Messages

1

General Mach Discussion / Re: Hesitation between Lines of G-code

« on: February 26, 2011, 12:06:16 AM »

Hi Hood,

Thanks for checking that out. What's the driver test? Seems like I'm discovering new Mach features all the time...

Thanks for the G Code tip too. I'll change my header in my post and config.

Dan

2

General Mach Discussion / Re: Hesitation between Lines of G-code

« on: February 25, 2011, 08:21:46 PM »

Hood here is some code.

G17 G20 G40 G54 G64 G91
...
N660 G00Z1.0000
N670 X27.1768Y4.8232
N680 G01Z0.3700 F15.0
N690 G17
N700 G03X18.8232Y13.1768I-4.1768J4.1768 F90.0
N710 X27.1768Y4.8232I4.1768J-4.1768
N720 G00Z1.0000
N730 X31.2603Y8.9860
N740 G01Z0.3700 F15.0
N750 X31.2611Y8.9720 F90.0


The issue occurs between N700 and N710.

Thanks for the info on the XML. I'll add the IJ code to my header. (Isn't that the G91?)

Best,
Dan

3

General Mach Discussion / Re: Hesitation between Lines of G-code

« on: February 24, 2011, 07:36:38 PM »

Hi Hood,

I've attached my XML. Let me know if there is something I should change.
I am running a 'home brewed' machine (originally brewed by someone else...), with Gecko drives and servo motors.

I appreciate you taking a look.

I have had a strange issue with my General Configurations. Sometimes when I load G Code, my Distance Mode will flip to Incremental from Absolute, where I typically have it. Then I will get an "Abnormal Condition" flashing button and an error at the end of a semicircle line of code, saying the next location cannot be determined (don't have the exact verbage). Any thoughts on that appreciated.

Best regards and thank you,
Dan

4

General Mach Discussion / Re: Hesitation between Lines of G-code

« on: February 24, 2011, 02:11:18 PM »

I don't have it with me but will attach it this evening. Thanks for your response!
Dan

5

General Mach Discussion / Re: Hesitation between Lines of G-code

« on: February 23, 2011, 11:30:15 PM »

I've updated my CV options as described and I still have this problem. I've pulled my motors and observed the pause at the change in code between the semicircles. Any help much appreciated.

Thanks,
Dan

6

General Mach Discussion / Re: Hesitation between Lines of G-code

« on: February 18, 2011, 10:21:03 AM »

I should also say, THANKS for the feedback!!!
Appreciate it!

7

General Mach Discussion / Re: Hesitation between Lines of G-code

« on: February 18, 2011, 10:20:32 AM »

So if I'm understanding, get settings to CV mode, without additional options checked as mentioned in a previous post, and/or add G64 to the initial string/header and I should be good?

I'll try it.

Tested this with a pen to eliminate tool deflection, and I removed the motors, to eliminate the possibility of backlash, and observed the behavior of the shaft: only where the line change in code occurs do I get the dwell/pause.

8

General Mach Discussion / Re: Hesitation between Lines of G-code

« on: February 17, 2011, 09:31:13 PM »

Kmacht, I want to piggy back on your post if you don't mind.

I have a similar problem. It manifests itself in the following way:
When cutting a circle, Mach generates two semi circles split across the y axis. Each semicircle is it's own line of code.
When the code moves from line to line their seems to be a pause, which creates a flat spot in the circle. I have just run this with a pen, rather than a router to make sure I am not having backlash/load problems. Flat spot and line change coincide.

I have some very slight dimension problems which could be explained by this issue as well.

Any thoughts?
Thanks,
Dan