Problem with LWT options

Setup, Configuration and Use Items & Sitemaps
#1

Hello, I have a sonoff with Tasmota firmware and I have configure with this items:

Switch SonoffRoom11_Unreach "Room 11 unreachable" <siren> (Unreach_Group)  { mqtt="<[DomoBroker:tele/sonoff-Room-11/LWT:state:MAP(unreach.map)]" }

How can test the LWT state? How can I simulate an offline state?

thanks

#2

In a rule:
I don’t know what you map file looks like but it would go something like this:

rule "LWT"
when
    Item SonoffRoom11_Unreach changed
then
    if (SonoffRoom11_Unreach.state == OFF) {
        // Do something
    }
end

By using the REST API

#3

I change the question, how can check if my devices are correctly connected? LWT is a correct way? Can you suggest me the API to use for simulate disconnection (exactly command)? Actually I use only the console…I’m beginner sorry…

#4
#5

The REST API

Or the console


With runtime commands

#6

Since it’s just a Sonoff, just unplug it. After a few seconds or so the LWT message should be generated.

#7

I try it but it doesn’t work…I have created an item in habpanel with type Switch and String but both not update if I switched off the sonoff

#8

Have you configured the Sonoff to use the LWT?

Have you confirmed the topic configured on the Sonoff exactly matches the one on the Item?

Use a third party MQTT client like MQTT.fx to subscribe to that topic and see if a message is being published and OH is just not getting them.

#9

Sure! With MQTT.fx is see offline message but it not receive to my items and change the status…maybe I wrong the type of items?

#10

Have you configured the Sonoff to use the LWT?

There are some step to do to enable it?

#11

If you are getting the Offline message to that topic then the LWT is already configured.

Do you see anything in the logs? Perhaps there is a problem with unreach.map. If it isn’t returning ON for Online and OFF for Offline then it isn’t returning a valid state for a Switch Item.

Always look in the logs for errors.

#12

I don’t have unreach.map how it should be configured?

#13

Make sure to install the Map transform.

#14

It wasn’t. I have just installed now. I have to configure it?

#15

See the links above

#16

It’s seems work now! Before appear NULL now OFF and it’s correct! Before I use network ping as workround…

#17

Thank you !