Topics

1

General Mach Discussion / Issue with g3 command incremental

« on: October 05, 2010, 12:18:22 PM »

Hi all,

There seems to be a problem with handling the attached gcode at line 245.
This should create a rather huge arc (outline of a ski btw). What happens is that the x-gauge counts correctly (you see the value continously properly counting up)
but the x-axis does not move. Distance mode = Abs, IJ Mode = Inc.

guess it might come from this high value of J...but this should not be an issue

thanks for any help

2

General Mach Discussion / Very bad issue with a .nc file

« on: October 04, 2010, 12:46:05 PM »

Hello,
I just had a crash in my machine, when I loaded and ran the file attached.
When I load the file, I get a "out of limits" warning. Which definitely can't be the case, because the files limits are at about 1700mm. I set machine limits to +/-3000mm.
What happens is: The first axis command is a Z1.5, to lift the tool above the detail. Now Z does not lift 1.5mm, but ... I don't know how far (some cm at least) because I have to emergency stop it.
The z-gauge on the screen is counting correctly, but the axis is getting way more pulses, like if the steps/unit value would have been changed by factor 10. Checked this one: It is still set to the old value.
If I use a different file with a smaller part which is identical up to the point where the Z1.5 command appears: No issue.
If I run the (bad) file in CNC Simulator: No issue.

I am using R3.042.029 and I am not sure whether an update helps.
Anyone an idea except "try it out" :-))

Thank for helping out

3

General Mach Discussion / Arrow Keys don't work anymore

« on: February 08, 2010, 03:02:03 AM »

Hi,
I usually use the arrow keys on my keyboard to drive x,y,z axis to certain positions quickly.

Recently I connected a MPG-wheel via the parallel-port, which worked fine except some 'hick-ups' where every few seconds an axis made a few unexpected steps.
I assumed it came from the unshielded cable I used to connect the jog-wheel to the parallel port, so I disconnected the wheel, removed the parallel port pci card, and also removed the
MPG connector pin configuration.
Now, I can't move my axes with the arrow keys anymore. Anyone an idea how to get the buttons back to work ?

P.S.: Driving my machine through MDI input, g-code etc. works fine...just the arrow keys won't work.

4

General Mach Discussion / Control planer with MACH3

« on: September 17, 2009, 09:08:18 AM »

Gentlemen,
I was reading through a bunch of posts, but did not find any similar question, so I hope some of you may have some good ideas regarding my issue.

My first challenge is this one:
I need to process a gcode-file step per step, depending on an input signal.
The content of the file only controls the z-axis while a sensor mounted to the x axis delivers the pulses.
This does not have to happen very fast.

The second challenge:
These pulses come in constantly, but the code shall not be executed constantly. What needs to happen is this:
I want to push a button (lpt input), after that the gcode of file 1 shall be executed (depending on the pulses, step per step, line by line) unless I push the button again.
Now MACH shall place x at a certain point and load another file.
At this point I will move the workpiece around manually.
When I push the button again, the show shall repeat.

Has anyone ideas ?