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If I recall correctly SSCNET-III needs a 222us cycle time which might be too fast for the MESA but I don't know. A regular step/dir driver would certainly make things a LOT easier. You can likely find a MR-J3-100A for around the price of the SSCNET-III interface card and be able to run it all over the MESA.

[edit]
Be advised that the Mitsubishi drives emulated encoder output have a time lag when you run it in position command so you may want to add an external encoder to your rotary if you want to have a position loop in linuxcnc but you could of course also just trust the drive:
forum.linuxcnc.org/10-advanced-configura...pain?start=30#193073
I had the same issue using  Mitsubishi MELSERVO J4 drives with step/dir.

CopperHead wrote:

I'm not sure if i picked the right place for this, But i'm curious, there is a piece of software out that allows you to set a kerf width and nudge lines. to ensure you don't have your lines too thin during plasma cuts. I think Design Edge does this from Plasmacam but i'm wondering if there are any others that can do this as well or play Monkey Mart Game  ?


 

Design Edge from Plasmacam is a good option, but other software like SheetCAM and Fusion 360 can also handle this.

I need a solution to my problem right now

@Cong
Double post deleted

Hello 
Thank you for all the work done

is there a way to open a tab (for example facing) directly with a physical button?

I tried to do so but without luck yet
Thanks

sorry
i mean tool change need precise

50mm pitch?

What is the actuator - do you have a picture?  If it's only doing it in one direction there may be an issue with the actuator or related mechanicals.

A cursory look through the manual (I think it's the right one) looks like the MR-J3-100B can also take +10v/-10v analog input control.

If so - and you'd better make sure I'm not way wrong - you could use a Mesa analog board to control it.

On the other hand, if you're using step/dir for you other drives new servos are getting so cheap it might make sense to just buy a new one and fit it up.

Side note - when I put a servo on my 4th, I found it extremely helpful to have a very precise home-to-index function.  Really cuts down on the typical fiddling getting a trunion table or vise dialed in.

Whatever servo you wind up with, try to ensure it's got an encoder index signal output, and you've got a couple free inputs (one high speed and one for a home proxy).

Greetings,
is there any "python" programs or solution for generating g code with custom shapes,
square triangle circle like

thanks

I’m in the process of building a 4th axis for my linuxcnc mill.  My Mill is a Matsura MC-500 and is based on MESA boards via ethernet and QT dragon w/Linux 2.9.
I’ve aquired for cheap two new HF-SP-102 motor (1KW) with high load and high precision harmonic drives from "Harmonic Drive LLC" that are integrated (but can be separated) for $25/each, I then found the servo driver for it MR-J3-100B amp on ebay, and got the cables to connect it for a few hundred.
I’m now trying to work out how to connect it to the PC and drive it but it doesn;t seem that straight forward as the servo driver support SCNET-III.  I saw some posts and links to Dimitry's site(www.yurtaev.com/), but my PC is an all in one touch screen and I;m not sure it has PCI slot.
I perhaps I could get a MR-J3-100A driver as it uses a 'general' interface (not SCNET-III)

I probably got a bit excited with the cheap motors and gear boxes and just assumed it would be straight forward to get the electricals working (oops).  What do you think is the best way forward?  Buy a card from Dimitry and a new PC and touchscreen, or should I get a different path that is supported by the MESA boards and non PCI ie buy a different motor+servo and make the adapters to the Harmonic reducer units I have.

Cheers,
Cam

What is tricky?

Hi Hakan, thank you for the informations,

during the servo configuration there are a lot of parameter to tweak, are there any parameter that can fry the driver/motor?

a bit tricky with the hsk stand, it needs to be very precise

Currently the step setting is 1000 and i tried 800, 25600 and 12800 (yes i changed scale accordingly) no major change and the best setting was 1000 imo.

It is vibrating alot after a certain point on the axis and if i just support the load on it is completely fine.

and the main thing is on going up there is no vibration at all.

The pitch of the linear actuator is 50mm.

Your in file has some errors

Remove the comments X'd or on red in the image below

You had calls don't match the file names, it won't fine the hall with an incorrect name, post gui is also wrong name.