Moving cnc on exit ?

Do you want to press a button or something on the screen to send your machine to some place? When LinuxCNC is shutting down you can no longer move the machine with LinuxCNC.

JT

bladekel wrote:

I need to move z-axis of my cnc through while on exiting the linuxcnc.

It is possible to run a HAL file on exit:
www.linuxcnc.org/docs/html/config/ini_co...id_sub_hal_section_a

The HAL file could unlink the Z-axis position command, then "setp" or "sets" the stepgen / PID to the required position.
Steps would have to be taken to ensure that the f-error didn't trip (unlink the feedpack pins too).

The problem here is that I think the stepgen and pid positions are rather arbitrary, the step or encoder counts might depend rather on where the axes were at startup.

Some careful experimentation with a finger on the _hardware_ e-stop might be needed.

bladekel wrote:

I want to keep axis-Z at 0 position even if i forgot to move it before exiting the linuxcnc.

You could modify Axis to move your axis to that position before shut down but I think that is dangerous plan. I have return to home buttons (as well as home switches) on my plasma.

JT

bladekel wrote:

BigJohnT wrote:

bladekel wrote:

I want to keep axis-Z at 0 position even if i forgot to move it before exiting the linuxcnc.

You could modify Axis to move your axis to that position before shut down but I think that is dangerous plan. I have return to home buttons (as well as home switches) on my plasma.

JT

May be useful for me if it can be done automatically while exiting the EMC.
But how ?

I don't know how because I would not do it.

JT