Roltek DC620 Integration with ThingsBoard

This guide describes how to connect a Roltek DC620 device to ThingsBoard, configure MQTT telemetry publishing, and visualize the collected data on a dashboard.

1. Go to Entities > Devices and click + to open the add device menu.

   

2. Click Add new device, enter a name for your device, and click Next: Credentials.

   

3. Enable Add credentials, enter the desired Access Token, and click Add to save.

   

Connect the DC620 to the internet via Wi-Fi or Ethernet as described in the user manual.

1. Open the MQTT Settings page on the DC620 and configure the following:

   Field	Value
   MQTT Mode	Enable
   MQTT Broker URI	Your ThingsBoard server hostname or IP address
   MQTT Broker Username	The Access Token set in the previous step

   Click Save.

   

1. On the Rules page, navigate to the MQTT Payloads tab and click Add MQTT Payload.

   

2. Configure the payload to produce JSON output compatible with ThingsBoard telemetry:

   Field	Value
   Payload Type	JSON
   Header	{
   Pattern	"$V":#V
   Separator	,
   Ending	}

   Click Save.

   

1. On the Rules page, navigate to the MQTT Publishers tab and click Add MQTT Publisher.

   

2. Configure the publisher:

   Field	Value
   Period	Your desired publish interval
   QoS	Your preferred QoS level
   Retain	Your preferred retain value
   Topic	v1/devices/me/telemetry
   Payload	The payload created in the previous step
   Tags	Select the tag or tags to publish

   Click Save.

   

1. Go to Entities > Devices, open your device, and navigate to the Latest telemetry tab. Click on a data row and press Show on widget.

   

2. Choose a widget bundle matching your data type, select a chart, and click Add to dashboard.

   

3. Select Create new dashboard, check Open dashboard, and click Add.

   

4. The dashboard opens with the widget displaying live telemetry from the DC620.