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

The XM4203.21-21-31-63-301-NN-NNNN-MTXPNNNNN is an automation controller in the XM21 IndraControl Systems series manufactured by Bosch Rexroth Indramat. As a DIN-rail unit, it serves as a compact central processor for machine logic in industrial automation cells. It also coordinates fieldbus modules and links higher-level networks so connected equipment can exchange data with the control platform. This arrangement allows local processing and network communication to be handled from a single housing on the rail.

Control performance is handled by an Intel Core i3 2.30 GHz processor, while integrated 2 GB of RAM stores user programs and real-time data buffers. The electronics operate from a single 24 V DC supply, and the enclosure carries an IP20 rating for installation in protected cabinets. The unit uses Protection Class III circuitry, and communication with S20 I/O slices takes place over an internal bus running at 100 Mbit/s. One Ethernet port supports external TCP/IP links for HMI or supervisory systems, while separate USB device and USB host connectors support file transfer, removable media, and peripheral access. The housing measures 126.3 mm high, 200 mm wide, and 74.1 mm deep, which allows dense placement on a rail beside other control components.

Up to 63 S20 expansion modules can be attached without additional repeaters, allowing the controller to support sizable decentralized I/O stations from one base unit. Installation is permitted at elevations up to 3000 m above sea level, which supports use in high-altitude facilities. The controller has a mass of 1.48 kg, so it remains manageable for cabinet mounting and adds limited load to the rail. The available expansion capacity also allows one controller to manage a broad mix of digital and analog modules within the same station.