User manual for the Sonbest SM1700B protective temperature data acquisition module, covering specifications, wiring, and communication commands.
The SM1700B is a protective temperature data acquisition module that works with SLST1 series sensors and RS485 fieldbus technology. It supports up to 64 sensor points on a single bus and is suitable for applications such as SMT industry monitoring, cold storage, pharmaceutical GMP, and telecom rooms.
The manual provides detailed hardware interface descriptions, RS485 networking guidelines, communication protocol formats, and command examples for reading temperature data, managing sensor serial numbers, and configuring device addresses. This manual is written in Chinese.
| Measuring range | -25°C ~ +125°C |
|---|---|
| Resolution | 0.1°C |
| Accuracy | ±0.5°C |
| Measurement speed | 850 ms per point |
| Channels per bus | 1‑64 points (SLST1 sensors) |
| Baud rate | 9600 bps |
| Supply voltage | DC 6‑24 V, 1 A |
| Operating temperature | -20°C ~ +85°C |
| Maximum cable length | ≤ 500 m |
The module is designed to work with the SLST1 series digital temperature sensors.
The RS485 bus can be extended up to 10 km, allowing long‑distance connections.