- RS232/422/485 Fiber Optic Modem is a type of RS-232/RS-485/RS-422 serial port fiber optic Modem.
- It adopts industrial standard design and its wall type outface design supports DIN-rail standard lead rail installation, featuring easy installation.
- Presently, many users make use of RS-232/RS-485/RS-422 serial port fiber optic Modem to solve the electromagnetic interference in engineers and to extend the RS-232/RS-485/RS-422 serial port transmission distance to several or even tens of kilometers.
- RS232/422/485 Fiber Optic Modem can provide users with RS-232/RS-485/RS-422 serial port end-to-end transparent transmission.
- Since signals are transmitted over fibers and these optical signals are free of electrical conductivity, they have strong anti-interference capacity and are immune to high-voltage power or thunders.
| Standard | In compliance with EIA RS-232 and RS-485 standards |
| RS-232 signal | IN, OUT, GND |
| RS-485 signal | D+, D-, GND |
| RS-422 signal | R+, R-, T+, T-, GND |
| Fiber signal | IN, OUT |
| Working mode | Asynchronous working mode, point-to-point |
| Direction control | Adopting automatic data flow control technology, supporting automatic judgment and control of data transmission direction |
| Baud rate | 0-500 Kbps, automatic detection of signal rate |
| Fiber wavelength | Multi-mode: 850 nm; single mode: 1310 nm |
| Transmission distance of electrical interface | RS-232 interface: 15 meters; RS-485/422 interface: 1200 meters |
| Transmission distance of optical interface | Multi-mode: 2 km; single mode: 40 km |
| Load capacity | RS-485/422 interface supports 32 nodes (128 nodes customizable) |
| Interface protection | 600W surge protection, 1500V ESD protection |
| Form of electrical interface | 8-pin connector |
| Form of optical interface | ST interface for multi-mode transmission and FC interface for single mode transmission |
| Operating temperature | -25°C to 70°C |
| Maintaining temperature | -40°C to 85°C |
| Humidity | 5%-95% RH |
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Carton box, wooden pallet