B&R Industrial Automation X20BB27 Base For X20 Compact CPUs

X20BB27 is the base/backplane module for B&R's X20 Compact CPU family, serving as the bus backbone that connects a Compact CPU to its power-supply module and forms the foundation for the system's RS232 and CAN bus interfaces. It includes the X20 connection and is delivered with left and right end plates (X20AC0SL1/X20AC0SR1) to complete the backplane assembly. The base is compatible with all X20 Compact CPUs and the corresponding power supply module, making it the standard foundation for X20 CPU configurations in compact automation installations. The RS232 and CAN interfaces are integrated into the base, enabling serial communications and CAN networks directly from the CPU stack. In typical configurations, X20BB27 sits between the CPU card and the power module, providing the essential backplane structure that unifies control, communication, and power in one compact package.