3IF797.9-1 aPCI interface module (B&R)
 Product Introduction

3IF797.9-1 is a three-in-one aPCI communication module from B&R's 2005 system and Automation PC platform. It integrates 1 RS232 serial port, 1 CAN bus, and 1 X2X Link master station. It is specifically designed for the aPCI slot and can simultaneously connect serial port devices, CANopen network, and B&R servo drives/distributed I/O. It is suitable for complex automation systems that require multi-protocol integrated communication. It is the core module of the compact multi-interface expansion.

Basic Information

Product Model: 3IF797.9-1

Brand: B&R (Beckoer, Austria, now part of ABB Group)

Product Type: aPCI Multi-Protocol Communication Interface Module

B&R ID Code: 0x13E7

Installation Method: Controller / Industrial Computer-specific aPCI slot (such as CP360, APC910 series)

Matching Terminals: CAN and X2X Link share 2 0TB704.9 (screw type) or 0TB704.91 (push-pull type) 4-pin 2.5mm² terminals; RS232 is integrated with 9-pin DSUB male connector

Protection Grade: IP20 (EN 60529)

Certifications: CE, UKCA, cULus, EAC, KC

Weight: Approximately 0.14kg

Operating Temperature: 0～60°C

Storage Temperature: -25～70°C

Relative Humidity: 5%～95% (no condensation)

Interface and Bus Specifications

IF1 – RS232 Serial Port

Connector: 9-pin DSUB male connector

Maximum Transmission Distance: 900m

Transmission Rate: Up to 115.2kbit/s

Electrical Isolation: None (shared ground with PLC side)

Function: Connects printers, barcode scanners, third-party instruments, HMI, etc. as serial port devices, supports point-to-point asynchronous communication, and can be configured as an online debugging interface.

IF2 – CAN Bus (CANopen)

Bus Type: CAN 2.0A/B, supports CANopen protocol

Connector: 4-pin male multi-point connector

Maximum Transmission Rate: 500kbit/s

Maximum Stations: Theoretical 127 (depending on bus load)

Station Distance: Maximum 1000m (at 125kbit/s rate)

Terminal Resistor: External (needs on-site configuration)

Electrical Isolation: Completely isolated (PLC side and interface side)

Function: Connects CANopen slave devices (such as servo drives, I/O modules, sensors), supports periodic/non-periodic data transmission, and has built-in send/receive object buffer.

IF3 – X2X Link Master Station

Bus Type: X2X Link Master Station (Beckoer dedicated high-speed fieldbus)

Connector: 4-pin male multi-point connector

Maximum Stations: 253 (servo drives, X20/X67 I/O modules)

Network Topology: Linear

Station Distance: Maximum 100m

Terminal Resistor: Built-in

Bus Power Supply: None

Electrical Isolation: Completely isolated (PLC side and interface side, and isolated from IF2)

Function: Manages B&R servo drives, distributed I/O, transmits position/velocity commands, status feedback, and alarm information, meeting the real-time requirements of CNC and motion control.

Electrical Characteristics

Power Supply Method: Powered by aPCI bus 3.3VDC and 5VDC

Power Consumption: 3.3VDC: 0.68W; 5VDC: 1.28W; Total Power Consumption 1.96W Electrical Isolation: IF2 (CAN), IF3 (X2X Link) are isolated from the PLC side; IF2 and IF3 are mutually isolated; IF1 (RS232) is grounded together with the PLC.

Insulation Strength: Complies with industrial standards, suitable for strong electromagnetic interference environments.

Status and Diagnosis

LED Indicators: IF1 (RS232) has 2 lights (Tx/Rx); IF2 (CAN), IF3 (X2X Link) each has 1 light (Tx/Rx), displaying the real-time data transmission and reception status.

Diagnostic Function: Through LED and Automation Studio software, it can monitor the communication status of the three interfaces, link quality, site connection, and fault codes, supporting rapid location of communication interruptions, site offline, data verification errors, etc.

Core Function

Three-Protocol Integration: A single module integrates RS232, CANopen, and X2X Link, achieving seamless connection of multiple devices and networks, simplifying the system architecture.

Dual Bus Isolation: CAN and X2X Link are electrically isolated from each other, allowing independent networking to avoid bus interference and enhance system stability.

High-speed Real-time Communication: X2X Link has low latency and high synchronization accuracy, meeting multi-axis linkage, interpolation operations; CANopen supports high-speed data interaction, suitable for industrial IoT scenarios.

Third-party Device Compatibility: RS232 is compatible with traditional serial port devices, CANopen is compatible with mainstream third-party servo and I/O, enhancing system scalability.

Industrial Grade Reliability: Wide temperature operation, multi-channel electrical isolation, built-in terminal resistors, suitable for vibration, dust, and strong electromagnetic interference harsh environments in machine tools, workshops, etc.

Seamless Integration with Beckhoff System: Fully compatible with 2005 series CPUs, X20/X67 I/O, servo drives, Automation PCs, unified configuration and programming in Automation Studio.

Application Fields

CNC machining centers, multi-axis linkage CNC systems (X2X Link controls servo, CANopen connects third-party devices)

Distributed Automation Production Lines (CANopen networked I/O, RS232 connected to HMI / barcode devices)

Industrial Robots, Packaging Machinery, Textile Equipment (mixed control of multiple protocols)

Process Automation (water treatment, HVAC, small-scale chemical plants, connecting sensors and actuators)

Beckhoff 2005 System and Automation PC Platform Multi-Protocol Communication Extension Scenarios