{"product_id":"siemens-6fc5372-0aa00-0aa2-840d-sl-ncu-720-2-cnc-module","title":"Siemens 6FC5372-0AA00-0AA2 840D sl NCU 720.2 CNC Module","description":"\u003ch2\u003eSiemens 6FC5372-0AA00-0AA2 SINUMERIK 840D sl Numerical Control Unit\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSiemens 6FC5372-0AA00-0AA2\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e6FC5372-0AA00-0AA2\u003c\/strong\u003e Numerical Control Unit, operates as a dedicated hardware component for multi-axis motion control and PLC automation within SINUMERIK 840D sl platforms. Driven by an Intel Celeron M 1.2 GHz processor, the unit directly executes interpolation routines and coordinating control logic across internal system buses and fieldbus networks.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e6FC5372-0AA00-0AA2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSiemens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eGermany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e3.64 lbs (1.65 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard SINUMERIK 840D sl NCU frame dimensions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eBackplane bus power supply (24 VDC nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore Processor\u003c\/td\u003e\n\u003ctd\u003eIntel Celeron M \/ 1.2 GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNC Memory\u003c\/td\u003e\n\u003ctd\u003e3 MB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDRAM Memory\u003c\/td\u003e\n\u003ctd\u003e256 MB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNon-Volatile Memory\u003c\/td\u003e\n\u003ctd\u003e1 MB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntegrated PLC\u003c\/td\u003e\n\u003ctd\u003eS7-300 PLC 317-2 DP (512 KB Work Memory)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interfaces\u003c\/td\u003e\n\u003ctd\u003ePROFIBUS DP, Industrial Ethernet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eSiemens Fieldbus and Backplane Determinism\u003c\/h3\u003e\n\u003cp\u003eThe NCU 720.2 leverages deterministic Profinet and Industrial Ethernet communication channels alongside PROFIBUS DP protocols to link CNC drive axes with distributed I\/O nodes. High-speed backplane bus architectures handle data transfers between the central CNC engine and the onboard S7-300 PLC core without processing delay. Systems engineers must confirm strict firmware flash compatibility between the system memory card and active controller partitions before executing system boots to avoid bus cycle timeouts.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Is live hot-swapping supported for the 6FC5372-0AA00-0AA2 module during subrack operation?\u003c\/p\u003e\n\u003cp\u003eA: No, engineers must disconnect all primary 24 VDC subrack power prior to extracting or inserting the module. Disengaging the unit while powered risks damaging edge connector contacts and corrupting parameters in the 1 MB non-volatile memory partition.\u003c\/p\u003e\n\u003cp\u003eQ: How does the NCU preserve machine positions and program data during an unexpected power interruption?\u003c\/p\u003e\n\u003cp\u003eA: The module relies on its integrated 1 MB non-volatile memory and system battery backup circuit to retain offset values, flag states, and system parameters across complete power loss events.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003ePosition the module in its dedicated subrack slot within the main cabinet enclosure, tightening all mechanical grounding screws to ensure a solid, low-impedance frame ground. Maintain a minimum vertical clearance gap of 100 mm above and below the assembly to support unhindered heat dissipation through natural convection.\u003c\/p\u003e\n\u003cp\u003eUtilize double-shielded twisted-pair cabling for all PROFIBUS DP lines, securing the cable shields directly to earth ground with grounding clamps immediately at the enclosure entry point. Maintain a minimum physical distance of 200 mm between communication buses and high-power AC motor lines to prevent electromagnetic noise coupling.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":43926070132835,"sku":"6FC5372-0AA00-0AA2","price":400.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/237_e124e41b-d9fb-4402-ad29-99860c51439f.jpg?v=1767061191","url":"https:\/\/www.autocontrolglobal.com\/products\/siemens-6fc5372-0aa00-0aa2-840d-sl-ncu-720-2-cnc-module","provider":"AutoControl Global","version":"1.0","type":"link"}