homing, store corrections in log file ?

Hi.

Can linuxcnc after homing store the corrections in a log file ?

Could be useful during trouble shooting.

As i am doing now

also: I am trying to find the place in the linuxcnc source code where the value of the axis is set to zero after homing.
Can someone give me a hint where to find the place in the git source code ?

Thanks..

Vroemm.

vroemm wrote:

Hi.

Can linuxcnc after homing store the corrections in a log file ?

LinuxCNC stores the offsets relative to the machine home position in the var file
every time it shuts down, so that workpiece offsets (G54, etc.) can be restored
when it is next started up. I think that might be waht you are asking for.

also: I am trying to find the place in the linuxcnc source code where the value of the axis is set to zero after homing.
Can someone give me a hint where to find the place in the git source code ?

This is done in various drivers, so they would mostly be in
src/hal/drivers. In hardware servo interfaces, this is often actually done
in the encoder counter module, external to the PC. When encoder
index pulses are available, the most accurate homing can be performed
when the hardware counter resets its count when the index pulse is
seen. This makes resolution more accurate than the typical 1 ms
\servo thread timing. So, the motion hal component sets encoder_index_enable
and when the index pulse is detected, the counter is zeroed.

Jon

andypugh wrote:

vroemm wrote:

: I am trying to find the place in the linuxcnc source code where the value of the axis is set to zero after homing.

git.linuxcnc.org/gitweb?p=linuxcnc.git;a...fs/heads/v2.5_branch
Line 587.

I think this is what i was looking for.

Thanks !

Vroemm.