ThingsBoard--gateway RTu

### ThingsBoard Gateway RTU Configuration and Usage #### Overview of ThingsBoard Gateway with RTU Support The ThingsBoard Gateway is designed to facilitate communication between IoT devices that use protocols such as Modbus RTU (Remote Terminal Unit) and the ThingsBoard server. This setup allows for efficient data collection from industrial equipment or sensors connected via serial interfaces. For increasing the rate at which groups of interfaces operate when using an RTU license, specific configurations are necessary[^1]. The configuration process involves setting up both hardware connections and software parameters within the ThingsBoard environment. #### Hardware Setup Requirements To connect devices supporting Modbus RTU protocol to the ThingsBoard platform through the gateway: - Ensure physical connection between the gateway device and target RTUs over RS485/RS232. - Verify correct wiring according to manufacturer specifications. #### Software Installation Steps on Gateway Device Install Python packages required by the ThingsBoard Gateway project including `pymodbus` library which handles low-level details of communicating with Modbus slaves. ```bash pip install thingsboard-gateway pymodbus ``` Configure the ThingsBoard Gateway service file (`thingsboard-gateway.conf`) located typically under `/etc/thingsboard/gateway`. Add entries corresponding to each RTU device specifying its address, baudrate, parity settings among others. Example snippet showing how one might configure multiple RTU devices in JSON format inside this configuration file: ```json { "server": { ... }, "devices": [ { "deviceName": "Temperature Sensor", "deviceType": "modbus", "extensionConfiguration": "./conf/modbus.json" } ] } ``` In addition, create a separate JSON file named `modbus.json`, where detailed attributes like register addresses used during polling can be defined per individual sensor type. #### Running the Gateway Service After completing all setups mentioned above, start the ThingsBoard Gateway daemon ensuring it runs continuously collecting telemetry from configured RTU nodes. ```bash sudo systemctl enable --now thingsboard-gateway ``` Verify operation status checking logs produced either directly accessing them or utilizing journalctl command depending upon Linux distribution specifics. #### Security Considerations When configuring access points exposed publicly ensure proper firewall rules limit exposure only allowing trusted networks while blocking unauthorized attempts targeting default ports associated with services involved here especially considering potential vulnerabilities related to older versions listed elsewhere[^2].