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Danke dann ist das auch erledigt Dienstag weiß ich mehr ob es geklappt hat
danke

So im trying to understand how to fix this operation. im use to mach3's behavior of soft limits. mach3 keeps the machine coordinates and my part offset, so if i shut down and fire it right back up, i can move the the extents of the soft limits, it slows the stepper shortly before reaching the soft limit and slows it down in speed slower until it hits the limit.

Currently in LCNC, unless i home all first, there is no soft limit, only the hard limit switch i have one side. ignore limits is not selected in the gmoccapy gui. programmed hard limits work on both sides after homing.

I would like it to atleast use the soft limits without having to home first; if i can get the steppers to slow as the limit is reached that would be a bonus. thanks in advance!

bentiggin wrote:

It’s just a  simple pass through breakout.
 

Picture?

G0G53Z148 wrote:

Braucht die 7i76E bei der Netzwerk Einstellung ein Gateway?

Nein.

So I made my first cuts. 
Made some 30mm holes in some square tubing. See photo. Is this what you can get from plasma or can plasma cutting do a better job? 

I use a Hyperterm Xp 45 powermax. 
With a hand torch and a drag shield will quality improve if I use a shield that is made for a machine torch?

 

Ignore the Etherlab errors, that's out of our (and your) control.

PCW wrote:

If you have a combined C axis/spindle, I think the position does really need to be
reset when going back into C mode (Ideally by homing to index or absolute position)
because if you simply do math on the accumulated spindle mode position, you will
eventually lose  position resolution as the position gets huge.

I don't think that this is a problem in practice, though it's definitely something to consider. 

Double-precision float has at least 15 significant digits. If we spend 6 of those to measure to a millionth of a turn, that still leaves 10 to hold the full turns. At 10,000 rpm that is 2000 hours of operation before the sub-turn accuracy degrades to 1/100,000 of a turn. 

Note that that is 2000 hours between encoder resets..
 

M4MazakUser wrote:

I will have to work out how to subtract the whole number from the spindle position and just use what's after the decimal place to get a reference to 360degrees. - more reading....

Take a look at the "orient" HAL component. It's meant for this specific use case. 

If you just make it for yourself, I dont think there is an issue. The moment you sell something ethercat related you made, you have to certify it (very sinplified and there are exeptions). As long as you are considered as an end user, you should be good.

I have to say, an open source cia402 drive would be really cool.

Though the sim INI file might be usable almost unchanged.

tommylight wrote:

Try this, by far the best belt drive system

I agree. Servobelt is a really clever idea. I have designed a few systems that stole the idea (but not built them), Including one that used a belt mounted on an arc for a rotational axis. 

yrsiddhapura wrote:

It might help www.govinfo.gov/content/pkg/GOVPUB-C13-7...a686274dfb3187ad.pdf this paper were writen by NIST(Same institute developed EMC) its use EMC(Linuxcnc's was once EMC)
 

Oh! 

I wonder how far-removed that is from the LinuxCNC codebase? 

The "Canonical comands" that are listed look very much like the LinuxCNC ones that the G-code interpreter generates. 
github.com/LinuxCNC/linuxcnc/blob/master...mc/nml_intf/canon.hh

 

sivaraj wrote:

Yes It is possible to create/add measuring cycle with G-Code by modifying the Linuxcnc interpreter but user program will not be a standard DMIS program

Ah, but, LinuxCNC supports pluggable interpreters. It would be straightforward (though a lot of effort) to write a complete DMIS interpreter for LinuxCNC. 

If you have an old, non-motorised CMM and just want a system to display and log the positions, then LinuxCNC could be a good choice as it has a number of GUI creation frameworks and can count encoder pulses (and other feedback types) accurately and reliably. 

I am currenlty working on an old Faro arm, and in that case I am just setting it up as a USB-HID device. Plug it into your PC and it will just "type" the coordinates into a spreadsheet or text file every time you press the button on the probe tip. 

 

Don't think so regarding the worms. It uses the Simple Open Source Ethercat Slave code
github.com/OpenEtherCATsociety/SOES
There are no licensed tools used, all open source.
And I guess it is enough that it works as an ethercat slave, you don't need to certify it.
And one thing doesn't need to exclude the other. Just saying that it can be done if one chose to.

Freak wrote:

Difficult to say, depends on location, quantities and many other factors, but I would say below 200$.

I had a batch of 50 of the previous (v4) design assembled in China (by PCBAstore.com) and was able to sell the kits (including machined heatsink, fasteners and a laser-cut case) for £88. The assembled PCB came in at £49.50. This was selling at cost. 
I haven't looked at the BoM of this new version, and my order was prior to the chip famine.