{"product_id":"fanuc-from-sram-module-for-16i-18i-21i-a20b-3900-0162","title":"Fanuc FROM\/SRAM module for 16i\/ 18i\/ 21i A20B-3900-0162","description":"\u003ch3 data-start=\"94\" data-end=\"120\"\u003e📌 What This Part Is\u003c\/h3\u003e\n\u003cp data-start=\"121\" data-end=\"423\"\u003eThe \u003cstrong data-start=\"125\" data-end=\"149\"\u003eFANUC A20B‑3900‑0162\u003c\/strong\u003e is a \u003cstrong data-start=\"155\" data-end=\"178\"\u003ememory board\/module\u003c\/strong\u003e used in industrial FANUC CNC controller systems. It combines \u003cstrong data-start=\"240\" data-end=\"260\"\u003eFlash ROM (FROM)\u003c\/strong\u003e and \u003cstrong data-start=\"265\" data-end=\"286\"\u003eStatic RAM (SRAM)\u003c\/strong\u003e on one module to store essential controller firmware, configuration data, and runtime information. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-start=\"425\" data-end=\"447\"\u003e🧠 Key Functions\u003c\/h3\u003e\n\u003cul data-start=\"448\" data-end=\"1331\"\u003e\n\u003cli data-start=\"448\" data-end=\"641\"\u003e\n\u003cp data-start=\"450\" data-end=\"641\"\u003e💾 \u003cstrong data-start=\"453\" data-end=\"470\"\u003eData Storage:\u003c\/strong\u003e This module typically includes \u003cstrong data-start=\"502\" data-end=\"531\"\u003e16 MB of Flash ROM (FROM)\u003c\/strong\u003e — used for storing the CNC controller’s firmware and system programs. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"642\" data-end=\"807\"\u003e\n\u003cp data-start=\"644\" data-end=\"807\"\u003e⚡ \u003cstrong data-start=\"646\" data-end=\"665\"\u003eWorking Memory:\u003c\/strong\u003e It also includes \u003cstrong data-start=\"683\" data-end=\"699\"\u003e3 MB of SRAM\u003c\/strong\u003e — used as working memory for runtime data and controller variables. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"808\" data-end=\"1069\"\u003e\n\u003cp data-start=\"810\" data-end=\"1069\"\u003e📋 \u003cstrong data-start=\"813\" data-end=\"831\"\u003eCritical Role:\u003c\/strong\u003e Without a functioning memory module like this, a FANUC CNC controller may fail to initialize properly or could lose stored parameters and system programs if the memory data is corrupted or missing. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1070\" data-end=\"1331\"\u003e\n\u003cp data-start=\"1072\" data-end=\"1331\"\u003e🔌 \u003cstrong data-start=\"1075\" data-end=\"1091\"\u003eIntegration:\u003c\/strong\u003e Installed inside the controller electronics rack or motherboard assembly, this module interfaces with the main logic\/CPU boards to provide the controller with persistent storage and operational memory. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1333\" data-end=\"1354\"\u003e🛠️ Typical Use\u003c\/h3\u003e\n\u003cul data-start=\"1355\" data-end=\"1796\"\u003e\n\u003cli data-start=\"1355\" data-end=\"1616\"\u003e\n\u003cp data-start=\"1357\" data-end=\"1616\"\u003eDesigned for use in \u003cstrong data-start=\"1377\" data-end=\"1425\"\u003eFANUC Series 20 and i‑Series “B” controllers\u003c\/strong\u003e (including \u003cem data-start=\"1437\" data-end=\"1458\"\u003e16i‑B, 18i‑B, 21i‑B\u003c\/em\u003e and similar legacy systems), where systems require non‑volatile firmware storage and volatile SRAM for runtime tasks. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1617\" data-end=\"1796\"\u003e\n\u003cp data-start=\"1619\" data-end=\"1796\"\u003eOften found in older or legacy CNC controller hardware that uses FROM\/SRAM modules for core memory rather than modern flash or SSD storage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2040\" data-end=\"2203\"\u003e \u003c\/p\u003e","brand":"JJAutomation","offers":[{"title":"New","offer_id":44832930332808,"sku":"A20B-3900-0162","price":0.0,"currency_code":"INR","in_stock":true},{"title":"Used \/ Refurbished","offer_id":46109847158920,"sku":"A20B-3900-0162","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-2026-02-24T141614.505.jpg?v=1771922783","url":"https:\/\/jjautomation.in\/products\/fanuc-from-sram-module-for-16i-18i-21i-a20b-3900-0162","provider":"JJAutomation","version":"1.0","type":"link"}