XM4203.21-21-31-63-301-NN-NNNN-MTXPNNNNN

The XM4203.21-21-31-63-301-NN-NNNN-MTXPNNNNN is an embedded controller from Bosch Rexroth Indramat in the XM21 IndraControl Systems series. The unit acts as a central processing node for PLC-based machine automation, coordinating distributed I/O and motion modules through its onboard fieldbus and Ethernet interfaces. By integrating computation, communication, and compact mounting dimensions, it streamlines cabinet layouts for medium-sized machinery.

Its processing core is a Intel Core i3 2.30 GHz CPU that is paired with 2 GB of DDR3 RAM, giving the controller enough overhead for deterministic IEC-61131 tasks and HMI services. The logic circuitry is powered from a single 24 V DC supply, and the device conforms to Protection Class III wiring rules, so only safety extra-low voltage sources are required. An ingress rating of IP20 makes the housing suitable for installation inside a panel. One Gigabit-compatible Ethernet port supports programming and plant networks, while individual USB host and USB device sockets simplify firmware loading and peripheral attachment. For modular expansion, the S20 backplane communicates with connected slices at 100 Mbit/s, allowing fast exchange of process data between the CPU and distributed I/O.

Physical layout favors shallow cabinets: the housing measures 200 mm wide, 126.3 mm high, and 74.1 mm deep, yet it weighs only 1.48 kg, so DIN-rail mounting imposes minimal load. Up to 63 S20 function modules can be stacked without extra power lines, keeping wiring short and shield continuity intact. Operation is specified for sites as high as 3000 m, enabling deployment in elevated facilities where reduced air density affects cooling. These mechanical and environmental limits complement the electrical characteristics described earlier by defining the controller’s allowable installation envelope.