{"product_id":"fanuc-back-panel-for-16i-18i-21i-a20b-2003-0280","title":"Fanuc Back Panel for 16i\/ 18i\/ 21i A20B-2003-0280","description":"\u003ch3 data-start=\"223\" data-end=\"277\"\u003e📌 \u003cstrong data-start=\"230\" data-end=\"277\"\u003eFANUC A20B‑2003‑0280 — 3‑Slot Backplane PCB\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"278\" data-end=\"500\"\u003eThe \u003cstrong data-start=\"282\" data-end=\"300\"\u003eA20B‑2003‑0280\u003c\/strong\u003e is a \u003cstrong data-start=\"306\" data-end=\"341\"\u003ebackplane printed circuit board\u003c\/strong\u003e (PC board) used inside FANUC CNC controller chassis as the \u003cstrong data-start=\"401\" data-end=\"425\"\u003eback panel\/backplane\u003c\/strong\u003e where other control modules plug in. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 data-start=\"502\" data-end=\"522\"\u003e🧩 What It Is\u003c\/h4\u003e\n\u003cul data-start=\"523\" data-end=\"949\"\u003e\n\u003cli data-start=\"523\" data-end=\"558\"\u003e\n\u003cp data-start=\"525\" data-end=\"558\"\u003e\u003cstrong data-start=\"525\" data-end=\"541\"\u003ePart Number:\u003c\/strong\u003e A20B‑2003‑0280\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"559\" data-end=\"836\"\u003e\n\u003cp data-start=\"561\" data-end=\"836\"\u003e\u003cstrong data-start=\"561\" data-end=\"574\"\u003eFunction:\u003c\/strong\u003e A \u003cstrong data-start=\"577\" data-end=\"601\"\u003e3‑slot backplane PCB\u003c\/strong\u003e — this board provides the physical and electrical \u003cstrong data-start=\"652\" data-end=\"672\"\u003eslot connections\u003c\/strong\u003e for up to three plug‑in control cards (e.g., CPU, communication, memory, display modules) inside the FANUC controller rack. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"837\" data-end=\"949\"\u003e\n\u003cp data-start=\"839\" data-end=\"949\"\u003e\u003cstrong data-start=\"839\" data-end=\"850\"\u003eSeries:\u003c\/strong\u003e Part of the \u003cstrong data-start=\"863\" data-end=\"882\"\u003eFANUC A20B‑2003\u003c\/strong\u003e backplane\/back panel series. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-start=\"951\" data-end=\"969\"\u003e🧠 Key Role\u003c\/h4\u003e\n\u003cul data-start=\"970\" data-end=\"1449\"\u003e\n\u003cli data-start=\"970\" data-end=\"1138\"\u003e\n\u003cp data-start=\"972\" data-end=\"1138\"\u003eServes as the \u003cstrong data-start=\"986\" data-end=\"1033\"\u003ephysical structure and electrical interface\u003c\/strong\u003e between the controller’s main electronics and peripheral boards. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1139\" data-end=\"1273\"\u003e\n\u003cp data-start=\"1141\" data-end=\"1273\"\u003eSupports \u003cstrong data-start=\"1150\" data-end=\"1170\"\u003ethree card slots\u003c\/strong\u003e, allowing multiple modules to be installed and interconnected. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1274\" data-end=\"1449\"\u003e\n\u003cp data-start=\"1276\" data-end=\"1449\"\u003eWithout a functioning backplane like this, the controller can’t provide power or proper signaling to other boards — meaning the CNC would fail to initialize or run properly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-start=\"1451\" data-end=\"1479\"\u003e🛠️ Typical Use Cases\u003c\/h4\u003e\n\u003cul data-start=\"1480\" data-end=\"1766\"\u003e\n\u003cli data-start=\"1480\" data-end=\"1623\"\u003e\n\u003cp data-start=\"1482\" data-end=\"1623\"\u003eCommonly found in \u003cstrong data-start=\"1500\" data-end=\"1545\"\u003eFANUC Series 16i, 18i, or 21i controllers\u003c\/strong\u003e with modular card‑based architecture. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1624\" data-end=\"1766\"\u003e\n\u003cp data-start=\"1626\" data-end=\"1766\"\u003eUsed in \u003cem data-start=\"1634\" data-end=\"1654\"\u003ecompact or modular\u003c\/em\u003e CNC units requiring a small number of boards (e.g., CPU + I\/O + display). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-start=\"1768\" data-end=\"1783\"\u003e🔧 Notes\u003c\/h4\u003e\n\u003cul data-start=\"1784\" data-end=\"2042\"\u003e\n\u003cli data-start=\"1784\" data-end=\"1944\"\u003e\n\u003cp data-start=\"1786\" data-end=\"1944\"\u003eMost suppliers sell this \u003cstrong data-start=\"1811\" data-end=\"1853\"\u003eas new, refurbished\/tested, or surplus\u003c\/strong\u003e — some offer \u003cstrong data-start=\"1867\" data-end=\"1903\"\u003ecore exchange or repair services\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1945\" data-end=\"2042\"\u003e\n\u003cp data-start=\"1947\" data-end=\"2042\"\u003eIf damaged, the whole controller rack may not power up or communicate between boards correctly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JJAutomation","offers":[{"title":"New","offer_id":44839062470792,"sku":"A20B-2003-0280","price":0.0,"currency_code":"INR","in_stock":true},{"title":"Used \/ Refurbished","offer_id":46109847879816,"sku":"A20B-2003-0280","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-2026-02-25T150354.159.jpg?v=1772012043","url":"https:\/\/jjautomation.in\/products\/fanuc-back-panel-for-16i-18i-21i-a20b-2003-0280","provider":"JJAutomation","version":"1.0","type":"link"}