Messages

581

Brains Development / Re: Stuck on brain

« on: November 26, 2010, 06:33:15 PM »

Sorry Hood.  I didn't see the brain file you attached.  I'll give it a try.  Thanks very much.

582

Brains Development / Re: Stuck on brain

« on: November 26, 2010, 06:31:52 PM »

That's what I've been trying to do.  I just can't seem to figure out how to set up that logic in a brain.  I can do it in a macro pump, but I like the low overhead of the brains.  Things like this always seem to run smoother in brains.

583

General Mach Discussion / Re: PLC With Analog Input

« on: November 26, 2010, 04:44:43 PM »

Additionally, what would you guys recommend for a PLC.  I'm thinking the DL05 (Model D0-05DR)...

http://www.automationdirect.com/adc/Overview/Catalog/Programmable_Controllers/DirectLogic_Series_PLCs_%28Micro_to_Small,_Brick_-a-_Modular%29/DirectLogic_05_%28Micro_Brick_PLC%29/PLC_Units

And F0-04AD-2 add-on module for analog input. 

http://www.automationdirect.com/adc/Overview/Catalog/Programmable_Controllers/DirectLogic_Series_PLCs_%28Micro_to_Small,_Brick_-a-_Modular%29/DirectLogic_05_%28Micro_Brick_PLC%29/Analog_I-z-O

This my first time with PLC's, so I'm shooting in the dark as far as what I need.  Basically, I want the ability to input a few remote switches plus the analog input for a THC.  Near as I can tell, the above will do that, but if I'm headed down the wrong road, please set me straight.

Thanks

584

General Mach Discussion / Re: PLC With Analog Input

« on: November 26, 2010, 04:04:01 PM »

For you guys that know brains inside and out, I had another brains questions.  Please take a look at this thread.

http://www.machsupport.com/forum/index.php/topic,16622.0.html

TIA

585

General Mach Discussion / Re: PLC With Analog Input

« on: November 26, 2010, 04:00:20 PM »

Would it be better to do the programming inside the PLC and have the PLC trigger the THC up and down?  I'm assuming the PLC has that programming capability.

The other hurdle is building a usable voltage divider.  I know the basic concept and can breadboard a simple two resistor device that works on a clean power supply, but not sure if that will work on a plasma power supply.  I suspect tip voltage is rather "noisy".  We have one power supply with an automation interface and one without.  Currently using a sound logic THC on that one, which works, but I need to add a PLC anyway for more inputs, so I'm trying to integrate the THC into that as well.

586

General Mach Discussion / PLC With Analog Input

« on: November 26, 2010, 12:30:50 PM »

If I had a PLC (DirectAutomation DL-05) with analog input capability of 0-10VDC, could I monitor that voltage in Mach using a brain?  My thought is to use this device as a THC and Monitor the voltage coming in on the PLC from the voltage divider.  Compare that voltage to a set voltage and trigger the THC up and down outputs as needed.  Could this be done?

There would also be some anti-dive logic involved.  Something like...If actual voltage exceeds set voltage by say 10%, suspend Z movement until voltage comes within range.  Could a brain do this as well?

TIA

587

Brains Development / Stuck on brain

« on: November 26, 2010, 10:54:52 AM »

I know I can turn things on and off based on conditional logic, but what I need to do is set a userDRO = to an OEMDRO if OEMLED(36) or torch lit input is active.  In an if statement it would look like this...

If "Torch Lit" then
   USERDRO(2000) = XPOSITION
End If


Another possible way to do this would instead of continously updating the USERDRO(2000), just set it to XPOSITION the moment "Torch Lit" is lost.

In the brain editor I see an input for "torch lit" and I see the DRO's, just not sure how to connect them all in a brain.   

TIA

588

General Mach Discussion / Re: Problems with Circles

« on: November 25, 2010, 08:48:04 PM »

This is most likely due to your "IJ Mode" under "General Config" being set to Absolute, when it should be Incemental.

589

General Mach Discussion / Re: 2 tools on y axis

« on: November 21, 2010, 09:17:19 PM »

You can activate and deactivate any or all of the outputs as you need.

590

General Mach Discussion / Re: 2 tools on y axis

« on: November 21, 2010, 07:23:54 PM »

You could do it this way...

Zero tool #1 and run the program.  When the program calls for tool #2, do a G92 X3...or the difference between tool #1 and tool #2.  When switching back to tool #1 do the opposite...G92 X-3.