The FS-485G is an industrial‑grade converter that provides isolated RS232 to RS485 and RS422 communication. It uses a DC/DC isolated power module and a high‑speed optocoupler to achieve up to 1000 VDC isolation (3000 VDC on request) and supports multi‑point networks up to 128 nodes.
The manual details power requirements, wiring diagrams, termination settings, and recommended cabling. It also covers installation options such as 35 mm DIN rail mounting and provides guidance for both half‑duplex RS485 and full‑duplex RS422 configurations. This manual is written in Chinese.
| Power requirement | 5 V DC, 100 mA |
|---|---|
| Isolation voltage | 1000 VDC (up to 3000 VDC on request) |
| Maximum communication distance | 3000 m at 4800 bps, 2000 m at 9600 bps |
| Maximum nodes | 128 RS232 ports |
| Maximum baud rate | 230 kbps, auto‑adaptive |
| Operating temperature | -20 °C to 70 °C |
| Dimensions | 85 × 55 × 25 mm |
| Recommended cable | Shielded twisted pair, ≥0.5 mm² cross‑section, 120 Ω characteristic impedance |
Use shielded twisted‑pair cable with a cross‑section of at least 0.5 mm² and a characteristic impedance of 120 Ω.
Up to 128 RS232 ports can be linked together in a single RS485/RS422 network.