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Messages - Tweakie.CNC

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7371
General Mach Discussion / Re: axis problems
« on: March 06, 2011, 03:37:28 AM »
If you are trying to learn how to use your new machine and you wish to use imperial units then Mach should really be set-up in imperial units.

Yes you may have to redo your motor steps but this is not rocket science and getting everything right now will save you lots of grief and configuration problems in the future not to mention possible problems with imported GCode from other programs.

Tweakie.

7372
Lance,

All the VFD's I have used have had separate inputs for CW and CCW rotation and these are connected to separate output pins from Mach, one mapped to M3 and one to M4. This then lets the GCode specify CW or CCW operation with the M3/M4 commands.

Tweakie.

7373
General Mach Discussion / Re: Possible G2, G3 bug
« on: March 06, 2011, 03:03:21 AM »
Phil,

I think we have all been caught out by this one sometime or another   ;)

Don't spend too long with the manuals either, life is far too short to read all the manuals  ;D

Tweakie

7374
General Mach Discussion / Re: Steppers and mach out of sync
« on: March 06, 2011, 03:00:24 AM »
Quote
to cut a long story short my x axis which is directly driven by a leadscrew will not consistently match up with the DRO readings in mach 3.

For this statement to be true the step pulses that Mach sends out are not being translated correctly by the stepper motor.

Have you thoroughly checked all the obvious mechanicals such as slipping coupling joining leadscrew to motor, tight or binding spots on the slides or leadscrew, anything loose etc etc ?

Tweakie.

7375
General Mach Discussion / Re: AutoZero Plate for Z Axis
« on: March 05, 2011, 12:05:32 PM »
Nicolas,

I am sure you will figure out the way to do it.

I'm off home now, I will check on your progress on Monday.

Tweakie.

7376
Show"N"Tell ( Your Machines) / Re: Thrown together coil winder ;)
« on: March 05, 2011, 11:47:21 AM »
Now that's what I call Scottish innovation.  ;D

Tweakie.

7377
General Mach Discussion / Re: AutoZero Plate for Z Axis
« on: March 05, 2011, 11:42:35 AM »
Nicolas,

Just to be sure I have altered your diagram to reflect the same series connection of the switches although I am sure that you know what to do now anyway.

Tweakie.

7378
General Mach Discussion / Re: AutoZero Plate for Z Axis
« on: March 05, 2011, 11:30:34 AM »
No, good try but not right. See diagram.

Tweakie.

7379
General Mach Discussion / Re: Possible G2, G3 bug
« on: March 05, 2011, 10:52:10 AM »
Try changing the IJ Mode setting on the General Logic Configuration page and see if this cures it.

Tweakie.

7380
General Mach Discussion / Re: AutoZero Plate for Z Axis
« on: March 05, 2011, 10:42:23 AM »
You have incorrectly connected the two sets of limit switches in parallel.

Connect them in series.

GND-----switch----switch----switch----switch----PIN 11

Tweakie.

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