Wait command within python script

Hi there,

i'm using linuxcnc for a 3D-printer.
It all works fine, but there are still some comfort issues:



current state
For printing i need to heat printbed and extruder, which takes at about 10mins.
At the moment i have to sit beside the printer and wait until both have reached target temperature.
And afterwards start the print manually.


target state
I want to automate the wait cycle via a python script, so the printer continues printing after the heating cycle
(other Firmwares use M190 or M109 for set temperature and wait)
Temperature is set and read via a serial interface.


The current script i want to use works fine, if i call it directly from a terminal, but does not work when i call it from within AXIS.
After a few seconds the print just stops completely.
I assume there is some timeout/safetycounter implemented to prevent broken scripts from blocking the whole machine?
How can i get the machine in a waiting state without any timeout?
is there any command in the linuxcnc python module where i can reset this timer?
Should i use M66 or G4 before this script to prevent AXIS from stopping the whole script?

I attached the script i currently work at.

Hi

Nothing attached, rename it .txt or put it in a zip to guarantee it gets attached

regards