7CP476 B & R Automation
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The B & R Automation 7CP476 is a controller from the System 2003 Controllers series with a 24 VDC input voltage and consumes 20 watts of power. It features a CAN port with 9-pin DSUB at 500 kBit/s and supports up to 16 logical slots and 4 analog slots. The controller has an IP20 protection rating and a fastest task cycle of 1 ms.
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Product Description:
The 7CP476 CPU module is produced by B&R Automation as part of the System 2003 Controllers series. It serves as the central controller in modular machine architectures, running application code, coordinating I/O updates, and managing fieldbus traffic for industrial equipment. Designed for embedded installation alongside expansion cards, the module provides deterministic operation and peer communication so that motion axes, safety interlocks, and process variables can be supervised within a single platform.
The module has an instruction cycle of 0.5 µs, allowing complex Boolean and arithmetic operations to finish in sub-microsecond time. Task scheduling can repeat every 1 ms, providing a predictable worst-case response for high-speed packaging or inspection lines. The controller draws its logic power from a single 24 VDC supply, and galvanic isolation on the CAN link supports connections to distributed nodes through a 9-pin D-Sub port operating at 500 kBit/s. A separate 9-pin RS232 interface supports 57.6 kBit/s service communication. Protection is rated at IP20, making the module appropriate for mounting inside a control cabinet. The housing occupies a double-width slot and secures to the carrier with four screw mounts.
I/O density and program storage are sized for mid-range machines. Up to 4 analog slots and 16 logical slots can be addressed through the internal backplane, while the front connector can source 12.5 W for sensor or actuator loads. Overall energy use is limited to 20.0 W, helping thermal management in sealed enclosures. Firmware resides in a System PROM of 512 KB, and application code is safeguarded in a User PROM of 1.5 MB that retains data without external power. Volatile variables are held in 750 KB of battery-backed SRAM, enabling rapid restart after brief outages.
