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You can add a second servo motor with a gear like HAAS does
I think it's better if the second encoder goes to the mesa card.

If i have this in hal
and this subroutine code

How can change this code to check if spindle is stopped
if i have not set this pin

In reality spindle is connected to mesa daughter card 7i33
and i want to check from subroutine code if it is stopped.

Its parallel port compatible (uses the common "Mach 5 Axis BOB" inside)
So would work with a parallel port or Ethernet/SPI/GPIO/etc device that has a
parallel port like interface.
 

To mechanically adjust the exact same ratio is very difficult
Also with counter chips division maybe can not be integer multiple
so the only real option is to mount and aluminum disk to spindle shaft
and because my spindle shaft from top has the hydraulic cylinder that locks the tool
the only place can put this is only to the downside of spindle shaft.
How many lines must have the disc for rigid tapping ?
Also must have disc with A B and Z signals or only A is enough ?

Just buy a cat.

They're cute and they catch mice.

You can install the encoder before the geartrain if you can electronically or mechanically account for the ratio.

As an example, you coul drive a separate "timing pulley" that is adjusted to the "timing pulley" spins at the same speed as the spindle, then install an encoder onto that.

4520B counters or 4017B counters can be used to divide the frequency of pulses from the encoder.

I had a look at it today again and realized I won't be able to make it work. The backlash in the gearbox will not allow me to machine the part accurately. I'm won't be attempting this any further. Unfortunately this machine was not designed to have a c-axis.

That would be great -- but I'd also be happy with simply max-X and max-Y.

OP-

Thank you, that helps.

Would you like the table to be as close to the operator as possible (max Y) as well as centered on X when the homing routine is complete?  This is how I've configured my moving-table mill.

Hi Guys, 
as easter project, i tried to put 32v von my nvem v2... damn it ...a capacitor blew up
can someone please give the values of it?
i can not read it anymore.
thanks in advance
best wishes

Okay, I think a picture will help.

Homing on 0 works, as in the upper diagram.  But it leaves the bed far from me.  In the title of the thread, I asked whether there's a way to automatically move after homing, so that I end up as in the lower diagram.  I haven't yet tested whether simply setting "HOME" to 12, rather than 0, would accomplish this.  That's because since homing (and even rapids, on my mill) are very slow, I'd really rather skip the extra bed travel, and have it home directly to 12, and stayed there.



 

Hello
I ran a test to verify the problem I have,
that is: on the A-AXIS output (join 3) there is no signal

I enabled all the axes in the .ini .hal file inverted in the nvem-rt1052.txt file, the joint 3 pins (A-AXIS) with the joint 4 pins (B-AXIS)

it happens that joint 3 and joint 4 are inverted and on the B-AXIS output I find the joint 3 signals working, while on the A-AXIS output the join 4 signals do not work,
on the C_AXIS joint 5 output the signals work

it seems that the A-AXIS output on the NVEM card is physically interrupted, is it possible?


       
 

So i must attach encoder of encoder disk to spindle shaft because all other places
i can mount the encoder are not 1:1 gear ratio with spindle shaft.

i was able to bench test the image with the ethercat master installed from the repositories and it works. The only thing i found peculiar was that when jogging with the keyboard i could notice some random jitter in the drive. This did not happen with the amd64 cpu i was using before. I suspect this could just be an issue with the keyboard input on the pi though as that jitter is not present with commands from the MDI

See how you go with the position.

Regards shared himing switches, there is a pin joint.n.is_homing ot similar (check man motion).
If you and2 that with your physical limit switch and use the output to your homing input, the non homing joint will ignore the switch input.