Messages

1901

General Mach Discussion / Re: gcode preprocess

« on: February 20, 2008, 12:13:55 PM »

Hi Graham

Fair do's

Cheers

Ian

1902

General Mach Discussion / Re: Mach with Kmotion USB controller

« on: February 20, 2008, 12:11:37 PM »

can't figure this out. One minute it says Mach isn't supported, then says it is with a plugin and then makes out like you don't need Mach at all anyway  i.e. It says their gcode interpreter runs on a PC and sends motion control commands to their board (i.e. what do I need Mach for then?) but then says you need an "application" to do this - I just don't get what their stuff is meant to do and what else you need to make it do it.

1903

General Mach Discussion / Re: gcode preprocess

« on: February 17, 2008, 04:22:42 AM »

Hi Ray
there's also the "Ignore M calls while loading" option on the general config screen.
Ian

1904

General Mach Discussion / Re: pcdreh hardware all axes over 1 pinnumber

« on: February 14, 2008, 07:58:40 AM »

My guess is that your current system must use some dedicated hardware to time-division-multiplex the direction pin. There is no way you can do this with Mach - it is strictly a realtime step and direction system.

If your second question is can you use an encoder with steppers like is done as a matter of course with servos then the answer is yes - however as far as I'm aware, Mach has no provision to close an encoder feedback loop - this has to be done at the hardware level.

Cheers

Ian

1905

VB and the development of wizards / Re: Saving DRO values in .txt file?

« on: February 05, 2008, 12:10:49 PM »

Hi DennisCNC - If I understand you're explanation correctly, your problem is scope. In the first file your 4 variables are global with respect to your subs (i.e. "visible" to the subs). When you put your code in Mach buttons however the scope of one button does not extend to another. Your 4 variables are "invisible" outside of the first button. (are you getting a "bad file number" error on button 2? Actually I suspect that your 3rd button isn't actually doing anything either but the flaky VB in Mach is not reporting the error - the file is being opened AND closed by the script in button one - (explicitly opened by your "open" code and implicitly closed by going out of VB scope at the end of file).

Incidentally have you taken a look at the plugin download section - Brian has a thing there called jcode - a jog to gcode tool.

Ian

1906

General Mach Discussion / Re: x will move on its own

« on: January 31, 2008, 09:30:54 AM »

i'm guessing that Brett is correct and you've misunderstood which zero he's talking about - he means the zero after the g not the two zeros after the 5. i.e. g0 not go.

1907

General Mach Discussion / Re: SheetCAM Gcode will not run in Mach3

« on: January 31, 2008, 09:20:06 AM »

You don't give a lot away about what's actually happening - "it doesn't work" is a little vague 

On my system where I have IJ mode set to absolute by default I get error: "Radius to end of arc differs from radius to startLine 78". I checked the I J arguments on line 780 (Mach allways misses the last digit off a line number for some reason) and sure enough they're incremental. Switching mode to IJ inc the error moves on to: "Process: Outside offset outside. Mill/Router. 0.25 inch diameter. 0.75 inch Deep" which means nothing to me - perhaps someone else can take it from here.

Cheers

Ian

1908

General Mach Discussion / Re: Six wire motor wiring

« on: January 30, 2008, 04:30:10 AM »

As you're about to use 203Vs, you can ignore all the stuff about your old drives - it's now irrelevant. Half winding will have half the resistance and therefore twice the current and therefore twice the power of full winding. With a 45V PS your supplying 10* the rated V - not huge but whether it's enough to give you the highest speed you require depends on the drive geometry of your mill.

Ian

1909

General Mach Discussion / Re: rs 232

« on: January 23, 2008, 07:55:23 AM »

glad to help

1910

General Mach Discussion / Re: plasma torch control

« on: January 21, 2008, 07:06:16 AM »

Hi DennisCNC - Thanks for your response.

I guess the bottom line is that candcnc seem to have managed a cheap and (from what I hear) effective solution, so it's obviously "doable". I took a look at Brian's plugin but couldn't figure out how to get it to do anything.

Cheers

Ian