B&R X20IF1072 CAN Bus Communication Interface Module

The B&R X20IF1072 is a high-performance communication interface module from the X20 System, providing a single CAN bus connection for industrial automation networks. It is used to extend X20 controllers with CAN-based fieldbus communication, enabling connection to CANopen devices and other CAN-compatible equipment. This module serves as a gateway between X20 systems and devices communicating over the CAN bus network, supporting applications requiring real-time data exchange with drives, I/O devices, and sensors. The X20IF1072 is hot-pluggable, allowing installation or replacement without powering down the entire system, minimizing downtime for maintenance and upgrades.

CAN Bus Interface Specifications

The X20IF1072 features a single CAN bus interface with a 5-pin multipoint male connector. Interface type is CAN, supporting CANopen and other CAN-based communication protocols. Transmission rate is up to 1 Mbit/s, ensuring fast data exchange for real-time applications. An integrated terminating resistor is included to simplify network termination and improve signal integrity on the CAN bus. The module includes a set of diagnostic LED indicators that report module status, data transfer, and terminating resistor status, providing clear visual feedback for troubleshooting and commissioning. The interface supports standard CANopen device profiles for easy integration into existing CAN networks.

Power Consumption and Electrical Isolation

The X20IF1072 has a low power consumption of 0.79 W, minimizing heat generation and reducing the load on the system power supply. Electrical isolation is provided between the PLC and the CAN interface (IF1), preventing ground loops and protecting the controller from field-side electrical disturbances. This isolation enhances system reliability in installations where long cable runs or different ground potentials are present. The isolated CAN interface also improves noise immunity, ensuring accurate communication in electrically noisy industrial environments.

Physical and Environmental Ratings

Enclosure protection rating is IP20, indicating the module is suitable for installation within a control cabinet where it is protected from direct contact and environmental contaminants. The module operates across an extended temperature range of -25°C to 60°C for horizontal mounting orientation, and -25°C to 50°C for vertical orientation, supporting deployment in unheated industrial buildings. Storage and transport temperature range is -40°C to 85°C. Relative humidity operation can reach up to 100%, condensing, making the module suitable for high-moisture environments with appropriate installation precautions. The compact DIN rail-mount design conserves panel space in control cabinets.

Certifications and Hazardous Location Approvals

The X20IF1072 holds multiple certifications for global industrial use, including ATEX certification for Zone 2 hazardous locations (II 3G Ex nA nC IIA T5 Gc), allowing installation in environments where explosive gas atmospheres may occasionally be present. UL and cULus (E115267) certifications for industrial control equipment meet North American requirements. HazLoc cCSAus certification for Class I, Division 2 hazardous locations (Groups ABCD, T5) expands application to environments with flammable gases or vapors. Maritime approvals from DNV, LR, ABS, KR, and BV make the module suitable for shipboard and offshore installations where specific environmental and safety standards apply. The module is also CE and UKCA marked for European markets, with CRA (Cyber Resilience Act) compliance in preparation.

Integration with X20 Controllers

The X20IF1072 mounts directly into X20 PLC systems, connecting via the X20 backplane bus. Slot configuration within the X20 rack is flexible, allowing placement in any I/O slot as needed for system layout. A separate terminal block (0TB2105.9010 for screw clamp or 0TB2105.9110 for push-in) is required for field wiring connections, purchased separately from the module. The module's CAN interface provides a translator function between the X20 system and CAN bus devices, with all necessary protocol handling managed by the controller's software. Configuration is performed within the Automation Studio development environment, where users can set CANopen parameters, define PDO mapping, and configure network settings.

Application in Distributed Control Systems

The X20IF1072 is suitable for applications requiring CAN bus communication for distributed I/O, drive control, and sensor networking. Typical uses include connection to CANopen-based servo drives and inverters for coordinated motion control, integration of remote I/O stations using CAN-based fieldbus, data exchange with intelligent sensors and measurement devices, and communication with legacy CAN equipment in system retrofits.

Conclusion

The B&R X20IF1072 CAN bus communication interface module provides 1 Mbit/s CAN connectivity for X20 systems with integrated terminating resistor and electrical isolation. Its ATEX Zone 2 and maritime certifications, extended temperature range, and hot-pluggable design support distributed control applications in demanding industrial environments.