after a long time of running an openhab instance with many things i have upgraded to the newest version and try to “migrate” some of my things to use new functions of OH. I have read the docs and try to find answers in the community, but i even have an understanding problem:
If if have an Equimpment in the Modeldesigner, i can add “Points” to this. I dont unterstand the difference between Points and Items. In the Modeldesigner i cant add existing Channel-Links/Items as Points but if add a new Point it seems to be an Item with different Name.
- I have created an Thing “Thermostat” and created an item “TargetTemperature” with “add link to Item”.
- Now i cannot “connect” TargetTemperature to an Equipment, but if i delete “TargetTemperature” and create over the Modeldesigner it seems to be the same thing…
I hope the explanation is understandable…
PS: I am suprised how active and professional the development is and have to say thanks to the great poeple who do that job!
Thank you very much!
Just go to the Item, enter edit mode and change the parent group to your equipment in the model.
It’s all Items. What differentiates them are the semantic tags. A Location is a Group Item with a location tag. An Equipment is a Group Item (rarely they can be other types of Items) with an Equipment tag. A Point is any Item that has a Point tag and optionally a Property tag.
So, there is no difference between a Point and an Item. All Points are Items but not all Items are Points.
The semantic model is a way to structure and view some of your Items from a physical hierarchical view.
I think this is something that trips people up.
Also, I wish there were a way to modify the Location/Equipment that Items belong to from the Model View. I think that too might avoid some confusion (drag and drop would be awesome!) But I think there are higher priorities right now.
Anyway, the confusion is understandable and Hans-Jörg absolutely has the current approach to do this. I just wanted to fill in a little of the background.
Also, this is one reason why I recommend using “Create Equipment from Thing” and “Create Points from Thing” to create the Items in the first place. It’s a little awkward to add an Item that isn’t already in the model to the right Equipment/Location.