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Serial to Fiber Optic Converters

INTRODUCTION (INDUSTRIAL RS232 RS485 RS422 TO FIBER OPTIC CONVERTER)

RS232 RS485 RS422 to Fiber Optic Converter

The FBR-Serial-2 (Rack/Wall-mount) is an industrial-grade (wide temperature range with surge & static protection) multi-function RS232 / RS485 / RS422 to fiber optic converter (fiber optic modem) that supports asynchronous serial communications (RS-232, RS-485, and RS-422) through fiber optic links. Besides the capability of long distance data transmission, fiber optic products are inherently resistant to EMI/RFI and transient surges; therefore, they are ideal for data communications near heavy electrical equipment and other electrical or radio interference.

Depending on the fiber cable and the type of converter used, a multi-mode fiber optic converter can extend the RS232 / RS485 / RS422 distance to up to 1.2 miles (2 km), while a single-mode fiber optic converter can extend the RS232 / RS485 / RS422 distance to up to 24.8 miles (40 km). Standards can be mixed and matched, so RS-232 devices can be connected to RS485 / RS422 devices, or RS485 (2-wire) devices can be connected to RS422 (4-wire) devices without using a converter and isolator.

Declaration of Conformity | data sheet | product selection guide

Unit Price for Multi-Mode/ST, SC, or FC Connectors: $154.95/each.

Unit Price for Single-Mode/ST, SC, or FC Connectors: $174.95/each.

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PRODUCT PHOTOS

RS232 RS485 RS422 to Fiber Optic Converter - ST Connector RS232 RS485 RS422 to Fiber Optic Converter - SC Connector RS232 RS485 RS422 to Fiber Optic Converter - FC Connector
ST Connector type SC Connector type FC Connector type

FEATURES (INDUSTRIAL RS232 RS485 RS422 TO FIBER OPTIC CONVERTER)

- Converts RS232 RS485 RS422 to Optical Fiber Signals and vice versa.
- Rack (DIN-Rail) or Wall / Panel mounting for easy installation.
- Industrial grade with wide temperature range (-40F to 185F / -40C to 85C), surge (600W) and static protection (15kV).
- Transmits serial data (RS232, RS485 or RS422) over long distances through fiber cables (Multi-mode: 1.2 miles or 2 km; Single-mode: 24.8 miles or 40 km).
- Supports serial data rates from 300 to 115,200bps.
- Standards can be mixed and matched (Same data type, RS232 to RS485 / RS422 or RS485 to RS422).
- Supports up to 128 nodes of RS485 / RS422 devices.
- Single or Multi-mode, with ST, SC or FC connectors.
- A wide range of fiber optic cables is supported.
- Plug and play (hot-pluggable; data format auto-sensing and self-adjusting).
- Data direction auto-turnaround, no flow control is required for RS-485 communications.
- Built-in surge protection, static protection and circuit protection.
- Surface Mount Technology manufactured to ISO-9001 standards.
- CE/FCC certified: strictly certified by world-class lab TUV.
- 5-year manufacturer's warranty.

SPECIFICATIONS (INDUSTRIAL RS232 RS485 RS422 TO FO CONVERTER)

Part Number: FBR-Serial-2 (DIN-Rail/Wall-Mounting)
Compatibility: EIA/TIA RS-232C, RS-485, and RS-422 standards
Power Source: 9 to 36VDC (External AC to DC power adapter included)
External AC/DC Power Adapter: 9VDC/500mA (Input: 100~240VAC 50/60Hz, US type A plug)
Current Consumption: Less than 100mA
Serial Data Rates: 300 to 115,200bps (auto-sensing and self-adjusting)
Wavelength: 1310nm
Usable Fiber Optic Cables: Multi-mode: 50/125, 62.5/125m
Single-mode: 8.3/125, 8.7/125, 9/125, 10/125m
Maximum Number of Nodes: RS485 / RS422: 128 nodes
Distance (Serial Port): RS232: 16ft (5m); RS485 / RS422: 4000ft (1.2km)
Distance (Fiber Lines): Multi-mode: 1.2 miles (2km);
Single-mode: 24.8 miles (40km)
Connectors (Serial Port/Power): Serial port/power: 10-way terminal block
Connectors (Fiber Links): 2x ST Connector; 2x SC Connector; or 2x FC Connector
Surge protection: 600W
Electro-Static Discharge (ESD): Up to 15kV
Dimensions (H x W x D): 5.0 x 3.6 x 0.9 in (127 x 73 x 33 mm)
Weight: 4.6 oz (130 g)
Operating Temperature: -40F to 185F (-40C to 85C)
Operating Humidity: Up to 90% RH (no condensation)

CONVERTER CONNECTOR / TERMINAL BLOCK PINOUTS

Fiber Link Side

Fiber Optic Connector types: ST, SC and FC

RS232/RS485/RS422 Side

Pin TX+/A+ TX-/B- RX+ RX- GND TX RX 9~30V GND
RS232 - - - - GND TX RX DC+ DC GND
RS485 485+ 485- - - GND - - DC+ DC GND
RS422 TX+ TX- RX+ RX- GND - - DC+ DC GND

10-Way Terminal Block

RS232 RS485 RS422 FO Converter Connectors

CONNECTIONS (INDUSTRIAL RS232 RS485 RS422 TO FIBER OPTIC CONVERTER)

RS232 RS485 RS422 FO converter connections
Figure 1: FBR-SERIAL-2 (DIN-Rail/Wall-Mount) Connection Diagram

INSTALLATIONS (INDUSTRIAL RS232 RS485 RS422 TO FIBER OPTIC CONVERTER)

RS232 RS485 RS422 Fiber Optic converter DIN rail mounting
Figure 2: DIN-RAIL (RACK) MOUNTING
RS232 RS485 RS422 to FO Converter - Wall Panel Mounting
Figure 3: WALL/PANEL MOUNTING

TROUBLESHOOTING (INDUSTRIAL RS232 RS485 RS422 TO FO CONVERTER)

1) Make sure the power is connected and turned on.
2) Check the connections according to the above "CONNECTIONS" diagrams.
3) Loopback Test

RS232 RS485 RS422 to Fiber Optic Converter - Loopback test
Figure 4: LOOPBACK TEST
  • Connect "Fiber TX" to "Fiber RX" by using a fiber optic patch cord cable and connect the PC's RS-232 (or RS-485/422) to FBR-Serial-2 according to the above "CONNECTIONS" diagram.
  • Run 232Analyzer FREE version software on your computer.
  • Select "ASCII" for both the Send and Receive data formats. Then send command and/or string such as "CommFront" from the 232Analyzer software. You should receive an echo of the command/string sent ("CommFront"). By performing a simple loopback test like this, you can test both the transmitter and receiver of the converter. This is very helpful when you are in doubt about the performance of your converter.
RS232 RS85 RS422 FO converter loopback test 2
Screenshot: Send/receive commands from 232Analyzer software.
232Analyzer is an advanced RS232 Serial Protocol Analyzer software that allows you to control, monitor and analyze serial port (RS232 / RS485 / RS422 / TTL, etc.) activities. Not just the data, it also allows you to monitor or change RS-232's line states: RTS, CTS, DTR, DSR, DCD, and RI.

The FREE version (no time limitation) can be downloaded from here.


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