Draft: extract main parameters from output channel

@hammerd would this fix the issue of the main parameters not being accessible from machines not on infiniband, described a the end of https://redmine.xfel.eu/issues/160688?

assigned to @amunnich

In theory it would, yes, as device property updates go over the broker. I am not sure we want to update properties at 10 Hz, though - even if it's not enough to upset the broker, it is kind of a lot, especially if we also aim to send some preview image.

I was thinking we could add a dedicated output channel for the saturation monitoring addon. Then we just need to make sure that that output does not bind to infiniband. Will make a draft ASAP.

mentioned in merge request !104 (merged)

Ok, thanks for looking into it again. I will close this MR and delete the branch.

closed