RS-232/RS-485/RS-422 Serial fiber MODEM 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

◆ Support RS-232/RS-485/RS-422 interface

◆ Asynchronous transmission, point-to-point application, speed up to 120Kbps

◆ 1500W surge protection, 15KV static protection

◆ RS-485/422 port supports 32 nodes (128 nodes can be customized)

◆ Single-mode optical port or multimode optical port (customized by users)

◆ Working wavelength: 850/1310nm (multimode), 1310nm/1550nm (single mode)

◆ Automatic detection of signal rate and automatic forwarding with zero delay

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

Communication indicators

The standard conforms to EIA RS-232, RS-485 and RS-422 standards

RS-232 signal      IN,OUT,GND
 RS-485 signal         D+,D-,GND
 RS-422 signal        R+,R-,T+,T-,GND
 Optical fiber signal              TX,RX

Power interface         DCIN,GND
 Working mode: asynchronous, point-to-point
 Direction control            Automatic control technology of data flow direction is adopted to automatically identify and control data transmission direction
Baud rate                0-500Kbps,Automatic detection of signal rate
 Fiber wavelength             1310nm/1550nm
 Electric port transmission distance      RS-232 port 15m, RS-485/422 port 1200m
 Optical port transmission distance      Multi-mode 2km, single-mode 20km
Interface protection             600W surge protection, 1500V static protection
 Load capacity             RS-485 port supports 32 nodes (128 points can be customized)
 Electric port form            8-position terminal block

Optical port form        SC/ST/FC Interface
 

Environmental indicators
 working temperature            -25℃~70℃
 Storage temperature           -40℃~85℃
 humidity                   relative humidity 5%~95%
 

Appearance index
 size                    long × wide × high 100mm×69mm×22mm
 Enclosure                    Iron shell
 colour                   Computer white
 weight                   230g
 

Power index
Input power supply           AC220V~DC5-9V
 power waste                   2W