Thanks Ken for the explaination. I did some testing this evening with a target that was about to pass the meridian. EQMOD was displaying that the scope was on the west side of the pier and point east. The log file of SGP was also saying that there was a MF (Meridian Flip) coming up, bu that the target was nog yet on the west side of the meridian.
After passing the meridian SGP flipped the scope and all went well. So I went back to my original target I was also shooting the night SGP refused to flip the scope. This target (the Heart Nebula) was in the northeast and I noticed when the scope had slewed to this target that my counterweights were just on the west side of the pier (so just before the lowest point). In theory my scope is then also on the east side (opposite of the counterweights), which was true when looking at EQMOD, which said “pier side east, point west”. Starting SGP it would take only 15 minutes for the counterweights to pass the lowest point and after that EQMOD displayed “pier side west pointing east”. Because the sequence allready started before the counterweights th lowest point I checked the SGP log, but after every frame it still reported that a MF was not necessary because the scope was on the west side of the pier, while in fact it was on the east side.
Because I didn’t want to leave my setup runnng while a MF should take place in 4 hours and SGP still logged that a MF wasn’t necessary while “the scope was on the east side of the pier” I stopped SGP, disconnected all equipment after parking the scope, restarted the PC, started SGP again and opened the same sequence again. Now SGP is logging that it should do a MF, while the scope is on the west side of the pier, but that a MF wasn’t necessary because it was not on the meridian yet.
To make a long story short: it seems that SGP isn’t reading the status of EQMOD during a sequence, but only once in the beginning. If EQMOD reports at the start of the sequence that the scope is on the west side, it won’t do a MF for the whole duration of the sequence. Hope this info is usefull for the next update of SGP (which by the way is the best piece of software I ever purchased!)