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Messages - mrpeja

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General Mach Discussion / Re: Disable/enable THC300
« on: June 03, 2009, 12:07:39 PM »
I think I misunderstand something.
I mentioned anti dive is for inhibiting torch to dives, when is enabled. (but now it don't works well to me).
What I get if I switch it off?
I want to freeze complete THC function, so torch height will be the same all the time it cuts circle.

General Mach Discussion / Re: Disable/enable THC300
« on: June 03, 2009, 09:26:36 AM »
Hi Hood,
Yes, there is a button on the screen to turn THC on and off in Mach3.
The problem is I don't know how to write a macro. I only know OEM codes for this button and associated led.
Can you help me writting the macro?

General Mach Discussion / Disable/enable THC300
« on: June 01, 2009, 04:37:31 AM »
I'm cutting holes about  2" diameter using arc lead-in and -out. Every time at the end of cut, it seems to me torch touches material. Anti dive is ON.
I think I can avoid this when I disable THC300 when I cut holes. I reference the torch before every cut, so I don't need THC function when I cut holes.
How to do this? And also enable again THC for other cuts.

General Mach Discussion / Re: Dwell after M05 (torch off)
« on: May 18, 2009, 08:53:53 AM »
Hi Jimpinder,
I opened M3 macro. It has only one line:
How I can add G00 Z50?
It seems to me it is not so simple syntax

General Mach Discussion / Dwell after M05 (torch off)
« on: May 14, 2009, 02:12:49 PM »
After  the cut I have set 10 seconds dwell needed for torch cooling. After this SheetCam inserts line like G00 Z50 (go to safe Z).
I need this two things swapped, e.g., first go to safe Z and then 10 sec cooling.
How to tell SheetCam to do this?

General Mach Discussion / Re: THC300 jumps up down
« on: May 11, 2009, 03:43:50 AM »
Hi Dave,
Now is better, but I'm not satisfied yet.
I set Z axis speed  and acceleration slower, testing a couple of times.
Also I changed resistor value in input divider circuit from 330 Ohm to 680 Ohm
I plan to reduce THC300 electronics reaction time, first to adding capacitor to input from sensor board, and if not satisfactory, to implement integrator circuit (I think).

General Mach Discussion / Floating head dives in to material
« on: May 06, 2009, 10:02:33 AM »
When I cut a hole, (arc lead -in and -out) head touches material at the end of cut. I have Anti dive ON, Pierce height 5mm, Cut height 3mm  and Thc300  corrections Max=20mm and Min=-10 mm.
What is wrong?
Please advise

General Mach Discussion / Torch referencing
« on: May 04, 2009, 01:30:05 PM »
I made G code file using THC300-G31 post processor.
I expected to see torch referencing before every hole (hole diameter 45 mm), like is stated in post processor abstract:
"The torch is referenced at cut start and every 500 mm of movement thereafter"
But I didn't see was I expected.
Instead, referencing occurs from time to time, and below is a sample of G code.
I want referencing before every cut, so, before every M03 macro
How to achieve this?

Code sample
N0120 (Process: Plasma,  0, Plasma, 2 mm kerf)
N0130 M06 T2  (Plasma, 2 mm kerf)
N0140 G00 Z50.0000
N0150 X1618.6000 Y726.4000
N0160 Z5.0000
N0170 G31 Z -100 F500.0
N0180 G92 Z0.0
N0190 G00 Z4.0000
N0200 G92 Z0.0
N0210 G00 X1618.6000 Y726.4000 Z5.0000
N0220 M03
N0230 G04 P0.5
N0240 G02 X1620.5676 Y726.0900 Z3.0000 I0.0000 J-6.4000 F1000.0
N0250 X1625.0000 Y720.0000 I-1.9676 J-6.0900 F960.0
N0260 M667 (THC on)
N0270 X1625.0000 Y720.0000 I-15.0000 J0.0000 F1500.0
N0280 M666 (THC off)
N0290 X1618.6000 Y713.6000 I-6.4000 J0.0000 F960.0
N0300 M05
N0310 G04 P15
N0320 G00 Z50.0000
N0330 X1418.6000 Y726.4000
N0340 Z5.0000
N0350 M03
N0360 G04 P0.5
N0370 G02 X1420.5676 Y726.0900 Z3.0000 I0.0000 J-6.4000 F1000.0
N0380 X1425.0000 Y720.0000 I-1.9676 J-6.0900 F960.0
N0390 M667 (THC on)
N0400 X1425.0000 Y720.0000 I-15.0000 J0.0000 F1500.0
N0410 M666 (THC off)
N0420 X1418.6000 Y713.6000 I-6.4000 J0.0000 F960.0
N0430 M05
N0440 G04 P15
N0450 G00 Z50.0000
N0460 Y526.4000
N0470 Z5.0000
N0480 M03
N0490 G04 P0.5
N0500 G02 X1420.5676 Y526.0900 Z3.0000 I0.0000 J-6.4000 F1000.0
N0510 X1425.0000 Y520.0000 I-1.9676 J-6.0900 F960.0
N0520 M667 (THC on)
N0530 X1425.0000 Y520.0000 I-15.0000 J0.0000 F1500.0
N0540 M666 (THC off)
N0550 X1418.6000 Y513.6000 I-6.4000 J0.0000 F960.0
N0560 M05
N0570 G04 P15
N0580 G00 Z50.0000
N0590 X1618.6000 Y526.4000
N0600 Z5.0000
N0610 G31 Z -100 F500.0
N0620 G92 Z0.0
N0630 G00 Z4.0000
N0640 G92 Z0.0
N0650 G00 X1618.6000 Y526.4000 Z5.0000
N0660 M03

General Mach Discussion / Re: Soft limits problem, still confused
« on: May 01, 2009, 02:11:58 AM »
Hi dwyersm,
Is solved my problem as follows. Please advise if this is what you mentioned.
First I home Z axis at top, to  switch connected in series with other axes.
On the beginning I inserted code snippet to find material surface and to zero Z axis work coordinate:
G31 Z-100 F500
G92 Z0.0
Then goes code for safe Z
G0 Z50
and etc.
Is this a way to ignore homing Z at the top of travel ?
Should I map the same input (probe) as input to home Z instead of common input for all axes?

General Mach Discussion / Re: Floating head switchoffset
« on: May 01, 2009, 01:53:01 AM »
Thanks Shene,
All advises I got was correct, but, my mistake, I didn't read enough carefully

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