Description
๐ FANUC A20B-3300-0293 โ 486 CPU Module with 16 MB DRAM
Description:
The FANUC A20B-3300-0293 is a CPU module used in FANUC CNC control electronics. It features an Intel 486-class processor with 16 megabytes of DRAM memory built onto the board, and is part of the A20B-3300 series of control PCBs. This module provides the central processing power for CNC systems that rely on a modular CPU card architecture.
Key Features:
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๐ง CPU Type: 486 processor โ an industry standard microprocessor used in FANUC controllers before more modern CPU architectures.
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๐พ Memory: 16 MB DRAM integrated on the module, which serves as the main memory for the processor to run control tasks.
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๐ Application: Designed to plug into a main control board / backplane of compatible FANUC CNC controllers (commonly Series 16i / 18i / 21i and similar). It works with other system modules such as display cards, axis control cards, and memory modules.
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๐ฆ Series: Part of the A20B-3300 family of FANUC control PCBs โ a modular system where each board performs a specific function in the CNC electronics.
Typical Use:
This unit acts as the processing core for the CNCโs control electronics. It interprets and executes real-time control software, coordinates motion, manages communication with other cards and I/O interfaces, and handles general CNC system logic.
Compatibility & Notes:
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Often found in older FANUC modular CNC systems where CPU functionality is provided by a dedicated plugin module rather than integrated into a single main board.
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Because itโs based on a 486 architecture, this module is suited to legacy controls and may be slower compared with later Pentium/PowerPC-based CPU cards.
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Typically supplied new, used, or refurbished by industrial parts distributors; warranty and core exchange options vary by supplier.