Fibre Optic Multiplexer for I/O Interfaces and RS232/485 Ports

BS-MX-110 is a fibre optic multiplexer designed for eight I/O interfaces and an RS-232/RS-485/422 interface. The device supports various connection topologies, including point-to-point, bus or ring.

  • Status transmissions from eight inputs
  • Parametrisation of input trigger between 12V and 250V
  • Inputs triggered by DC and AC
  • Four inputs with interference filtering
  • FAST and SECURE modes of input management
  • 8 analogue NO/NC outputs
  • Galvanic insulation on inputs and outputs
  • Emergency NO/NC contact
  • RS232/485/422 serial interface
  • Supports ring and bus topology,
  • Possibility of addressing the device's receiver and transmitter
  • Configuration by means of a DIP-SWITCH or console via RS232
  • Fibre optic interface: 1 or 2x SC/PC 1310, 1550nm, SM/MM, WDM,
  • Broad spectrum of supply voltages

BS-MX-110 is a fibre optic multiplexer designed for eight I/O interfaces and an RS-232/RS-485/422 interface.

The device supports various connection topologies, including point-to-point, bus or ring.

Transparent data stream transmission combining signals from I/O and RS232/422/485 ports provides a flexible spectrum of potential uses, with a particular focus on minimising device lag and transmission not interfering with data transfer structure.

The eight digital inputs of the device are divided into two groups with the one (4 inputs) set to a fixed trigger level and the other (another 4 inputs) with configurable trigger voltage levels.

Configuration of the four parametric inputs allows trigger level thresholds of 12V, 24V, 48V, 110V, 125V, 220V, and 250V.

The inputs provide the additional functionality of filtering interference, which is particularly important in power network management applications and insulation between inputs of over 50 MW/500V.

Analogue BS-MX-110 outputs are fitted with double contacts, NC on one side and NO on the other. Outputs are triggered by inputs of devices operating on the bus or ring with suitably configured addressing.

The device is additionally fitted with an RS232/422/485 serial interface to serve as a separate channel for data transfer and CLI console connection for configuration.

BM-MX-110, depending on the model, is powered by voltages in the range of 10V to 430V DC or 85V to 305V AC.

The "-3'P" marking applies only to devices fitted with a protective WDM interface.

Example markings:

BS-MX-110-WS-3-P-T-6 – fibre-optic multiplexer for I/O interfaces and RS232/485 ports, with a WDM 1310/1550nm optical interface + 1550/1310nm protection, and 20km range with SM light pipes. 10-36V DC powersupply.

BS-MX-110-M-T-B – fibre-optic multiplexer for I/O interfaces and RS232/485 ports with a 1310nm optical interface, and 50km range with SM light pipes. 30-113V AC/40-160V DC power supply.

Specification Designation
BS-MX-110 BS-MX-110

Typical applications of BS-MX-110 devices are presented in the figures below.


  • Screw point
  • Four comparator inputs with the trigger threshold of 154V DC.
  • Four parametric inputs: with trigger levels configurable from the console (12, 24, 48, 110, 125, 220, 250V),
  • Interference filtering on parametric inputs in accordance with ESI 48-4 EB2
  • Screw joint
  • 8 outputs with NO/NC contacts
  • Two operating modes - FAST (immediate response to signal change) - SECURE (response on confirmation)
  • Emergency NO/NC connection
Power supply
  • Range of power supply voltages (depending on the version): - 10-36 V DC - 85-305V AC / 120-430V DC - 30-113V AC / 40-160V DC
  • Power input up to 5W
  • Casing 166x285x50mm
  • Can be mounted on a DIN bus
  • Can be mounted on a wall
  • Weight 1 kg
Serial interfaces
  • 1xRJ45 connection
  • RS-232, bit rate up to 230kbps
  • RS-422/485, bit rate up to 2Mbps
  • Lag for RS-232 <400ns
  • Lag for RS-485 <400ns
  • DIP-SWITCH configuration
Optical port
  • SM, MM, WDM, 1310nm, 1550nm
  • Fibre type 9/125um, 50/125um, 62,5/125um
  • SC/PC connection
  • Range depending on the optical port type 15km, 50km, 120km (1550nm), 20km WDM, 40km WDM, 60km WDM
  • single and double optical port versions are available
  • ring and bus compatible
Environmental Parameters
  • Normal working temperatures: -35 to +80°C

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