B+B SmartWorx/Advantech
B+B SmartWorx/Advantech BB-FOSTCDRI-INV 232/422/485 TO FIBER DIN RAIL INVERTED FIBER TRIPLE ISOLATED RS
Mfg Part Number: BB-FOSTCDRI-INV , Item #: 4771843
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Price: $399.85
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Last Updated: Aug 28, 2026
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Model BB-FOSTCDRI is a premium industrial serial to multi-mode fiber optic converter. Its rugged design is UL Approved and certified for Class 1/Division 2 industrial environments. It extends data communications up to 4 km (2.5 mi). 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 fiber ring. Since it supports mixed standards, you can replace other converters and isolators and add the EMI / RFI protection inherent to fiber 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 fiber.
A 10-30 VDC external power source is required (power supply not included, sold separately).
Model BB-FOSTCDRI-INV features an "inverted fiber state" and is suitable for applications requiring the fiber optic transmit light to be Off in the idle state.
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 fiber ring. Since it supports mixed standards, you can replace other converters and isolators and add the EMI / RFI protection inherent to fiber 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 fiber.
A 10-30 VDC external power source is required (power supply not included, sold separately).
Model BB-FOSTCDRI-INV features an "inverted fiber state" and is suitable for applications requiring the fiber optic transmit light to be Off in the idle state.
Main Specification
| General Information | |
| Manufacturer | Advantech Co., Ltd |
| Manufacturer Part Number | BB-FOSTCDRI-INV |
| Manufacturer Website Address | http://www.advantech.com |
| Brand Name | B+B SmartWorx |
| Product Model | BB-FOSTCDRI-INV |
| Product Name | Industrial Serial to Fiber Optic Converters |
| Product Type | Transceiver/Media Converter |
| Interfaces/Ports | |
| Total Number of Ports | 2 |
| Network (RJ-45) | No |
| Number of ST Ports | 2 |
| Media & Performance | |
| Media Type Supported | Optical Fiber |
| Fiber Mode Supported | Multi-mode |
| Fiber Optic Cable Wavelength | 820 nm |
| Maximum Distance Supported | 4 km |
| Fiber Optic Cable Core/Cladding Specification | 62.5/125 µm |
| Power Description | |
| Power Source | Power Supply |
| Power Consumption | 1.30 W |
| Plug/Connector Type | Terminal Block |
| Physical Characteristics | |
| Form Factor | DIN Rail Mountable |
| Height | 4.8" |
| Width | 4.4" |
| Depth | 1.3" |
| Weight (Approximate) | 7.04 oz |
| Miscellaneous | |
| Environmentally Friendly | Yes |
| Environmental Compliance | Waste Electrical and Electronic Equipment Directive (WEEE) |
| Environmental Compliance | Restriction of Hazardous Substances (RoHS) |
WARNING:: The plastic used in cable products can expose you to lead and lead components,
chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information go to www.P65Warnings.ca.gov
