3IF779.9 Network and Fieldbus Module – Detailed Product Description
June 02, 2026

3IF779.9 Network and Fieldbus Module – Detailed Product Description

The 3IF779.9 is a high-performance aPCI-based network and fieldbus communication module developed by B&R (Bernecker + Rainer), designed exclusively for the B&R System 2005 automation platform. It integrates three key communication interfaces: one electrically isolated X2X Link master interface, one electrically isolated CAN bus interface, and one configurable RS485/RS422 interface. This multi-protocol design enables seamless connectivity to B&R X2X I/O systems, CAN-based field devices, and serial devices, making it a versatile solution for distributed industrial control, motion control, and complex networking applications. With full electrical isolation, robust data buffering, and rugged industrial construction, the module ensures stable, reliable operation in harsh factory environments.

Description

3IF779.9 Network and Fieldbus Module – Detailed Product Description

1. Product Overview

The 3IF779.9 is a high-performance aPCI-based network and fieldbus communication module developed by B&R (Bernecker + Rainer), designed exclusively for the B&R System 2005 automation platform. It integrates three key communication interfaces: one electrically isolated X2X Link master interface, one electrically isolated CAN bus interface, and one configurable RS485/RS422 interface. This multi-protocol design enables seamless connectivity to B&R X2X I/O systems, CAN-based field devices, and serial devices, making it a versatile solution for distributed industrial control, motion control, and complex networking applications. With full electrical isolation, robust data buffering, and rugged industrial construction, the module ensures stable, reliable operation in harsh factory environments.

2. Core Specifications

2.1 Communication Interfaces

  • X2X Link Interface: 1 electrically isolated master interface for connecting B&R X2X remote I/O systems; supports high-speed data exchange with distributed I/O modules, enabling efficient expansion of System 2005 controllers.

  • CAN Bus Interface: 1 electrically isolated CAN 2.0A/B interface (ISO 11898 compliant); supports CANopen, DeviceNet, and raw CAN protocols; maximum transmission rate of 500 kbit/s, with standard baud rates from 10 kbit/s to 500 kbit/s; features dedicated transmit and receive object buffers to reduce CPU load and enhance real-time performance.

  • RS485/RS422 Interface: 1 configurable serial interface supporting both RS485 (half-duplex) and RS422 (full-duplex) modes; enables connection to serial devices such as HMIs, sensors, and third-party controllers; supports standard serial protocols and data rates up to 115.2 kbit/s.

  • Electrical Isolation: Complete isolation between X2X Link, CAN, RS485/RS422 interfaces, and the System 2005 backplane; also isolates the X2X Link and CAN interfaces from each other, protecting against voltage spikes, ground loops, and EMI/RFI noise in industrial environments.

  • Termination: Software-selectable 120 Ω termination resistors for the CAN interface; X2X Link interface includes integrated termination for simplified wiring.

  • Node Capacity: CAN interface supports up to 110 nodes per segment; X2X Link interface connects up to 63 X2X I/O modules per network.

2.2 Mechanical & Environmental

  • Form Factor: aPCI plug-in module (single slot, compatible with System 2005 backplane).

  • Protection Class: IP20 (protected against solid objects >12 mm; designed for indoor industrial use).

  • Operating Temperature: 0°C to +55°C (standard); extended operating range of -25°C to +60°C available for harsh conditions.

  • Storage Temperature: -40°C to +85°C.

  • Power Supply: 5 VDC from the System 2005 backplane; power consumption approximately 2.5 W (no external power required).

  • Weight: Approximately 0.18 kg.

  • Dimensions: Standard System 2005 module size (W 30 mm × H 90 mm × D 84 mm), compatible with 19-inch rack-mount or standalone System 2005 controllers.

2.3 Compliance & Certification

  • Industrial Standards: CE, UL, CSA, and RoHS compliant.

  • EMC Performance: Meets IEC 61000-6-2 (industrial immunity) and IEC 61000-6-4 (industrial emission) requirements, ensuring reliable operation in electromagnetically challenging environments.

3. Key Features

  1. Multi-Interface Integration: Combines X2X Link master, CAN bus, and RS485/RS422 interfaces in a single module, reducing slot usage and simplifying system design.

  2. Electrical Isolation: Full isolation between all communication interfaces and the backplane, as well as between X2X Link and CAN, prevents ground loops and protects against industrial noise.

  3. High-Speed Communication: CAN interface supports up to 500 kbit/s; X2X Link enables fast, deterministic data exchange with remote I/O, ideal for real-time control applications.

  4. Dedicated Data Buffers: CAN interface features transmit/receive object buffers to minimize controller intervention, improving communication efficiency and reducing latency.

  5. Configurable Serial Interface: RS485/RS422 mode selection supports flexible connection to various serial devices, enhancing system compatibility.

  6. Rugged Industrial Design: Conformal-coated PCB and rugged components resist dust, moisture, and vibration, supporting 24/7 continuous operation in harsh industrial environments.

  7. Seamless System Integration: Plug-and-play installation with hot-swap capability; fully compatible with B&R Automation Studio for configuration, diagnostics, and programming.

  8. Diagnostic LEDs: Status indicators for power, X2X Link activity, CAN communication, and fault conditions enable quick on-site troubleshooting and maintenance.

4. Application Scenarios

  • Distributed Factory Automation: Connects System 2005 controllers to X2X remote I/O, CANopen drives, and serial HMIs in assembly lines, packaging machinery, and material handling systems.

  • Motion Control Systems: Integrates with servo drives and motion controllers via CANopen, while expanding I/O via X2X Link for robotics, CNC machines, and high-precision motion applications.

  • Process Control: Monitors and controls sensors, valves, and pumps in pharmaceutical, food & beverage, and chemical industries using a combination of X2X I/O, CAN field devices, and serial instruments.

  • Hybrid Network Architectures: Bridges B&R X2X I/O networks with CAN fieldbus and serial devices, enabling seamless data exchange between different network types in complex automation systems.

  • Retrofit & System Upgrades: Facilitates integration of legacy serial devices and modern CAN-based equipment into existing B&R System 2005 installations, reducing upgrade costs and downtime.

5. Compatibility & Ordering

  • Compatible Systems: B&R System 2005 controllers, backplanes, and I/O systems; B&R X2X series remote I/O modules.

  • Part Number: 3IF779.9 (original B&R part; terminal blocks 0TB704.9 ordered separately for field wiring).

  • Warranty: 12 months (original B&R warranty); extended warranty available upon request.

6. Conclusion

The 3IF779.9 is a robust, multi-functional network and fieldbus module optimized for B&R System 2005. By integrating X2X Link master, CAN bus, and RS485/RS422 interfaces with full electrical isolation, high-speed communication, and rugged design, it delivers reliable, flexible connectivity for demanding industrial applications. It is ideal for distributed control, motion systems, hybrid network architectures, and system retrofits, ensuring seamless integration and stable performance in complex automation environments.


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