RSMUX3-FO is a multiplexer of 2x RS232/422/485 streams into fiber. Multiplexer allows connection of RS232/422/485 serial interfaces over fiber links with the maximum distance of 100km and provides complete isolation between devices and resistance to disturbance occurring along transmission path.

Brief – catalog card


Basic information

  • Multiplexer of 2x RS232/422/485 interfaces with screw connection over fiber links,
  • The device has one or two optical interfaces,
  • Available configurations: POINT-POINT, RING, BUS or two independent converters in one housing,
  • The configuration of the device through DIP-switch,
  • Transmission speed up to 2Mbps for RS-485, to 230.4kbps for RS-232,
  • Support for the protocol IEC103 (FO) only for the ‘MM’,
  • Single alarm contact NC/NO,
  • Supply voltage range 110-260V DC or 100-240V AC,
  • Dimensions: 103x84x53 mm, weight: 0.5 kg


Optimized and automatic tracking mechanisms continuity and its restoration after removing the failure allows maintenance-free operation for the lifetime. RSMUX3-FO also performs the function of converting any signals involving the exchange. For example, RS-232 to RS-485 or RS-422, which is realized by means of two devices connected to each fiber. RSMUX3-FO provides fully transparent operation. Each serial interface is sampled with a frequency of 20Mhz, which allows on data throughput of the RS to 230.4 Kbps (RS-232) and 2Mbps (RS-485/RS-422) with +/-60ns pulse time distortion. RS485 ports can be set up for 2-wire or 4- wire. Depending on the version of the device, multiplexer can work in point to point, bus and ring topologies. Serial interfaces can be configured through DIP switches. In addition, each port has two independent LEDs activity data in the transmitter and receiver, which greatly simplifies the process of installation, commissioning and maintenance.

The protection of connection

The device is available in versions with one or two optical interfaces. In the case of devices with two optical ports can create connections with protection for the fiber optic link. However, when building a ring on the basis of one optical port (it cannot be a version of the WDM) we have no redundancy. Fiber ports can be implemented by the built-in optical interfaces (single or dual fiber) or by SFP. In the case of the creation of the ring it is possible to simultaneously connect up to 64 devices.

Additional information

Weight0.5 kg

Plik PDF - RSMUX3-FO_brief

Zaloguj się aby zobaczyć więcej