Siemens 6FX1111-0AP02 CPU Module

Siemens 6FX1111-0AP02 CPU Module is a SINUMERIK 3 GA4C/M,T slave CPU designed for Siemens SINUMERIK System 3 CNC controls. The 0AP02 designation identifies this unit as the RAM-free (Senza RAM / ohne RAM) variant of the slave CPU, meaning RAM is not included with the module and must be provided separately if your system requires it. This CPU module is intended for basic 4C configurations and acts as a secondary processing unit within the SINUMERIK 3 architecture, typically paired with a RAM-equipped main CPU or RAM expansion as specified by the controller configuration. It is described in Siemens documentation and by third‑party suppliers as the 6FX1111-0AP02 slave CPU without RAM for GA4C/M,T systems, and is used in legacy SINUMERIK System 3 installations where a spare or replacement slave processor is needed. When integrating this module, ensure compatibility with the rest of the SINUMERIK 3 hardware chain, including the corresponding RAM options and bus interfaces, to maintain correct control sequencing and I/O coordination within the CNC control loop.