B&R 0AC808.9 PLC Automation Module
The B&R 0AC808.9 is a high-performance automation module designed within the renowned B&R philosophy, focusing on pure industrial control. This module acts as a versatile interface between the central PLC and various field devices, combining robust mechanical construction with exceptional processing speed. It is specifically tailored for applications that demand deterministic response times and seamless integration into complex network architectures.
As part of the modular B&R X20 system, the 0AC808.9 benefits from a shared design platform that ensures compatibility across a wide range of CPUs and I/O cards. The module features high-density connections, enabling users to pack a significant amount of control logic into a relatively small panel footprint. Its design incorporates active damping and thermal management to ensure consistent performance in industrial settings.
Core Specifications
Module type: PLC interface / communication processor
System compatibility: B&R X20 and older B&R 2005/5000 series
Processor: 32-bit ARM architecture
Internal memory: 2 MB RAM / 8 MB FLASH
Fieldbus interface: CAN and Ethernet (Ethernet POWERLINK)
Digital I/O capacity: Supports up to 256 points via bus coupler
Analog I/O capacity: Up to 64 channels (via expansion)
Diagnostics: Integrated status LEDs and software error buffer
Power supply: 24 V DC (integrated reverse polarity protection)
Functional Highlights
Multi-Protocol Support: The module allows concurrent operation of PROFIBUS DP and CANopen protocols, bridging disparate device networks.
Automated Hardware Detection: When connected, the system automatically detects the 0AC808.9 and maps its I/O channels without requiring manual hardware configuration.
Time-Sensitive Networking (TSN) Ready: Built to support future TSN profiles, ensuring it remains relevant as networks evolve.
Secure Communication: Includes encryption mechanisms for data transfer to protect against unauthorized system access.
Application Scenarios
Printing and Converting: Register control and tension management using high-speed Ethernet POWERLINK.
Plastic Machinery: Managing temperature zones and core-puller positioning.
Intralogistics: Control of sorter systems and shuttle cars with dense sensor arrays.
Shipbuilding/Maritime: Monitoring tank levels and engine room alarms.
Integration and Software
Integration is handled through the Automation Studio environment, B&R's all-in-one engineering tool. This software provides complete access to the 0AC808.9's parameters, allowing engineers to set scan rates, filter times, and create virtual I/O for test purposes. The module supports "Hot Plug" functionality, permitting replacement or addition during operation with minimal system disruption.
Environmental and Quality Standards
The 0AC808.9 is rated for operation between -25°C and +60°C, with high shock and vibration resistance (5g, IEC 60068-2-6). It holds IEC 61131-2 compliance and is CE and UKCA certified.
Conclusion
The B&R 0AC808.9 automation module is a testament to B&R's commitment to open, flexible, and high-performance control. It provides system architects with a reliable building block that simplifies complex machine design while ensuring the speed and precision required for tomorrow's smart factories.




