Description
📌 FANUC A20B-3300-0340 — Display Control Module
Description:
The FANUC A20B-3300-0340 is a display control module / LCD/MDI interface board used in FANUC industrial CNC controllers. It’s part of the A20B-3300 series of PCBs and specifically handles graphic/display functions and operator interface communication for CNC systems.
🧠 What It Does
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🖥️ Display Control Module: Controls the video output and display communication for the CNC operator panel (LCD or CRT). It’s often referred to as a display control card or MDI/LCD interface module inside the controller rack.
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🔌 Interfaces: Provides the connection between the CNC processor and the machine’s display panel — sometimes including serial communication (like RS-232/RS-422) for interfacing with operator inputs and screen output.
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📍 Controller Compatibility: Used in FANUC i-Series “B” controllers — such as 0i-B, 16i-B, 18i-B, and 21i-B CNC control systems.
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🧱 Forms Part of HMI: It’s typically plugged into the controller’s main board or expansion rack and works alongside the CPU and other PCBs to drive the user interface and display.
🛠️ Key Points
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✔️ Part Type: Display/Graphic control electronic module (PCB).
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✔️ Used In: FANUC CNC systems where the operator display needs interfacing (i-Series B controls).
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✔️ Function: Drives display graphics, handles LCD/MDI signals, and optionally supports Ethernet communications for operator interface.
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🔄 Availability: Often sold new, refurbished, or surplus via industrial parts suppliers.