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Author Topic: THC300/Mach3 Touch off issue  (Read 12538 times)

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Offline jeremyrockjock

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Re: THC300/Mach3 Touch off issue
« Reply #10 on: May 09, 2011, 08:07:06 PM »
If I issue g1 z-1.000 in the mdi the torch moves down. I have set my varible offset at .275 and pierce height at .100 but I don't see them in the code.

Here is the first part of the code.
N0000 (Filename: Roof Rack clamp HWE style scaled up.tap)
N0010 (Post processor: Plasma THC300 - G31.post)
N0020 (Date: 5/8/2011)
N0030 G20 (Units: Inches)
N0040 G53 G90 G40
N0050 F1
N0060 S500
N0070 (Part: Roof Rack clamp HWE style scaled up)
N0080 (Process: Plasma,  0, Plasma, 0.0008 inch kerf)
N0090 M06 T0  (Plasma, 0.0008 inch kerf)
N0100 G00 Z0.1575
N0110 X-0.1600 Y-0.1604
N0120 G31 Z -100 F19.685
N0130 G92 Z0.0
N0140 G00 Z0.0000
N0150 G92 Z0.0
N0160 G00 X-0.1600 Y-0.1604 Z0.1000
N0170 M03
N0180 G02 X0.0000 Y-0.0004 I0.1600 J0.0000 F60.0
N0190 G01 X1.0400
N0200 G03 X1.0404 Y0.0000 I0.0000 J0.0004
N0210 G01 Y3.1200
N0220 G02 X1.9896 Y3.1200 I0.4746 J0.0000
N0230 G01 Y0.0000
N0240 G03 X1.9900 Y-0.0004 I0.0004 J0.0000
N0250 G01 X3.0300
N0260 G03 X3.0304 Y0.0000 I0.0000 J0.0004

Offline jeremyrockjock

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Re: THC300/Mach3 Touch off issue
« Reply #11 on: May 09, 2011, 08:12:51 PM »
Also When I run the processor it says I have 0 on the feed rate and the plunge rate but I have set both of those to 30 and 50 prior to running post processor.

Offline BR549

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Re: THC300/Mach3 Touch off issue
« Reply #12 on: May 09, 2011, 08:33:55 PM »
If you are going to use the G31 you MUST set up your Zhome switch as a probe and setup the port/pin for the probe.

Also your setbacks are not set for the pull back on the head after it homes.  You must test your setup to determine the proper pullback to account for switch movement and flexure of the material. If you have to keep adjusting the allowance until it IS what it say it is.



I would slow down the plunge rate untill you get used to  the process it is very easy to tear the head off if you get it hung up.

IF the post says 0 feedrate then you need to reset it to the correct speeds.

ALSO your code show the Kerf width as .0008  (;-) You need to set it to the correct amount , normally around .060-.080" works here.

That should get you started, (;-) TP
« Last Edit: May 09, 2011, 08:37:30 PM by BR549 »

Offline jeremyrockjock

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Re: THC300/Mach3 Touch off issue
« Reply #13 on: May 09, 2011, 08:53:01 PM »
Are you saying use the "probe" in the inputs and set to the pin I have for the z home switch which is 13. If so I tried but it does not respond when I make the switch. However I know the switch work because it shows under z home input if I set up the pin under that.
I setback is set but sheetcam is not processing it. Same with the pierce height and the feed rates. Its like the latest sheetcam software is a dud. It will not process my changes.

Offline BR549

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Re: THC300/Mach3 Touch off issue
« Reply #14 on: May 09, 2011, 10:07:28 PM »
I am using the same Sheetcam software and there is nothing wrong with it. (;-)

Where are you setting the setback? it is set inside the Post you have to use edit to set it.

The feedreates are set in the tool settings for the selected tool.

The probe sets up with the same port/pin you used on the Zhome. You turn OFF Z home. Then turn ON the probe. When you click the switch you should see the input for the probe light up as you did the Zhome . You should NOT see the Zhome light up any more.

What post are you using ??

(;-) TP

Offline jeremyrockjock

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Re: THC300/Mach3 Touch off issue
« Reply #15 on: May 09, 2011, 10:17:25 PM »
I think my sheetcam issues might be attributed to the fact that I lost my licence file when I hard drive crashed. I email them to get a new copy.

I turned off the z home input and set the probe input to the proper port/pin but it was not reading the switch. I even tried automatic setup.

I am using post processor Plasma THC300 with G31

Offline BR549

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Re: THC300/Mach3 Touch off issue
« Reply #16 on: May 09, 2011, 10:25:39 PM »
You need to figure out the input problem .IF it worked with Zhome it should work with the probe. Double check your Port/pin settings, make sure the probe input is checked active.

Are you in demo mode with MACH??

(;-)TP

Offline BR549

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Re: THC300/Mach3 Touch off issue
« Reply #17 on: May 09, 2011, 10:38:17 PM »
OK i just tested the Post and it works fine IF you have the setback set other than 0. 

You are editing the post to set the setback correct?

(;-) TP

Offline jeremyrockjock

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Re: THC300/Mach3 Touch off issue
« Reply #18 on: May 10, 2011, 08:07:05 PM »
Okay. I finally got a response for input "probe Switch" and set it for my touch off switch.  I reloaded sheetcam, added the license file and it will still not generate the code for the varible offset. Whill sheetcam not autogenerate all the code I need to run g31 or will I have to edit every file I create?

I am running a licensed mach3.

Offline jeremyrockjock

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Re: THC300/Mach3 Touch off issue
« Reply #19 on: May 10, 2011, 08:48:10 PM »
I don't think the problem with the offset is in sheetcam. When I load the code in mach it flashed (error post varible torch offset =.27)
Mach does not like my offset code.



Although when I look at my code in notepad it does not show the offset value. I am so confused.  ???
« Last Edit: May 10, 2011, 08:51:21 PM by jeremyrockjock »