Industrial Serial to Fibre Optic Converter

  • Data rates up to 115.2 kbps
  • 10 – 48 VDC input power range
  • Wide operating temperature
  • 2,000V, 3-way optical isolation
  • Modbus ASCII/RTU compatible
  • EMI / RFI protection
  • UL Class 1/Division 2
  • TD, RD and Power LED’s


Model FOSTCDRI is Advantech B B SmartWorx’ premium industrial serial to multi-mode fibre optic converter. Its rugged design is UL approved and certified for Class 1/Division 2 industrial environments. It extends data communications up to 4km (2.5 miles) . It provides three-way optical isolation on the input, output and power lines. In addition to direct point-to-point connectivity, it is capable of operating in a multi-drop mode. This allows one serial device to communicate with up to 31 other devices around a fibre ring. Since it supports mixed standards, you can replace other converters and isolators and add the EMI / RFI protection inherent to fibre optic communications. In RS-232 mode, the converter supports Transmit and Receive data. Handshaking signals are not passed through. An Automatic Send Data Control circuit controls the RS-422/485 driver chip, eliminating the requirement for external software. Easy to install and configure, it has a 12-position DIP switch on the bottom to configure RS-422/485 parameters. Serial data and power cables connect to removable terminal blocks. ST connectors are used for the fibre.