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Beckhoff's CX1020-0000 and CX1900-0204 embedded controllers are part of its CX series, which combines PC technology and modular I/O levels to form a DIN rail unit that can be installed in control cabinets. CX1020 is a basic CPU module with high CPU performance, equipped with Intel Celeron M ULV processor (1 GHz clock frequency), and compact design that does not require the use of fans due to its low power consumption characteristics (TDP is only 7W).

The CX1020 supports direct connection between bus terminals and EtherCAT terminals, and can be used with all CX1500 series fieldbus modules as well as all CX1100 power modules in the CX series. It can also be optionally equipped with a version without L2 cache (such as CX1900-0320), but the specific configuration and features of CX1900-0204 are not detailed in the search results, only mentioning that it is a DDR2 RAM upgrade option for CX5020.

The CX1020 and CX1900-0204 are both part of Beckhoff's comprehensive system solutions for different performance levels in the automation field. These solutions are based on high-quality components and personalized chassis structure designs using open standards, and are suitable for various control requirements. The CX1020 can also be converted into powerful PLC and motion control systems using TwinCAT automation software, with or without visual operations.