Using Spindle and Axis C commands simultaneously

One way could be write subroutine with G28 for homing und M101. It's possible to make pyvcp button. Ask google for subprogram linuxcnc button. I never do it before but it must be working.

Hi Rick, did it work? One question, how did you switch the speed and position mode. I'm also trying to switch my A-axis between speed and position mode but it doesn't work. Do you have an example. Can I also e.g. A1000 M3 programming?

Not completely. It still does not work when I run M101 after a M102.
It works in M101 or M102.
Most likely because there is a value left in the Mesa board feedback. User PCW said he added a reset feature to the stepgen in hostmot2. This way I should be able to reset after a spindle mode and run angle mode. Should be released soon to master.
It may also be possible to use offset class to zero out the value.
In my case, I would like to turn the A axis to 0 degrees after a spindle run, so I can keep the correct orientation for A axis mode.

I will work on it more tomorrow. I will paste what I have so far for M101 and M102 tomorrow.

It would be very cool if this can be done though. Lathe with live tools.

The position reset change has been pushed so the stepgen now has a position-reset pin
that zeros the position feedback. Note that you would always use velocity mode for the
steppgen, with the stepgens velocity command coming from the spindle speed in spindle
mode and from the PID component in C mode.

Hi Rick,
with remap is it possible to run a subprogram behind a M-Code. So could it possible to call M103 and this call subprogram turning.ngc.
And in this could go home before switch M101 to turning mode.Unfortnetly i am not able to get this remap running or switch my spindle generally from truning to angle mode.

Hi Chris-
I tried running G91, G28 C0, and M101 in MDI mode. However, the position feedback from MESA is still pushed to the position-fb and joint error pops up.
So I will need to use PCW s new reset pin.
I don't have any experience how to use the new hostmot2 from master.
Do you know how to do this?
I am pretty sure, it will work after this. The only thing left would be to rotate the C to 0 after a spindle run. So you can switch between spindle and angle multiple times without loosing position.

I've tried but the new module doesn't work. I suspect that I'm doing something wrong when compiling.
My way
First package git and build-essential installthen with
load the source.

In the directory ~. / linuxcnc / src / hal / drivers / mesa-hostmot2
I've already found the new source.
compile
Works, but the file is a lot smaller than the original in
/ usr / lib / linuxcnc / modules / and now I get an error message
Maybe someone can help and tell how to compile the new hostmot2.c.

I did the same as you did just now, the hostmot2.so file is around 139kB, the original was 151Kb, and it gave me a pwmgen error. I have tried this on 2.9.0.pre0-241-g92d5600e6.

PCW wrote:

The position reset change has been pushed so the stepgen now has a position-reset pin
that zeros the position feedback. Note that you would always use velocity mode for the
steppgen, with the stepgens velocity command coming from the spindle speed in spindle
mode and from the PID component in C mode.

can you give us a little push. I think we only forgot one file when compiling.

You do not compile the driver with halcompile,
you recompile the LinuxCNC master source
(or fetch a master binary from the buildbot)