RS-485/422 is a multifunctional RS-485/422 interface optical fiber MODEM. It is the best choice to connect the remote terminal unit (RTU) to the host computer (HOST) or the distributed data acquisition system (SCADA) controller. The product uses optical fiber as the transmission medium, which improves the transmission performance of the system and effectively avoids the threat of lightning strikes, surges and electromagnetic interference to the communication equipment in the harsh environment.

Product features

◆ It can simultaneously support two-way half/full duplex RS-485/422 data

◆ Adaptive single multimode fiber

◆ Zero delay automatic forwarding

◆ Asynchronous transmission, point-to-multipoint application, RS-485/422 interface and optical fiber conversion

◆ Automatically detect serial port speed, identify and control data transmission direction

◆ Maximum communication rate>500Kbps

◆ 5VDC voltage input, external power supply

◆ SC/FC interface optional, FC interface by default

◆ Working wavelength: 1310nm/1550nm

◆ Interface provides 1500W surge protection and 15KV static protection

◆ 2 km for multimode communication and 20 km for single mode communication

◆ RS-485/422 supports 32-bit polling

◆ Application scope: industrial automation control, access control, all-in-one card, parking lot and other systems

Communication indicators

Standard conforms to EIA RS-485 standard

RS-485 signal T+, T -, GND

RS-422 signal R+, R -, T+, T -, GND

Optical fiber signal IN, OUT

Working mode: asynchronous, point-to-point

The direction control adopts the data flow automatic control technology to automatically identify and control the data transmission direction

Baud rate 0-500Kbps, automatic detection of signal rate

Optical fiber wavelength 1310nm/1550nm

The transmission distance of electric port is 1200 meters from RS-485/422 port

Optical port transmission distance: 2 km for multimode and 20 km for single mode

Interface protection 600W surge protection, 1500V static protection

Load capacity RS-485/422 port supports 32 nodes (128 points can be customized)

Electric port form 5-position terminal block

Optical port form SC/ST/FC interface

Environmental indicators

Working temperature - 25 ℃ to 70 ℃

Storage temperature - 40 ℃ to 85 ℃

Humidity Relative humidity 5% to 95%

Appearance index

Length × wide × 100mm high × 69mm × 22mm

Shell iron shell

Color computer white

Weight 230g

Power index

Input power supply AC220V~DC5V

Power consumption 2W