Fist of all, many thanks to all of you for taking the time to write suggestions and trying to help!
It´s very much appreciated and I´m happy to be here
I checked and tested once more. Still, I don´t get any Log-file even though verbose logging is activated for INDI and the Mount. No files appear in the log-files directory
I checked again for any discrepancy of the time between mount and KStars but there is none. It also makes no difference if DST is on or off, neither in KStars nor in the Handcontroller. At the moment I have set in both UTC+2h (120min in the hand controller). The time is exactly the same in both - there is one second delay in the HC but I assume that is because KStars is set to update the mount what takes a second (see image).
Still, no automated meridian flip. Another thing that I tested is to approach to a target near both sides of the meridian (as suggested by picciux). Both times I started from the Zero Position. I would expect that the mount would approach the two sides of the meridian via the opposite sides of the pier (we do know already that this is not working but just wanted to test it once more).
So, when I command to slew to a (random) star that is approaching the meridian from the East, the scope slews to it via the West side of the pier, pointing East - all fine. When I go back to the Zero Position and command now to slew to a target that already passed the meridian towards the West I would assume the scope slews via the East side of the pier, pointing West… but it does exactly the same as before. So yes, agreed that Mount and Ekos disagree in something here but why?, time and location match exactly.
I even simulated a plate solving after slewing to the star that was close to cross the meridian and set the solver action to Sync. It succeeded with the info that the mount is synced to the solution coordinates. So, the mount should actually know perfectly, where it´s pointing at. Still, no auto-meridian flip.
Then I did read in the StellarMate FAQs that
„All mounts must be first aligned using the handset using 2 or 3 star alignment before you can use them with StellarMate. The only exception to this rule is…“ EQMod mounts where it is assumed that they point to the celestial pole at startup anyway. There a plate solve and sync shall be necessary. Well, my routine usually is to start up, polar align (via Ekos Polar alignment), then slew to a bright star using plate solving and „slew to target“ for focusing (I don´t have a motor-focus yet) and then slwe to my target, plate solve with „slew to target“ again, start guiding, start imaging… With all this plate solving the system should know quite well where it´s pointing at, right?
Are you other CEM25P users do a 2-3 star align after setup? I never did that since I plate solve.
Running out of ideas and since I can´t save a log-file I can´t provide any new info at the moment.
Will read on a bit
Cheers, Nico