{"product_id":"fanuc-option-pcb-for-16i-18i-21i-a20b-8100-0336","title":"Fanuc Option PCB for 16i\/ 18i\/ 21i A20B-8100-0336","description":"\u003cp data-start=\"67\" data-end=\"377\"\u003eThe \u003cstrong data-start=\"71\" data-end=\"89\"\u003eA20B‑8100‑0336\u003c\/strong\u003e is a \u003cstrong data-start=\"95\" data-end=\"144\"\u003ecommunication interface printed circuit board\u003c\/strong\u003e used in industrial \u003cstrong data-start=\"164\" data-end=\"196\"\u003eFANUC CNC controller systems\u003c\/strong\u003e to provide \u003cstrong data-start=\"208\" data-end=\"257\"\u003eserial communications via the RS‑485 standard\u003c\/strong\u003e, often used for DNC (Direct Numerical Control) and other data transfer functions. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-start=\"379\" data-end=\"406\"\u003e🔌 What This Board Does\u003c\/h3\u003e\n\u003cul data-start=\"407\" data-end=\"1282\"\u003e\n\u003cli data-start=\"407\" data-end=\"744\"\u003e\n\u003cp data-start=\"409\" data-end=\"744\"\u003e\u003cstrong data-start=\"409\" data-end=\"455\"\u003eRS‑485 \/ DNC1 Serial Communication Module:\u003c\/strong\u003e This board adds a \u003cstrong data-start=\"474\" data-end=\"517\"\u003erobust RS‑485 serial communication port\u003c\/strong\u003e to a FANUC controller, allowing the CNC to communicate with external devices such as PCs, DNC hosts, PLCs, or other automation systems over a multi‑drop, industrial‑grade serial network. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"745\" data-end=\"1047\"\u003e\n\u003cp data-start=\"747\" data-end=\"1047\"\u003e\u003cstrong data-start=\"747\" data-end=\"780\"\u003ePart of the A20B‑8100 Family:\u003c\/strong\u003e FANUC’s A20B‑8100 series includes various \u003cstrong data-start=\"823\" data-end=\"853\"\u003eoption and interface cards\u003c\/strong\u003e for controller systems — such as serial communications, Profibus, DeviceNet, etc. This particular variant (0336) is designated for RS‑485\/DNC1 operation. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1048\" data-end=\"1282\"\u003e\n\u003cp data-start=\"1050\" data-end=\"1282\"\u003e\u003cstrong data-start=\"1050\" data-end=\"1066\"\u003eIntegration:\u003c\/strong\u003e Installed inside the CNC controller’s electronics cabinet in a dedicated communication slot or backplane connector, where it interfaces with the controller logic and other PCBs. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1284\" data-end=\"1302\"\u003e🛠 Typical Use\u003c\/h3\u003e\n\u003cp data-start=\"1303\" data-end=\"1464\"\u003eThis board is especially useful in setups where the CNC must exchange program data, status information, or custom messages with external systems — for example:\u003c\/p\u003e\n\u003cul data-start=\"1465\" data-end=\"1655\"\u003e\n\u003cli data-start=\"1465\" data-end=\"1508\"\u003e\n\u003cp data-start=\"1467\" data-end=\"1508\"\u003e\u003cstrong data-start=\"1467\" data-end=\"1485\"\u003eDNC networking\u003c\/strong\u003e with a host computer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1509\" data-end=\"1572\"\u003e\n\u003cp data-start=\"1511\" data-end=\"1572\"\u003e\u003cstrong data-start=\"1511\" data-end=\"1540\"\u003eProgram uploads\/downloads\u003c\/strong\u003e to and from a factory network\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1573\" data-end=\"1655\"\u003e\n\u003cp data-start=\"1575\" data-end=\"1655\"\u003e\u003cstrong data-start=\"1575\" data-end=\"1602\"\u003eCommunication with PLCs\u003c\/strong\u003e or other automation equipment using RS‑485 signaling\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1657\" data-end=\"1679\"\u003e⚙️ Practical Notes\u003c\/h3\u003e\n\u003cul data-start=\"1680\" data-end=\"2202\"\u003e\n\u003cli data-start=\"1680\" data-end=\"1831\"\u003e\n\u003cp data-start=\"1682\" data-end=\"1831\"\u003e🧰 \u003cstrong data-start=\"1685\" data-end=\"1703\"\u003eCore Exchange:\u003c\/strong\u003e Some suppliers require you to return your old core board when purchasing a replacement. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1832\" data-end=\"2020\"\u003e\n\u003cp data-start=\"1834\" data-end=\"2020\"\u003e🛠 \u003cstrong data-start=\"1837\" data-end=\"1861\"\u003eRepair Availability:\u003c\/strong\u003e Repair options may be limited or not offered by some vendors — often you’ll find refurbished or tested boards instead. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2021\" data-end=\"2202\"\u003e\n\u003cp data-start=\"2023\" data-end=\"2202\"\u003e📡 \u003cstrong data-start=\"2026\" data-end=\"2056\"\u003eNot a CPU or motion board:\u003c\/strong\u003e This part does \u003cstrong data-start=\"2072\" data-end=\"2125\"\u003enot perform motion control or CNC core processing\u003c\/strong\u003e, but strictly \u003cstrong data-start=\"2140\" data-end=\"2157\"\u003ecommunication\u003c\/strong\u003e tasks. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JJAutomation","offers":[{"title":"New","offer_id":44838913966216,"sku":"A20B-8100-0336","price":0.0,"currency_code":"INR","in_stock":true},{"title":"Used \/ Refurbished","offer_id":46109847650440,"sku":"A20B-8100-0336","price":0.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/1903\/3224\/files\/WhatsAppImage2025-10-18at1.47.49PM-2026-02-25T142251.915.jpg?v=1772009580","url":"https:\/\/jjautomation.in\/products\/fanuc-option-pcb-for-16i-18i-21i-a20b-8100-0336","provider":"JJAutomation","version":"1.0","type":"link"}