachment not found



Or do you mean a physical LED?

At the moment I don't have any real life components. I plan to have P15 as the input, a 5v power from the BOB, and relays that open and close that circuit to prevent arc voltage from frying the BOB.

The yellow circle is always on.

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6 years 4 months ago #170560 by phillc54
Replied by phillc54 on topic Plasmac Configurator
Yes, yellow shows the LED as on. You need to connect the ohmic probe to in-not rather than in.

See 1.2 here linuxcnc.org/docs/2.4/html/hal_parallel_port.html


oops, I forgot to hit Submit....

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6 years 4 months ago #170562 by KaleD
Replied by KaleD on topic Plasmac Configurator
The error is gone. Thank you. Now I can't get the probe to trip. is 5v into P15 enough juice? The enable is actuating a relay just like I planned.

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6 years 4 months ago #170563 by phillc54
Replied by phillc54 on topic Plasmac Configurator
I "think" with parports you need to pull them down to 0V.

Someone who knows more about that than me may chime in...

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6 years 4 months ago #170566 by KaleD
Replied by KaleD on topic Plasmac Configurator

phillc54 wrote: I "think" with parports you need to pull them down to 0V.


In that event the ohmic sensor should trip when hooked to ground. Correct?

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6 years 4 months ago #170568 by phillc54
Replied by phillc54 on topic Plasmac Configurator
Yep.

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6 years 4 months ago #170569 by KaleD
Replied by KaleD on topic Plasmac Configurator
non of the grounds on the BOB affect it.

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6 years 4 months ago #170571 by phillc54
Replied by phillc54 on topic Plasmac Configurator
You may need to run HalShow so you can check the parport pins. If you use Watch on the required pins you will be ble to see them activate.

linuxcnc.org/docs/html/hal/halshow.html

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6 years 4 months ago #170572 by KaleD
Replied by KaleD on topic Plasmac Configurator
I'm looking at plasmac.ohmic-probe and also parport.0.pin-15-in-not.
both of them are red no matter what.

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6 years 4 months ago #170574 by phillc54
Replied by phillc54 on topic Plasmac Configurator
So the parport is not seeing the signal. Are you using a ground signal from the parport?

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