MODEL277 Series

MODEL277 Series


  • Support 1 RS-232, RS-485/422 or 3IN1 serial port to 1 fiber port
  • Support advanced communication coding and clock recovery technology to ensure accurate transmission of distant data
  • Support unique "Zero time delay and automatic forwarding" technology

  • Description
  • Specification

MODEL277 series are serial-to-fiber modems that convert RS-232/485/422 serial port signal to optical signal. This series include 3 types of optional products and support 1 RS-232, RS-485/422 or 3IN1 serial port to 1 fiber port. It adopts wall mounting or DIN-Rail mounting to meet the requirements of different application scenes.

This series adopt advanced communication coding and clock recovery technology to avoid data transmission error. And it adopts unique "Zero time delay and automatic forwarding" technology to enhance the anti-interference capability of interface and achieve real zero time delay. It can conduct automatic detection of baud rate, even the baud rate of the device serial signal changes; the converter can still achieve RS-232 or RS-485/422 to optical port conversion. MODEL277 series can be widely used in various industrial control, process control, traffic control, intelligent community and other scenes, especially suitable for bank, power industry, departments and systems with special requirements for electromagnetic interference.

Specifications
Fiber Port Number of interfaces: 1
Interface form: optional SC/ST/FC port
Transmission distance:
Multimode: 2km
Single mode: 20/40/60/80/100/120Km
Transmission wavelength:
Multimode: 1310nm
Single mode: 1310nm or 1550nm
Serial Port Standards: EIA RS-232C, RS-485, RS-422
Number of interfaces: Support 1 RS-232, RS-485/422 or 3IN1 serial port
RS-232 signals: OUT, IN, GND
RS-485 signals: D+, D-, GND
RS-422 signals: T+, T-, GND, R+, R-
Baud rate: 300bps-115200bps
MODEL277 interface form: RS-232/485/422 serial port, adopts 8-pin 5.08mm pitch terminal blocks
MODEL277A interface form: RS-232 serial port, DB9 female
MODEL277B interface form: RS-485/422 serial port, adopts 5-pin 5.08mm pitch terminal blocks
Direction control: RS-485 direction adopts ADDC (Automatic Data Direction Control) technology
Load capacity: RS-485/422 end supports 32 points polling environment (customizable 128 points)
Transmission distance: RS-232, 15m; RS-485/422, 1200m
RS-485 pull high/low resistor: 4.7kΩ
LED Indicator Power supply indicator, fiber port data receiving and alarm indicator, fiber port data sending indicator
Power Requirement MODEL277
Input power supply: 12~48VDC
Connection mode: 2-pin 5.08mm pitch terminal blocks
MODEL277A, MODEL277B three optional power supply solutions
External power supply: 5VDC, adopts DC round head for connection, MODEL277B supports 2.0A overcurrent protection
Built-in power supply: -48VDC, adopts 3-pin 5.08mm pitch terminal blocks;
220VAC, adopts 3-hole AC socket with switch
Environmental Limit MODEL277:
Operating temperature: -40~75℃
Storage temperature: -40~75℃
Relative humidity: 5%~95% (no condensation)
MODEL277A, MODEL277B:
Operating temperature: -10~60℃
Storage temperature: -40~85℃
Relative humidity: 5%~95% (no condensation)
Physical Characteristic Housing: IP30 protection grade, metal shell
Installation: wall mounting or DIN-Rail mounting (DIN-Rail accessories should be purchased separately)
MODEL277 dimension (W×H×D): 100mm×69mm×22mm
MODEL277A, MODEL277B dimension (W×H×D):
External power supply: 94mm×70.6mm×26mm
Built-in power supply: 173.2mm×115mm×30mm
Certification CE, FCC, RoHS
Warranty 3 years
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