June 02, 2026

3IF772.9 Network and Fieldbus Module – Detailed Product Description

The 3IF772.9 is a high-performance aPCI-based network and fieldbus communication module manufactured by B&R (Bernecker + Rainer), engineered exclusively for the B&R System 2005 automation platform. It functions as a dual-channel CAN bus fieldbus module, providing two independent CAN 2.0A/B interfaces combined with a configurable RS232 port. Designed for real-time, reliable communication in distributed industrial systems, it connects System 2005 controllers to CAN-compatible field devices such as sensors, actuators, drives, and remote I/O stations. With full electrical isolation, on-board data buffering, and rugged industrial construction, the module ensures stable operation in harsh environments and seamless integration into CAN-based fieldbus networks.

Description

3IF772.9 Network and Fieldbus Module – Detailed Product Description

1. Product Overview

2. Core Specifications

2.1 Communication Interfaces

Fieldbus Protocols: CAN 2.0A/B (CAN bus, ISO 11898 compliant); supports CANopen, DeviceNet, and raw CAN communication.
CAN Channels: 2 fully independent, electrically isolated CAN interfaces (IF2, IF3).
CAN Transmission Rate: Up to 500 kbit/s per channel; standard baud rates supported: 10 kbit/s to 500 kbit/s.
RS232 Interface (IF1): 9-pin D-Sub male connector, configurable as online diagnostic or configuration port; max. 115.2 kbit/s, max. distance 900 m.
Isolation: Complete electrical isolation between CAN channels, RS232, and System 2005 backplane; protects against voltage spikes, ground loops, and EMI/RFI noise.
Termination: Software-selectable 120 Ω termination resistors for each CAN channel, eliminating external terminators.
Data Buffering: Dedicated transmit/receive object buffers reduce CPU load and ensure smooth real-time data exchange.
Node Capacity: Up to 110 nodes per CAN segment; supports linear, star, and tree topologies.

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; indoor industrial use).
Operating Temperature: 0°C to +55°C (standard); extended range -25°C to +60°C available.
Storage Temperature: -40°C to +85°C.
Power Supply: 5 VDC from System 2005 backplane; power consumption approx. 2.0 W (no external power required).
Weight: Approximately 0.15 kg.
Dimensions: Standard System 2005 module size (W 30 mm × H 90 mm × D 84 mm), compatible with 19-inch rack-mount or standalone controllers.

2.3 Compliance & Certification

Industrial Standards: CE, UL, CSA, RoHS compliant.
EMC Performance: Meets IEC 61000-6-2 (industrial immunity) and IEC 61000-6-4 (industrial emission) requirements.

3. Key Features

Dual CAN Fieldbus Channels: Two isolated CAN interfaces enable connection to two independent fieldbus networks or redundant topologies, enhancing system flexibility and reliability.
Configurable RS232 Port: Supports local diagnostics, module configuration, and firmware updates without disrupting CAN fieldbus communication.
Electrical Isolation: Isolation between channels and backplane prevents ground loops and protects against industrial noise, ensuring stable operation in harsh conditions.
Integrated Termination Resistors: Software-controlled 120 Ω termination per CAN channel simplifies wiring and reduces external components.
On-Board Data Buffers: Dedicated transmit/receive buffers minimize controller intervention, improving communication efficiency and reducing latency.
Robust Industrial Design: Conformal-coated PCB and rugged components resist dust, moisture, and vibration; supports 24/7 continuous operation.
Seamless System Integration: Plug-and-play installation with hot-swap capability; fully compatible with B&R Automation Studio for configuration, diagnostics, and programming.
Diagnostic LEDs: Status indicators for power, CAN communication, and fault conditions on each channel enable quick on-site troubleshooting.

4. Application Scenarios

Factory Automation: Assembly lines, packaging machinery, and material handling systems connecting PLCs, HMIs, and remote I/O via dual CAN fieldbus networks.
Motion Control: Robotics, CNC machines, and servo drive systems requiring real-time, redundant CAN fieldbus communication for precise coordination.
Process Control: Pharmaceutical, food & beverage, and chemical industries monitoring sensors, valves, and pumps across distributed CAN fieldbus segments.
Redundant Fieldbus Systems: Critical applications needing network redundancy (e.g., power plants, water treatment) to ensure uninterrupted fieldbus communication.
Automotive Manufacturing: Production lines and test systems connecting CAN-based ECUs, sensors, and actuators via fieldbus networks.

5. Compatibility & Ordering

Compatible Systems: B&R System 2005 controllers, backplanes, and I/O systems.
Part Number: 3IF772.9 (original B&R part; terminal blocks 0TB704.9 ordered separately).
Warranty: 12 months (original B&R warranty); extended warranty available upon request.

6. Conclusion

The 3IF772.9 is a robust, versatile network and fieldbus module optimized for B&R System 2005. With its two isolated high-speed CAN fieldbus channels, integrated termination, configurable RS232 port, and rugged design, it delivers reliable, flexible connectivity for demanding industrial applications. It is ideal for distributed control, motion systems, and redundant fieldbus architectures, ensuring seamless integration and stable performance in complex automation environments。

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