Linking one item with two channels

Setup, Configuration and Use Items & Sitemaps
1

Hi There,

I’ve updated my openhab installation from an old 2.0 Beta to the current 2.4 Stable release.
But with this update, my link to mqtt stops working.

I’ve got this configuration:

Number:Energy  Energy_Consumption_External_Supply      "Fremdbezug [%.0f kWh]"   <powerplant>  (gCounters)  { channel="smartmeter:meter:evs:1-0_1-8-0", mqtt=">[mosquitto:openhab/slave/smart_meter_external_supply/state:state:*:default]" }

With OH Beta 2.0 updating the smartmeter-channel (in fact it was a zwave channel in the old installation) leads to an update on the mqtt channel. But now it seems to happen nothing…

Any suggestions what went wrong? I don’t want to add every item twice and write rules for updating the remote items - that’s annoying.

Bests
Pascal

2

I believe you are supposed to delete & rediscover your zwave things.
Try that first.

3

Maybe my question is too confusing. I’ve got the problem now with the smart meter binding.
And I didn’t upgrade, in fact I’ve installed OH from scratch.

4

You did reinstall MQTT binding v1 as well / instead of MQTT v2 ?

5

No, I’m on MQTT 2 now. Do I need the legacy binding?

6

This is an MQTT-1 Item configuration -
mqtt=">[mosquitto: ....
You’ll need ro convert to things & channels for MQTT-2 binding, they are not compatible at all.

1 Like
7
8

I’ve tried MQTT-2 Configuration (even before moving to the old style) but it didn’t sent anything to mqtt.

9

Well, MQTT-2 in general works for other people.
But it will never work with MQTT-1 configuration, its different.