3IF797.9-1 aPCI Interface Module

The 3IF797.9-1 is a dedicated aPCI communication interface module developed by B&R Industrial Automation, belonging to the B&R 2005 series control system and Automation PC product line. Designed for industrial automation scenarios requiring multi-protocol communication integration, this module integrates three types of communication interfaces to realize data interconnection between controllers, distributed I/O, servo drives, sensors and serial devices. It features compact mechanical design, comprehensive electrical isolation and stable long-term operation, and can be seamlessly embedded into standard aPCI slots of B&R hosts to expand system communication capacity.

This product is a standard aPCI bus interface module with the model number 3IF797.9-1. It adopts a standard aPCI slot mounting structure and can be directly installed on the matching backplane or controller slot. The module has an IP20 protection rating, which is suitable for installation inside standard industrial control cabinets. It is a non-customized industrial standard component with a solid mechanical structure and good environmental adaptability. The module is powered by the aPCI bus, with a total power consumption of 1.96 W, including 0.68 W at 3.3 VDC and 1.28 W at 5 VDC, which meets the low-power operation requirements of industrial equipment. Manufactured in Austria, it complies with international industrial electrical safety standards and has passed CE, cULus and other mainstream international certifications.

As a multi-functional communication expansion unit in the automation control system, the 3IF797.9-1 serves as a communication gateway and data transfer node. It integrates X2X Link master interface, CAN bus interface and RS232 serial interface, supporting simultaneous operation of multiple communication protocols to meet diversified field communication demands. The X2X Link master interface is used for B&R internal high-speed real-time bus communication, connecting remote distributed I/O and on-site control units to build a high-efficiency real-time control network. The CAN bus interface is applied to field bus communication, supporting networked device connection and data interaction with servo drives and intelligent execution units. The RS232 serial interface is designed for point-to-point serial communication, which can be connected to human-machine interfaces, debugging tools, serial sensors and other devices for parameter configuration and data transmission. Each interface is equipped with independent electrical isolation, which effectively suppresses on-site electrical interference and improves the stability and safety of the whole communication network.

In terms of interface configuration, the module is equipped with 1 electrically isolated X2X Link master interface, 1 electrically isolated CAN bus interface and 1 RS232 serial interface. The RS232 interface adopts a 9-pin male DSUB connector, with a maximum transmission baud rate of 115.2 kbit/s and a maximum communication distance of 900 meters. The CAN bus interface uses a 4-pin male multi-point connector, supporting a maximum transmission rate of 500 kbit/s and a maximum station-to-station distance of 1000 meters. It is equipped with object buffers in both transmit and receive directions and supports network expansion functions. The X2X Link master interface also uses a 4-pin male multi-point connector, with a maximum distance of 100 meters between two adjacent stations on the bus, realizing high-speed real-time bus communication.

For the operating environment, the working temperature ranges from 0°C to 60°C, and the storage temperature ranges from -25°C to 70°C. The applicable relative humidity is 5% to 95% non-condensing, adapting to most indoor industrial working environments. The module is fitted with dedicated status indicator LEDs. The RS232 interface has two LEDs for data sending and receiving status display, while the CAN bus interface and X2X Link interface each have one independent LED to indicate communication status, facilitating on-site personnel to carry out real-time status monitoring, debugging and routine maintenance. In terms of electrical isolation performance, isolation is implemented between different interfaces; the CAN bus and X2X Link interfaces are electrically isolated from the PLC side, and the RS232 interface shares partial electrical characteristics with the PLC side, which balances communication performance and anti-interference capability.

When deploying the 3IF797.9-1 module, two 0TB704.9 terminal blocks need to be purchased separately for signal wiring and circuit access. It is compatible with standard aPCI slots of B&R 2005 series controllers and Automation PC series industrial computers, and can work with the supporting distributed I/O system. Corresponding X2X Link bus cables, CAN bus cables and RS232 serial cables are required to complete the connection between the module and field devices. The module supports unified configuration, programming and debugging via B&R Automation Studio software, which is the standard tool for the whole B&R automation system development and maintenance.

This interface module is fully compatible with B&R 2005 series control systems, Automation PC industrial computers, distributed I/O systems and supporting servo drives, frequency converters, intelligent sensors and human-machine interfaces. It is widely used in multiple industrial fields such as mechanical manufacturing, packaging machinery, textile equipment, food processing, electric power and general industrial workshop control. It is especially suitable for automation projects that require mixed communication of real-time bus, field bus and serial signals, including production line automatic control, multi-axis linkage equipment control, distributed workshop integrated control and intelligent equipment transformation scenarios.

The 3IF797.9-1 is an original genuine product of B&R, manufactured in strict accordance with B&R’s global industrial quality management system. It has obtained CE, cULus, GOST-R and other international safety and quality certifications, meeting unified international industrial standards. The module features strong electromagnetic compatibility, excellent anti-interference performance and long service life, and can operate continuously and stably for a long time in complex industrial environments. The complete quality assurance system and after-sales service system can fully satisfy the long-term continuous operation requirements of industrial sites.