3IF771.9 B & R Automation
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The B & R Automation 3IF771.9 is part of the System 2005 Controllers series and features a single CAN bus interface with a 4-pin male multipoint connector. It operates with a maximum transfer rate of 500 kbit/s, supports a maximum bus distance of 1000 meters, and includes LED status indicators for diagnostics. This aPCI form factor module is rated at IP20 and consumes a total power of 1.3 watts.
Internal Product Review
The 3IF771.9 is a B & R Automation System 2005 controller CAN bus interface with a single interface and a 500 kbit/s max transfer rate. LED status indicators and TX/RX data feedback for IF1 support efficient diagnostics during commissioning and service. Network-capable operation and IP20 protection make the unit a strong choice for dependable cabinet-level integration.
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Product Description:
The 3IF771.9 communication card is produced by B&R Automation for integration within the System 2005 Controllers series. Serving as a dedicated CAN network interface, the module allows a controller in the series to exchange deterministic field data with decentralized actuators and sensors. By occupying a single aPCI slot inside the backplane, the card adds a galvanically isolated channel that helps maintain signal integrity when the PLC supervises motion, safety, or general I/O nodes on a distributed machine network.
This interface board provides a single interface that conforms to the CAN bus signaling standard. Physical connection to the network is made through a 4-pin male multipoint connector, which allows quick wiring of shielded twisted-pair lines. Because the module follows the aPCI form factor, it mates directly with the System 2005 processor rack without external cabling. Internal PLC-to-IF1 isolation helps reduce cross-coupling, and the enclosure meets an IP20 rating for contact protection. During operation, it draws 0.64 W from the 3.3 V backplane rail and an additional 0.66 W from the 5 V rail, which supports low-heat installation in densely populated cabinets.
Network performance includes a data rate of 500 kbit/s across cable segments that may extend up to 1000 m, provided proper termination and baud rate rules are observed. A built-in transmit and receive object buffer absorbs bursts to keep microcontroller overhead low, and the module supports event-driven messaging so the host CPU can remain deterministic. Operational feedback is delivered by LED status indicators that show TX/RX activity for IF1 as well as error states, which simplifies diagnostics during operation. When both voltage rails are energized, overall dissipation reaches 1.3 W, helping with airflow and power-supply planning in multi-module assemblies. Its network-capable design lets the System 2005 controller participate on larger cell-level buses without additional gateway hardware.
