{"product_id":"fanuc-from-sram-module-for-16i-18i-21i-a20b-3900-0164","title":"Fanuc FROM\/SRAM module for 16i\/ 18i\/ 21i A20B-3900-0164","description":"\u003ch3 data-start=\"142\" data-end=\"203\"\u003e📦 \u003cstrong data-start=\"149\" data-end=\"203\"\u003eFANUC A20B-3900-0164 — Memory (FROM + SRAM Module)\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"205\" data-end=\"448\"\u003eThe \u003cstrong data-start=\"209\" data-end=\"233\"\u003eFANUC A20B-3900-0164\u003c\/strong\u003e is a \u003cstrong data-start=\"239\" data-end=\"278\"\u003ememory module printed circuit board\u003c\/strong\u003e used inside certain FANUC CNC controllers. It holds essential firmware and runtime data that the CNC control unit needs to operate. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"450\" data-end=\"465\"\u003e\u003cstrong data-start=\"450\" data-end=\"465\"\u003eKey Details\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"466\" data-end=\"1843\"\u003e\n\u003cli data-start=\"466\" data-end=\"619\"\u003e\n\u003cp data-start=\"468\" data-end=\"619\"\u003e📌 \u003cstrong data-start=\"471\" data-end=\"480\"\u003eType:\u003c\/strong\u003e Memory module, combining \u003cstrong data-start=\"506\" data-end=\"539\"\u003eFROM (Flash Read-Only Memory)\u003c\/strong\u003e and \u003cstrong data-start=\"544\" data-end=\"565\"\u003eSRAM (Static RAM)\u003c\/strong\u003e in one board. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"620\" data-end=\"743\"\u003e\n\u003cp data-start=\"622\" data-end=\"743\"\u003e💾 \u003cstrong data-start=\"625\" data-end=\"643\"\u003eFROM Capacity:\u003c\/strong\u003e \u003cstrong data-start=\"644\" data-end=\"653\"\u003e32 MB\u003c\/strong\u003e — stores the controller’s core software\/firmware. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"744\" data-end=\"882\"\u003e\n\u003cp data-start=\"746\" data-end=\"882\"\u003e⚡ \u003cstrong data-start=\"748\" data-end=\"766\"\u003eSRAM Capacity:\u003c\/strong\u003e \u003cstrong data-start=\"767\" data-end=\"775\"\u003e2 MB\u003c\/strong\u003e — stores runtime data, parameters, and battery-backed information. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"883\" data-end=\"1119\"\u003e\n\u003cp data-start=\"885\" data-end=\"1119\"\u003e🧠 \u003cstrong data-start=\"888\" data-end=\"901\"\u003eFunction:\u003c\/strong\u003e The FROM section contains the CNC control software; the SRAM section retains configuration data, machine parameters, and part programs while powered off (battery-backed memory). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1120\" data-end=\"1438\"\u003e\n\u003cp data-start=\"1122\" data-end=\"1438\"\u003e🔌 \u003cstrong data-start=\"1125\" data-end=\"1142\"\u003eHow It Works:\u003c\/strong\u003e Plugs into a designated memory slot on the CNC controller’s main board\/backplane and is essential for the controller to boot and function correctly. Missing or faulty memory modules can prevent the machine from starting up or cause loss of important data. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1439\" data-end=\"1662\"\u003e\n\u003cp data-start=\"1441\" data-end=\"1662\"\u003e📍 \u003cstrong data-start=\"1444\" data-end=\"1470\"\u003eTypical Compatibility:\u003c\/strong\u003e Used in FANUC \u003cem data-start=\"1485\" data-end=\"1508\"\u003ei-Series (“B” models)\u003c\/em\u003e controllers like \u003cstrong data-start=\"1526\" data-end=\"1549\"\u003e16i-B, 18i-B, 21i-B\u003c\/strong\u003e and sometimes in \u003cem data-start=\"1567\" data-end=\"1580\"\u003e30i\/31i\/32i\u003c\/em\u003e systems that still use FROM\/SRAM modules. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1663\" data-end=\"1843\"\u003e\n\u003cp data-start=\"1665\" data-end=\"1843\"\u003e🛠️ \u003cstrong data-start=\"1669\" data-end=\"1680\"\u003eStatus:\u003c\/strong\u003e Often discontinued by FANUC but widely available as new surplus or \u003cstrong data-start=\"1748\" data-end=\"1777\"\u003erefurbished memory boards\u003c\/strong\u003e from aftermarket suppliers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JJAutomation","offers":[{"title":"New","offer_id":44832933347464,"sku":"A20B-3900-0164","price":0.0,"currency_code":"INR","in_stock":true},{"title":"Used \/ Refurbished","offer_id":46109847224456,"sku":"A20B-3900-0164","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-2026-02-24T183516.248.jpg?v=1771938322","url":"https:\/\/jjautomation.in\/products\/fanuc-from-sram-module-for-16i-18i-21i-a20b-3900-0164","provider":"JJAutomation","version":"1.0","type":"link"}