Topics

1

General Mach Discussion / External Estop requested for no reason

« on: June 05, 2012, 05:09:18 PM »

Hey Guys,

I just had a weird thing happen.  I got an estop requested when the button was not pressed.  I reset and it did it again.  I reset and it did it a third time but on this third time it reset itself and started moving again.

The controller has a green light through all of this.  

Any ideas.  Is it possible that the controller is the issue, Mach or both?

S

2

General Mach Discussion / motor settings vs kernel speed

« on: April 22, 2012, 05:49:17 PM »

Hey Guys,

I am looking for some input into the Kernel Speed that is best for my setup.  My comp gets the nicest pulse stream at 25khz and 35khz.  At 45khz the line is still reasonable but a bit fuzzy.

When I run a config test mach tells me that I have my kernel speed to high.

What do you guys think.  I have attached screen shots of motor settings and I have attached the config test.  I am currently running these at 45Khz.

If I can run at 35khz and acheive these 15000mm/min then I would.

Thanks

S

3

General Mach Discussion / Small Values in DRO's

« on: April 22, 2012, 01:49:44 PM »

Hello All,

I find with MACH that it is not unusual to have small values let in the DRO's.  What has prompted me to post this is that it even occurs when entering a value into the MDI's. 

I enter G00 X100.00 and at end of move DRO's read X=100.001.  I understand this "extra" is very very small but just wondering why.  I have no machine attached in this case just "dry" testing MACH settings on my laptop.

So small values...just a relative of CnC life or something else?

S

4

General Mach Discussion / Is it me or Mach...Probably me :)

« on: April 13, 2012, 07:01:34 PM »

Simple workoffset Script.  I am using G92 to "zero" DRO's early in the script which works great.  A short pause so I can observe Zero's across the DRO's.  I use same command at end of Script and I am left with some small numbers in DRO's.  Why is this.  I can use DoOEMButton and get zero's but the G92 does not Zero?

Ideas?

Thanks

S


LoadMatX = GetUserDRO(1017)' read the stored values
LoadMatY = GetUserDRO(1018)
LoadMatZ = GetUserDRO(1019)


DoButton(24)
RefCombination (1 + 2)
While IsMoving()
Wend
Code "G92 X0.00 Y0.00 Z0.00)
Sleep (2000)
Code ("G53 G1 X" & LoadMatX & " Y" & LoadMatY & " F1500")
While IsMoving()
Wend
Code ("G53 G01 Z" & LoadMatZ & " F600")'
While IsMoving()
Wend
Code "G92 X0.00 y0.00 Z0.00"

5

General Mach Discussion / Is there a real difference

« on: April 08, 2012, 04:47:43 PM »

This is probably a simple question but I am wondering this:

 There have been a few reports were small values are left in the DRO's due to rounding.  To be sure that DRO's are zeroed before moving to a position, in my case heading to home after touching off limit switches, I would like to force Mach to zero them.

Is there a difference in using a G92 Command such as G92 or DoOemButton1008,9,10.


s

6

General Mach Discussion / Mach intstalled to H:Drive instead of C:

« on: April 07, 2012, 01:31:43 AM »

Hey Guys,

Do to a partitioned hardrive reserved for Linux I had to install to H:.  Anyone see an issue with this.  I have seen in noted not to change the directory but I had no choice, except to get a new PC, but it still installs to the disk and remains intact.

The only issue I noted so far was that you had to change the directory to which edited Gcode was saved to.

S

7

General Mach Discussion / Lost Steps Found

« on: April 04, 2012, 11:56:03 AM »

Well after nearly a year of searching for lost steps, which of course took untold number of hours and frustration, I happened across this link http://www.candcnc.com/G251-4_FMK.html. 

When testing my z axis one thing I did was write a simple file, as I discovered today is suggested, that would have the axis change direction multiple times.  When ran the file I discovered that with each direction change there was an equal amount of position loss.  I can't remember now but about 20 cycles of direction change on z would equal about 2mm of position loss.

Thought I should post in case there are others out there.  This isssue is likely an old one but always best not to assume.

S

8

General Mach Discussion / Smooth steppers

« on: March 31, 2012, 07:43:10 PM »

Hey Guys,

So I am over wondering if my lost steps are due to a lack of quality pulsing on the part of my pc and I am thinking of either getting a controller from Tormach or saving a few dollars and just getting a smooth stepper. 

Any suggestions?

S

9

General Mach Discussion / Driver Testing?

« on: December 16, 2011, 04:31:08 PM »

Hello All,

I have a very basic understanding of the Driver Test but don't have other tests to compare to so it makes it difficult to decide what is good, ok and not so good.  Any thoughts on this driver test and if there are some simple ways to improve it.


Thanks
Stefan

10

General Mach Discussion / Suggestions for a good MACH Computer

« on: August 10, 2011, 08:25:41 PM »

Hey Guys,

Thinking that I would like to get a new computer to run mach on.  I want to operate at a kernel speed of 45khz and wondering if there are computers that are better at running mach than others.

As I understand the "pulsing" part of mach very little I do seem to gleam from it all that you do want your computer to be able to pulse at a certain rate and with a certain amount of strength. 

Even some direction as to were one could read and learn about this part of mach so I can figure out the best computer for the job.

Right now I find the Acer that i am using a little glitchy.  As well it takes quite a while to open MACH were as on my laptop it is very quick. 

S