We recently purchased a DRU Maestro Fireplace running on natural gas. This Fireplace includes a so called “Wifi module” to allow control of the Fireplace using an app on your phone or tablet besides the standard remote that comes with the fireplace. The Wifi module is actually a Honeywell Etherne…

The DRU bridge only allows one simultaneous session/connection. Polling too fast will result in 1 session still open while the other is already trying to establish .. this is most likely the cause of the errors you are seeing. I poll all of my DRU modbus settings at a 10 second interval, but i make…

With the Modbus binding, you can poll all registers in one hit to reduce overheads. [image] snoekieboe: The DRU bridge only allows one simultaneous session/connection By default, the binding will close the TCP connection between polls (thus allowing other apps to have a turn, so you’d probab…

I have 1 ModBUS poller which was running with an interval of 1000ms. Changed it to 5000ms and looks like the errors are gone now. I will monitor it… Update: Unfortunately increasing the interval doesn’t seem to help. I am not writing much values so don’t think that the problem either. See scree…

It’s illegible. Please copy/paste sample error log text. Note that your Modbus things configuration is still secret. EDIT I found out how to view a better image. You’ve got a Modbus Slave Exception Error Code = 11 That means the remote end has rejected a request rom openHAB with a response 11…

Following is NOT a fix, it’s a suggestion to get better use from the bindings retry mechanism in your situation. It MIGHT improve automatic recovery - or it might not. By default, the binding will retry a failing transaction three times before declaring it terminally failed. Because this transact…

[image] petermdevries: ing to share the config I am using, although I don’t know yet the best way to share it as I’ve configured most in PaperUI. Hi Guys, As winter has rolled on, i have finally gotten round to wanting to set this up. i have no experience with modbus (nor node-red) and woul…

Took a stab in the dark - set the Honeywell up as a TCP slave and it looks OK (appears online etc) [image] After this, I had a crack at creating the read register (40203) - this is what I have set: [image] Unfortunately though, this does not work - I get the error: Status: OFFLINE - CONFIGURA…

Modbus is a polling technology. The binding implementation requires a hierarchy of three Things for reading: A Bridge Thing, TCP or serial, essentially defines the “device”. Poller Thing(s), defines a block of registers to be read on schedule or demand Data Thing(s), defines how to interpret one…

Thanks - you’re a legend. I’ll have a crack at it tonight. I thought the 2 steps I had was enough, clearly misunderstood the design, but It’s a bunch clearer now. I suspect this should be enough for me to get going. Thanks Hmmm… a quick look shows this on the poller: I am guessing I only need …

[image] bulletprooffool: I am guessing I only need one? I couldn’t say. It depends on what you want to read, and how often. You may have more than one poller e.g. handling different register types. You may only need one poller to fetch a block of multiple similar registers. [image] bul…

DRU fireplace control using OH2, NodeRed & Modbus

Tutorials & Examples Solutions

rossko57 (Rossko57) December 11, 2019, 8:33pm 25

Do I see you writing individual bits in a register there?
There are other approaches to that - should you need to avoid setting/unsetting other bits in the same register