X20CP0201 B & R Automation
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The X20CP0201 from B & R Automation is a controller module in the X20 Fieldbus Input Output Modules series. It features an embedded µP 16 processor, 1 MB FlashPROM, and 100 kB SRAM user RAM, with 2.75 kB FRAM memory. The module is battery-free, has an integrated I/O processor, and a cycle time of 0.8 microseconds.
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Product Description:
The X20CP0201 central processing unit belongs to the X20 Fieldbus Input Output Modules series from B & R Automation. Installed on an X20 backplane, it supervises distributed digital and analog channels and runs control algorithms that coordinate motion, sequencing, and safety interlocks throughout a machine. By combining a processor, memory, and peripheral interfaces in a 37.5 mm housing, the product eliminates the need for a standalone PLC and serves as the deterministic core of conveyor drives, pick-and-place axes, and closed-loop temperature loops. Its backplane-mounted design also keeps control tasks closely linked to the connected I/O slices, which supports compact cabinet layouts and orderly signal routing.
The controller processes instructions in 0.8 µs, allowing tight proportional and differential loops to settle within microseconds. For periodic tasks, its integrated I/O processor offloads protocol handling so the CPU can dedicate bandwidth to user code stored in 100 kB SRAM. That division of work helps preserve predictable response when multiple channels update at the same time. Power draw is limited to 2.2 W, reducing cabinet dissipation when the module is stacked beside other X20 slices that share a 24 V rail. The housing has a width of 37.5 mm, and the enclosure carries an IP20 rating for mounting inside a closed panel. The unit runs without a battery, maintains a real-time clock resolution of 1 s, provides no onboard Ethernet interface, and omits a temperature sensor.
Nonvolatile program data reside in 1 MB FlashPROM, while trend values and counters survive power cycles in 2.75 kB FRAM. The CPU can trigger cyclic tasks at intervals down to 4 ms, and the watchdog keeps interrupt timing predictable during normal operation. Application code runs on an Embedded µP 16 core that favors fixed-point arithmetic for fast integer operations. Although no temperature sensor is installed, SRAM-based diagnostics retain fault codes across restarts, which helps preserve useful status information after a shutdown or brief power loss. The absence of moving parts also avoids wear associated with fans or mechanical storage devices.
