MQTT Client app

[Daniel]

What are the settings in MQTT explorer and what in our app?

[Daniel]

Try pinging broker from System-Status-Network utilities

[Fahd]

I can ping from the broker to the lm5 but i cant do the other way

[Daniel]

Check network settings for correct gateway and DNS. It is LM who is connecting to broker.

[Fahd]

Hi, I am sending KNX objects to MQTT using the MQTT Client app on LM5.
I would like the payload to be published in JSON format like this:

{
"value": "<object value>",
"dataUnit": "<object unit>",
"state": true
}

Please how can i do it ?

[admin]

Can be done using a conversion script in the app but it must be done for each object separately. Depending on the object count it might make more sense to make a separate script for publishing object values.

Code:

return json.encode({   value = value,   dataUnit = 'data-units',   state = true })

[Fahd]

Can be done using a conversion script in the app but it must be done for each object separately. Depending on the object count it might make more sense to make a separate script for publishing object values.

Code:

return json.encode({   value = value,   dataUnit = 'data-units',   state = true })

Thaanks

[Fahd]

Hey,
I have a 1-bit GRP address with MQTT direction set to Both. Reading works fine in both directions, but writing has a problem:

Send false via MQTT → LM5 gets true
Send true via MQTT → LM5 gets true

My script:
return json.encode({
value = value,
dataUnit = ' ',
state = value
})
Tried removing the state field too, same result.

---

Writing from lm5 works fine ,

[Daniel]

What is the data format do you expect in MQTT for true and false?

[admin]

Set JSON value path to value

[Fahd]

Set JSON value path to value

same , 

https://streamable.com/pw3spz

---

please watch this , https://streamable.com/pc235o

[Daniel]

Do you have any script in the 'In (From MQTT)' you should remove it and as admin mention just put value in JSON value path in topic config.

[Fahd]

Do you have any script in the 'In (From MQTT)'  you should remove it and as admin mention just put value in JSON value path  in topic config.

After those changes i cant control the object from mqtt, https://streamable.com/qq4ket

[Daniel]

See this
https://app.screencast.com/6OFlzxeNzQcuk

[admin]

Boolean <-> string conversion ON/OFF strings must be empty. JSON value path must be set to value

[Fahd]

Thanks