Siemens 6FC5357-0BB22-0AE0 Numerical Control Unit

Siemens 6FC5357-0BB22-0AE0 is the Numeric Control Unit (NCU) for SINUMERIK 840D/DE CNC systems, serving as the central CPU (NCU 572.3) that coordinates motion, PLC logic, and I/O across the control platform. It runs on an AMD K6-2 processor at 233 MHz and provides CNC user memory of 0.5 MB with 96 KB PLC memory, delivered without system software, and is designed for integration in SINUMERIK 840D/DE installations. The module offers PROFIBUS DP prepared connectivity to support fieldbus communication with compatible drives and I/O devices, and is identified by order number 6FC5357-0BB22-0AE0. This NCU 572.3 variant is used within SINUMERIK 840D/DE configurations to drive complex machine tool operations.