The FANUC A02B-0319-B502 serves as the operator interface/basic control unit for FANUC Series 0i-D CNC systems (Model A/B/C/D), featuring an integrated 8.5-inch LCD monochrome/color display and MDI (Manual Data Input) keypad for program editing, axis jogging, tool offset management, and machine operation. This is a basic unit that requires additional PCBs (like axis cards, I/O interfaces, servo amplifiers) and software reloading by the customer or service technician to form a complete CNC controller for lathes, mills, and machining centers.
Designed for panel mounting (dimensions approximately 2.5″ x 14.5″ x 6.5″, weight ~4 lbs), the unit operates on 24 VDC input and supports standard FANUC 0i-D functions including program display, parameter screens, diagnostics, maintenance info, and waveform analysis when fully configured. It connects via rack backplane or ribbon cables to other system modules and supports options like Ethernet/HSSB communication, dual check safety, and expanded axis control (up to 6-8 axes). The membrane-style keypad provides tactile feedback for function keys (F0-F9), cursor, numeric entry, and soft keys, while the LCD displays menus in multiple languages.
As a discontinued OEM part, A02B-0319-B502 units are available new original, refurbished, or core exchange from FANUC parts specialists, typically with 12-month warranties. Replacement requires matching the exact machine configuration (software parameters, axis count, spindle interface) to avoid compatibility issues.
