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When I use pncconf to configure the MESA7i92 card, I set the dirhold to 10us, but the actual measurement is about 1ms. It automatically increases the value when executing linuxcnc. This is why I previously mentioned it works correctly on the dm542 (dir use pc817).

mesa7i92 step/dir
 
 

MarkoPolo wrote:

I used your formulas for calculating the center of a circle and created a widget for qtdragon that does it.
(There's also a Python function that calculates the center from three coordinates.)
You're using axis, so it probably won't be useful to you.

 

 

If your willing to donate the code, I'll add it to linuxcnc.

spumco wrote:

I haven't read deeply in to lcec component, but I wonder if there's a polling process to check for changes.  I'd be interested if drives change state on some parameter if they're disconnected.

Looking at the ethercat documentation, the main parameter I can see is lcec.<m>.slaves-responding, which does what it says.
It doesn't appear to refresh that quickly, although that may just be that Halshow is slow to update.
I'd guess should a slave disappear during motion, a joint following error is likely to be triggered quicker.

Installation is dead nuts simple, download the deb, use sneaker net to copy to your pc and install it...

JT

Still can't get halpins to show up, but I used the widget rules to cook up a workaround...

DRO is now sorted.  Red = unhomed, black = homed

Personal preference is not to have anything that can zero out my DRO with one click.  And since I've got a physical 'home-all' button and no need for a 'go-to-zero' function, those could leave the chat, too.

 

I can keep going for now, but I'd still like to figure out the missing hal pins if anyone's got an idea.

I think you will have to do this by editing the hal file

You can use pncconfs "Discover" mode to make it aware of the installed firmware
but I don't think pncconf knows about inm MPG encoders

Hello, I am trying to convert my lathe to LinuxCNC. I am using a Mesa 7I96 and want to connect two MPGs—one for the X-axis and one for the Z-axis—using the standard inputs. Does anyone happen to have an example configuration they would be willing to share?
Many thanks,
Hans

Many thanks.

Bei der Anleitung für pncconf gibt es eine Seite External Controls. Ich komme beim Einrichten von LCNC über pncconf
nicht auf diese Seite. Ich habe übers Terminal die 7i96_inmd.bit auf die Mesakarte geladen. Überschreibt dann pncconf
diese Firmware mit der internen von pcnconf?
 

Im PncConf:

Hello,
when I start LCNC, the axisscreen is minimized and i can it manually maximize. In what kind of way its possible
to start Lcnc in Fullscreenmodus?
Thanks
Hans
 

Here are some older PC's that have been tested for use with LinuxCNC:
forum.linuxcnc.org/18-computer/38838-har...ts-used-pc-s?start=0

I dont think pncconf fully supports MPGs

To add a MPG encoder to TB3 on a 7I96, you would need to

1. use 7I96 firmware that supports MPG encoders on TB3,
like 7i96_inmd.bit
 
2. Connect the MPG encoder count pin  to motions jog
axis and or joint jog pins, something like:
(for 1 MPG controlling all joints.axis)

net jog-counts  hm2_7i96.0.inm.00.enc0-count 
net jog-counts joint.0.jog-counts axis.x.jog-counts
net jog-counts joint.1.jog-counts axis.y.jog-counts
net jog-counts joint.2.jog-counts axis.z.jog-counts

3. Other MPG setup
 The main MPG code can be taken from other MPG examples plus
pncconf may be able to set some of this up but does not support the
inm MPG encoder inputs, so that would require the above connections
at a minimum
 

timo wrote:

Do "old PCs" still have Parallel ports? .
 

Some modern ones do.
There are PCI or PCIe to LPT cards too.
But this does not mean that a given computer is suitable for LinuxCNC because it has LPT port or LPT card.
There are other factors that determine this.

playing around