May 27, 2026

B&R 3IF797.9-1 Interface Module

The 3IF797.9-1 is a multi-protocol aPCI communication interface module from B&R, designed for SYSTEM 2005 series controllers and Automation PC 910. It integrates three independent communication channels: one RS232, one electrically isolated CAN bus, and one X2X Link master interface. As a dedicated communication co-processor, it delivers high-reliability data exchange and protocol flexibility for distributed automation systems, ensuring stable operation in noise-intensive industrial environments.

Description

B&R 3IF797.9-1 Interface Module

Product Introduction

Basic Information

Model: 3IF797.9-1
Brand: B&R (Bernecker + Rainer, ABB Group)
Series: SYSTEM 2005
Product Type: aPCI Multi-Protocol Communication Interface Module
Interfaces: 1×RS232 (9-pin DSUB), 1×CAN (4-pin, isolated), 1×X2X Link Master (4-pin, isolated)
Power Supply: 3.3 VDC and 5 VDC from backplane
Power Consumption: 0.68 W @ 3.3 VDC, 1.28 W @ 5 VDC; Total 1.96 W
Protection Class: IP20
Operating Temperature: 0°C to +60°C
Storage Temperature: -25°C to +70°C
Relative Humidity: 5% to 95%, non-condensing
Certifications: CE, UL/cULus, EAC, TÜV
Mounting: aPCI slot in SYSTEM 2005 CPU/IF modules or Automation PC 910

Function and Positioning

The 3IF797.9-1 functions as a tri-channel communication hub for B&R SYSTEM 2005 and industrial PC systems, optimized for multi-network integration and real-time data processing. It offloads communication tasks from the main controller, independently managing RS232 serial links, CAN bus networking, and X2X Link high-speed internal communication. The isolated CAN and X2X ports enhance noise immunity, while the RS232 port enables connection to legacy serial devices. It acts as a bridge between the controller, distributed I/O, servo drives, and third-party equipment, supporting seamless integration in complex automation architectures.

Core Performance Parameters

Supported Protocols: CANopen, CAN 2.0A/B, Modbus RTU (RS232), X2X Link (B&R real-time bus)
Communication Speed: RS232 up to 115.2 kbit/s; CAN up to 500 kbit/s; X2X Link up to 10 Mbit/s
Isolation Voltage: 2,500 VAC (CAN and X2X channels to PLC)
Communication Distance: RS232 up to 900 m; CAN up to 1,000 m; X2X Link up to 100 m per station
Data Buffers: Object buffers for CAN transmit/receive; dedicated buffers for RS232/X2X
Status Indicators: LEDs for module status, Tx/Rx activity per channel, and error diagnosis
EMC Compliance: EN 61000-6-2, EN 61000-6-4
Configuration: Via B&R Automation Studio V4.x and above

General Compatible Accessories

B&R SYSTEM 2005 series backplanes and 6/9/12/15-slot racks
B&R SYSTEM 2005 series CPU modules (CP260) and interface modules (IF260/IF060)
Automation PC 910 series industrial PCs with aPCI slots
24 VDC industrial power supplies (0PS105.1, 0PS205.1)
Communication cables: RS232 (0G0001.00-090), CAN (0G1000.00-090), X2X Link (0G1002.00-090)
Terminal blocks (0TB704.9) for field wiring
B&R Automation Studio V4.x and above for programming and diagnosis
Application memory modules (2ME903.90-1) for program storage

Applicable Equipment Fields

Factory Automation: Automotive assembly lines, packaging machinery, material handling systems
Motion Control: CANopen servo drives, frequency converters, multi-axis synchronization
Process Control: Food and beverage, pharmaceutical, chemical, and water treatment plants
Industrial Networking: Distributed I/O systems, X2X Link real-time bus networks, SCADA integration
Legacy System Integration: Connection to RS232-based HMIs, scanners, and third-party controllers
Harsh Environments: Manufacturing workshops, high-vibration sites, and electrical noise-intensive areas
General Automation: Any SYSTEM 2005 or Automation PC 910 application requiring tri-channel multi-protocol communication expansion

Contact Info