WQS-LB (TURBIDITY SENSOR DR-TS1)

[Claudio Churque]

Hello Dragino Support,

I am testing a WQS-LB Water Quality Sensor with a DR-TS1 Turbidity Sensor.

The WQS-LB is running firmware version 1.3.1 (AU915).

• FIRMWARE_VERSION: "1.3.1"
• FREQUENCY_BAND: "AU915"
• SENSOR_MODEL: "WQS01-LB"
• SUB_BAND: 0

The LoRaWAN communication is working correctly through ChirpStack.

The ChirpStack payload decoder has also been updated to the corresponding WQS-LB firmware version.

I have tested other water quality sensors with the same WQS-LB and they are detected correctly, including the pH sensor and EC sensor.

However, the DR-TS1 turbidity sensor is not detected.

When the DR-TS1 is connected, the WQS-LB sends uplinks but the sensor type field indicates no detected sensor. No turbidity value is reported.

The WQS-LB is working correctly because other sensors (pH and EC) are detected and provide measurements.

I would like to confirm:

1. Does DR-TS1 require a specific Modbus address or configuration before connecting to WQS-LB?

2. What Modbus communication parameters does DR-TS1 use?
   - Modbus address
   - Baud rate
   - Register address for turbidity value

3. Does WQS-LB automatically detect DR-TS1, or is there any configuration/command required?

4. Does DR-TS1 need an external DC 10-30V power supply, or can it be powered directly from the WQS-LB RS485 interface?

5. Is there any AT command or method to manually test the RS485 communication between WQS-LB and DR-TS1?