The TRANBALL QR3613B user manual details communication interfaces, technical specs, wiring, and configuration commands for temperature and humidity monitoring.
This manual introduces the QR3613B sensor, which uses an industrial‑standard RS485 MODBUS‑RTU interface and supports multiple output options such as RS232, CAN, 4‑20 mA, ZigBee, LoRa, Wi‑Fi, GPRS and NB‑IoT. It is designed for monitoring temperature, humidity and other status variables with high‑precision internal sensors.
The document provides detailed wiring diagrams, application examples, and step‑by‑step instructions for reading and modifying device parameters (address, baud rate, calibration values) via MODBUS commands. Example command frames and response formats are included for easy integration with PLCs, DCS, or other control systems. This manual is written in Chinese.
| Communication Interface | RS485 |
|---|---|
| Default Baud Rate | 115200 |
| Power Supply | DC5~24V 1A |
| Display | 1.8 inch TFT color screen |
| Storage Capacity | 8 M |
| Maximum Records | 65000 |
| Operating Temperature | -40 °C to 80 °C |
| Operating Humidity | 5 %RH to 90 %RH |
Send the MODBUS query frame FA 03 00 66 00 01 71 9E; the device will respond with its current address.
Use the command 01 06 00 67 00 05 F8 16 to set the baud rate code to 5, which changes it to 38400 bps.
Send 01 06 00 6B 00 64 F9 FD to increase the calibration offset by 100 units; the device will confirm the change.