Hello,
i need a while to under stand it.
And i want to create a small tutorial for this topic:
HOW TO SEND/PUBLISH GPS AND SYSTEM VALUES OVER MQTT
Switch to ADVANCED Mode.
Enable GPS:
![enable_GPS](https://community.teltonika-networks.com/?qa=blob&qa_blobid=11123463261594376803)
Activate MODBUS with a MODBUS TCP SLAVE:
![](https://community.teltonika-networks.com/?qa=blob&qa_blobid=12089219854771918432)
Create a MODBUS MASTER:
![](https://community.teltonika-networks.com/?qa=blob&qa_blobid=13001493421215399293)
Add all needed System values here. REMEMBER the FIRST REGISTER ids.
Find more details about the System Values here:
https://wiki.teltonika-networks.com/view/Monitoring_via_Modbus
Enabble MQTT Broker:
![](https://community.teltonika-networks.com/?qa=blob&qa_blobid=15365955875331067866)
Send MODBUS data to MQTT Broker with the DATA TO SERVER service
DATA TO SERVER -> ADD
![](https://community.teltonika-networks.com/?qa=blob&qa_blobid=7868091759931648306)
![](https://community.teltonika-networks.com/?qa=blob&qa_blobid=17799134724432958733)
Now you can connect to the MQTT Broker to the GPS topic.
The router publish all you data the the REGISTER ID and the VALUE to this topic.
Have fun.