[quote=“SeeAge, post:20, topic:92836”]
Maybe you could add some words on how that time offset actually works for my better understanding? [/quote]
This is the difference between the time reported by the device, and your local PC time (ie the time on the machine running OH).
The thing to consider is that the offset should not be constant, but the derivative should be (generally) constant. ie the drift on the PC, and the drift on the device should be constant, and therefore rate between them should be constant. Probably your PC is being updated regularly through NTP, so that will have a 0 drift (assuming it’s updated regularly), and therefore the rate you are looking at is the rate of drift of the device.
What the binding does is periodically request this rate, and when it gets above a certain value, it resets it. So if you were to look at every value, say every minute, you would see this regularly increasing until it is reset.
The first plot in your graph has nothing before it, so this looks fine to me without actually seeing the actual data. The others in general are regular although there does look like there might be a low value in there, but that might be a graph artefact.
Anyway, I hope that helps you understand how this works?