XM4203.21-21-31-63-301-NN-NNNN-MLCBNNNNN by Bosch Rexroth Indramat

The XM4203.21-21-31-63-301-NN-NNNN-MLCBNNNNN is an embedded control unit produced by Bosch Rexroth Indramat within the XM21 IndraControl Systems series. Designed as a compact PLC and motion controller, it links field I/O, drive-based automation, and plant-level networks inside an industrial cabinet. By combining real-time communication interfaces with an Intel architecture processor, the device coordinates sequential logic, axis interpolation, and diagnostic tasks required for factory automation lines, packaging machines, or material-handling cells. This arrangement allows one controller to manage both machine logic and motion-related functions from the same platform.

Processing is handled by a dual-core CPU, and the controller uses 2 cores on an Intel Core i3 2.30 GHz processor to run IEC 61131-3 runtimes and user programs at the same time. System memory includes 2 GB of DDR3 RAM for active tasks and 4 GB of flash for application files, so working data and stored project content remain separated. Network integration relies on a copper port with 1 Gbit/s Ethernet throughput for communication with HMI stations or higher-level systems. Electrical power is supplied at 24 V DC, which matches common control cabinet power distribution and supports stable operation with standard industrial supplies.

The enclosure is suited for shallow cabinets, with a depth of 74.1 mm, a width of 200 mm, and a height of 126.3 mm. At a mass of 1.35 kg, the unit is light enough for DIN rail mounting, and the IP20 housing is appropriate for ventilated control panels that stay free of conductive dust. Three extension slots accept communication or I/O modules, allowing the base controller to be adapted for different machine layouts. Two integrated Sercos III channels support synchronized drive communication, while the USB host and USB device connections handle local data transfer and setup tasks.