Siemens 6FC5371-0AA30-0AA1 Numerical Control Unit

Siemens 6FC5371-0AA30-0AA1 is the SINUMERIK 840D SL NCU 710.3PN with PLC 317-3PN/DP, a compact numerical control unit that serves as the brain of SINUMERIK 840D SL CNC systems. This PN/DP variant combines CNC and PLC functionality in one enclosure, storing CNC programs and motion data in CNC memory of 3 MB and PLC logic in 512 KB of user memory, respectively. It is designed to handle the thermal demands of demanding CNC tasks with internal heat dissipation features built into the unit. The NCU 710.3 PN/DP supports PN/DP fieldbus communications through the integrated PLC 317-3PN/DP, and it is compatible with SINUMERIK 840D sl type 1B configurations, commonly deployed in CNC machine tools that require synchronized motion control and automation logic. This specific part number is used when a SINUMERIK 840D SL system requires an NCU with a built-in PLC and the PN/DP communication interface, delivering a streamlined, integrated control solution for precise, repeatable manufacturing operations.