{"product_id":"siemens-6fc5356-0bb15-0ab0-sinumerik-840d-de-control-unit","title":"Siemens 6FC5356-0BB15-0AB0 Sinumerik 840D De Control Unit","description":"\u003cdiv\u003e\u003cp\u003eSiemens 6FC5356-0BB15-0AB0 is the NCU 561.5B CNC hardware module that serves as the central control unit for SINUMERIK 840D\/DE systems, handling the machine's coordinated motion commands and PLC logic within a single, compact CNC architecture. Built around a 900 MHz processor, the module provides the CPU backbone for precise interpolation, feed and speed control, and I\/O processing across the SINUMERIK 840D\/DE software stack. The unit ships with 128 MB of memory (without system software), including roughly 3 MB of NC memory and 128 KB of PLC memory, and it is prepared for PROFIBUS DP communication to connect with servo drives, I\/O modules, and other field devices used in CNC plants for deterministic real-time control. Commonly sold as a replacement part for SINUMERIK 840D\/DE hardware, this exact 6FC5356-0BB15-0AB0 variant is used in refurbishment and service projects to restore CNC function within SINUMERIK 840D\/DE ecosystems, and is typically stocked by service providers and machine-tool OEMs for fast field replacement.\u003c\/p\u003e\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"New","offer_id":46268602155242,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-018.png?v=1788727429","url":"https:\/\/gtghardware.com\/products\/siemens-6fc5356-0bb15-0ab0-sinumerik-840d-de-control-unit","provider":"GTG Hardware","version":"1.0","type":"link"}