[deadlykitten]

I think the best and easiest way is by writing the vars to a file.

hello hanermo, the cnc operates at the flash memory level; when you use a print/read function, you target a device <> flash, and downtime will appear / kindly

[hanermo]

Maybe some cnc do.
Haas does not.
I think almost all cnc do not.

Any programmer can code the vars to load on macro startup, and to update as needed to file.
It is silly to use direct variables from a file vs a trivial programming effort.

hello hanermo, the cnc operates at the flash memory level; when you use a print/read function, you target a device <> flash, and downtime will appear / kindly

[deadlykitten]

hi hanermo, some downtimes are small, hard to percept ... this makes it hard to guess that something happens; if the frequency is increased, then the downtime may start to be perceptable

to quantify this behaviour, then is needed to record the duration of the process, and this requires an implemented stop watch inside the controller; the higher the resolution, the better

and to update as needed to file

if initializations are done inside the program, then is no more needed to write the values to a file; of course, there are values ( log data ) that can not be initializated inside the program, and in this case it may be ok to store them inside a file / kindly