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Hi
I have developed a method to center punch locations for drilling holes on my PlasmaCNC setup.I use CAD software (Fusion 360) to locate where I want holes drilled in my finished cut parts. I use fusion to show the location and size of the holes and then use the snap function to locate the centers. I do this with the circle sketch function snapped to the center then draw a 0.003” dot there. After saving in DXF format and importing into SheetCam I change the layer of the dots to separate the center punching from the normal cutting operations. I then have a tool in SheetCam that has the perimeter for the center punching operations. This has the pierce and cut height set at the same height and lower the Amps some for this operation. After planning the whole operation I select the center punching functions into on G-code and then the cutting function into another G-code. SheetCam will ID the center punching as a inside cut and you can make one G-code where it will do the 2 operations in the same G-code. QTPlasmaC seems to have a quicker response for this operation then I had with other controller software, but both produce a very nice dimple in the metal.Attached are images of the center punches and a video of the operation.  I have used this method on different thickness metal with thin metal using the fine cut nozzle. I have used it to create a template for hole marking by center punching a thin plate to transfer the locations on another project surface.

drive.google.com/file/d/1EtZ_7zD49-VbqYf...sVL/view?usp=sharing
       

Try omitting that line with scalemax, right now i can not recall i ever used it.
Just add # in front of the line, save, test.

I use Ditron magnetic scales all the time. Installed my first ones in 2019 on my 5 axis machine. Since the I have used installed about 20 of them. Not a single failure yet.

Be sure to specify that you want 1um resolution. Reader head model DMR2000. And also specify that you want the index pulse version (z signal) otherwise you get only A and B.

Yes. They are differential output

Henk

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Hi,
only one 7c81, you tip has done the trick. Thank you!
but the next problem occured
The error changed to:
/intos.hal:88: parameter or pin 'hm2_7c81.0.7i77.0.1.analogout0-scalemax' not found

so checked this line in the old, working hal, without the 7i78, and its exactly the same. What does change here when i use 2 daughterboards?
Any Ideas?

EDIT:
i have also tried to change the channel number to 0:
hm2_7c81.0.7i77.0.0.analogout0-scalemax'
and 2 and 3

Es siet die 5V fuhr die Mesa nicht OK zu sein, haben sie ein andere 5V strom wers... (power supply, forgot how that is written in German, sorry) zum testen, oder ein DVM die 5V zu messen? Es soll zwishen 4.75 und 5.25V sein.

unknown wrote:

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I'm thinking of leaving everything and heading for woods to live there!
The issue is, we have no woods left, it's all been cut down, except for some bushes, and i can not hide behind those!
Painfully true, i am surrounded by huge mountains that have no more trees, at all.
But i do smoke, since i do not drink nor gamble nor ....

jackdavies wrote:

The Y axis has dual motors, should I use a scale on each side or just one?
Any recommendations of mesa boards to use here? 7i95T + 7i84U or 7i96 + 7i85
Whats the process for setting this up in LCNC?
I don’t believe these scales are differential signal, should I look for that?

1. You should, the expense does not justify having missed steps on one side and ending up with a miss aligned gantry
2. For step/dir drives, 7i95T should be enough if you do not need a lot of IO. So a 7i84 would be required on both combos if you do need more IO.
3. a bit of editing will be needed either way, plenty of info and help here once you get to that point
4. differential are better for noise immunity, but Mesa works with both differential and single ended. They should be incremental TTL, as far as i know. Absolute type would require other boards/config/ depending on type of comms.