{"product_id":"6fc5357-0ba11-1ae0","title":"Siemens SINUMERIK 840D NCU 571.2 6FC5357-0BA11-1AE0","description":"\u003cp\u003eThe \u003cstrong\u003eSiemens SINUMERIK 840D NCU 571.2 (6FC5357-0BA11-1AE0)\u003c\/strong\u003e is a numerical control unit for the SINUMERIK 840D \/ 840DE system: first-generation (1994–1998, pre-powerline) 840D NCU 571.2 — entry-level class unit with integrated SIMATIC PLC 314, for 840D \/ 840DE machines with up to 6 axes \/ 2 channels; order variant -0BA11-1AE0 (NCU 571.2 release). Supplied for repair-exchange of early 840D systems where the original NCU is no longer available from Siemens. It plugs into the NCU box alongside the SIMODRIVE 611D drive rack and runs the NC kernel, PLC program and axis interpolation. At \u003cstrong\u003eJJ Automation\u003c\/strong\u003e it is available \u003cstrong\u003enew\u003c\/strong\u003e and as \u003cstrong\u003etested used \/ refurbished\u003c\/strong\u003e — checked before dispatch and backed by warranty.\u003c\/p\u003e\u003ch3\u003eWhen to replace\u003c\/h3\u003e\u003cp\u003eControl not booting, watchdog or NCK system alarms, corrupted SRAM \/ CF card data, repeated battery-backup failures, or physical damage after a power event. \u003cstrong\u003eBefore swapping:\u003c\/strong\u003e back up your machine data, PLC program and drive parameters — a control unit without this machine's own data cannot run it. Our free guides: \u003ca href=\"\/blogs\/siemens\/how-to-back-up-siemens-sinumerik-808d-828d-data-complete-guide\"\u003eSINUMERIK backup guide\u003c\/a\u003e · \u003ca href=\"\/blogs\/siemens\/siemens-840d-alarm-list\"\u003e840D alarm list\u003c\/a\u003e · \u003ca href=\"\/blogs\/siemens\/how-to-reference-a-siemens-sinumerik-cnc-808d-828d-840d-reference-point-absolute-encoder-calibration\"\u003ereferencing after a control change\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eDetails\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e6FC5357-0BA11-1AE0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eNCU 571.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem\u003c\/td\u003e\n\u003ctd\u003eSINUMERIK 840D \/ 840DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eNumerical Control Unit (NCU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntegrated PLC\u003c\/td\u003e\n\u003ctd\u003eSIMATIC 314\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration\u003c\/td\u003e\n\u003ctd\u003emax. 6 axes, 2 channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGeneration\u003c\/td\u003e\n\u003ctd\u003eFirst-generation 840D (pre-powerline)\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\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eNew \u0026amp; Used \/ Refurbished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cdiv style=\"background:#16216b;color:#ffffff;padding:18px;border-radius:8px;margin-top:16px;\"\u003e\n\u003cp style=\"margin:0 0 8px 0;\"\u003e\u003cstrong\u003eNeed this part? Get a quote today.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eCall or WhatsApp \u003ca href=\"https:\/\/wa.me\/918826207004\" style=\"color:#ffd54f;\"\u003e+91 88022 12394\u003c\/a\u003e — we ship across India and worldwide. Repair and exchange options are also available for Siemens SINUMERIK systems.\u003c\/p\u003e\n\u003c\/div\u003e\u003cp\u003eRelated: \u003ca href=\"\/pages\/siemens-controllers-panels\"\u003eSINUMERIK controllers \u0026amp; panels\u003c\/a\u003e · \u003ca href=\"\/pages\/siemens-pcb-boards\"\u003eSiemens PCB boards\u003c\/a\u003e · \u003ca href=\"\/pages\/siemens-drives-power\"\u003eSINAMICS \/ SIMODRIVE drives\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e✓ 100% tested ✓ Warranty ✓ Pan-India shipping\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePrice on request\u003c\/strong\u003e — 📞 +91 8826207004 ✉ sales@jjautomation.in\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"New","offer_id":67605521072264,"sku":"6FC5357-0BA11-1AE0","price":0.0,"currency_code":"INR","in_stock":true},{"title":"Used \/ Refurbished","offer_id":67605521105032,"sku":"6FC5357-0BA11-1AE0","price":0.0,"currency_code":"INR","in_stock":true}],"url":"https:\/\/jjautomation.in\/products\/6fc5357-0ba11-1ae0","provider":"JJAutomation","version":"1.0","type":"link"}