X20CP1485 B & R Automation
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The B & R Automation X20CP1485 is part of the X20 Fieldbus Input Output Modules series and uses a Celeron 400 processor with 32 MB SDRAM. It measures 150 by 99 by 85 mm and features one compactflash slot and one modular interface slot. The module operates with a 24 VDC I/O output voltage, a maximum input current of 2.2 A, and has a nominal output power of 7 W.
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Product Description:
The X20CP1485 is a CPU module produced by B&R Automation for the X20 Fieldbus Input Output Modules series. Serving as the control core of an X20 rack, X20CP1485 executes IEC-61131 logic, manages deterministic task scheduling, and coordinates distributed I/O nodes across fieldbus networks in machinery and process equipment that require predictable response. A single CompactFlash slot accommodates firmware, boot files, and large trend archives, and it also provides removable local storage for controller data.
Its Celeron 400 processor is paired with 32 MB SDRAM that holds user programs, process data blocks, and communication buffers, while 2 × 16 kB of L1 cache and a 256 kB L2 cache reduce fetch latency for time-critical routines. A nonvolatile pool of 1 MB SRAM safeguards recipe values during power interruption and supports data retention between power cycles. The controller reaches a minimum task cycle of 400 µs, and average single-instruction execution is 0.0055 µs, enabling complex motion sequences to run without scan overrun. One modular interface slot accepts communication or specialty modules, and the backplane supplies 7 W of X2X power so expansion slices receive regulated energy across the rack. Continuous input demand does not exceed 2.2 A, and thermal dissipation is spread through a 150 × 99 × 85 mm aluminum enclosure that also screens electromagnetic interference.
The onboard digital supply provides 24 VDC, and each contact is rated at 10 A, so solenoid valves or pilot lamps can be driven directly from the CPU carrier. Internal consumption remains at 10.5 W, allowing the unit to operate in shallow control cabinets with only convective airflow. An RS232 service port transfers data at 115.2 kbit/s, which is adequate for diagnostics, controller downloads, and routine data exchange during service.
