Ring Network Type 2-Port Serial to Fiber Converter (RS-232/422/485 All Available)

This device provides 2 ports RS232/422/485 transmission over fiber optic. Each serial port supports all three interfaces: RS232, RS422, and RS485. It supports multiple fiber optic network topologies, including point-to-point communication, linear networks, star networks, and redundant ring networks with self-healing protection. It can also create more complex network topologies based on these basic structures.

● The device provides 1-2 serial ports, with each port simultaneously offering RS232/422/485 interfaces (interface type can be set via DIP switches) for easy on-site service activation.

● It can automatically detect and control RS-485 data flow without handshake signals to control data direction. Additionally, it can automatically detect the baud rate of the serial port signal.

● It has two fiber optic lines, and in the event of a line failure, it can automatically switch between them to ensure uninterrupted communication.

● The optical interfaces support three fiber optic transmission modes: multi-mode dual fiber, single-mode dual fiber, and single-mode single fiber. Optional SC/ST/FC/LC interfaces are available.

● It supports multiple fiber optic network structures, including point-to-point, star, linear, and redundant ring networks. These structures can be combined to create more complex network topologies.

● The serial channels can transmit asynchronous serial data with adaptive baud rates ranging from 300 to 115200bps.

● The serial port interfaces provide lightning protection according to the IEC61000-4-5 standard (10/700μS): 6KV for differential mode with an impedance of 40Ω, and 6KV for common mode with an impedance of 40Ω.

● The device supports a wide range of AC/DC input, it features internal isolation and redundant dual power inputs. It supports overload protection and reverse connection protection for the power supply.

● It complies with industrial-grade electromagnetic compatibility requirements.

● The device offers strong lightning protection, capable of withstanding lightning strikes, high voltage induction, surges, and other disturbances.

● With an IP40-rated enclosure, the device can withstand harsh environmental conditions.

● It can be mounted on a DIN rail or a wall.

● Operating temperature from -40°C to +85°C.

● It has passed the 100% burn-in testing.

● 5-year warranty.

● Fiber

Optical port: 2

Optical Fiber: Single/Dual fiber

Fiber interface: FC/SC/ST/LC(SFP)

Wavelength: 850nm/1310nm multi-mode; 1310nm/1550nm single-mode

Transmission distance without relay: 20~120Km

Typical transmit power:

    Single mode 1310/1550nm: ≥-9dBm

    Multimode 850nm: -18dBm

    Multimode 1310nm: -25dBm

Receiving sensitivity range: -28dBm~- 40dBm

● Serial Port

standard

    EIA/TIA-232 RS-232 (ITU-T V.28)

    EIA/TIA-422 RS-422 (ITU-T V.11)

    EIA/TIA-485 RS-485 (ISO/IEC8284)

   Serial interface:

    RS-422: TxD+ TxD- RxD+ RxD-

    RS-485 4 wires: TxD+ TxD- RxD+ RxD-

    RS-485 2 wires: A (for TX+) B (for TX-) Ground

    RS-232: RXD TXD Signal Ground

● Electrical and Mechanical Characteristics

Redundant dual power input: 

DC9-48V power consumption <5W

Overload protection: support

Reverse connection protection: support

Redundancy protection: Support

Access terminal: 4-core 5.08mm pitch plug-in terminal

Shell: IP40 protection grade, aluminum alloy material

Installation method: rail installation, wall-mounted installation

Weight: 0.75kg/set

Dimensions: 110mm (length) x 86mm (width) x 40.0mm (height)

● Environmental Index

Working temperature: -40℃—+85℃

Storage temperature: -40℃—+85℃

Working humidity: 0%—95% (non-condensing)

MTBF: >100,000 hours

1. Point to Point

2. linear networks

3. star networks

4. redundant ring networks