A16B-2200-0918 Fanuc PCB Board A16B22000918 AI6B-22OO-O9I8

A16B-2200-0918 | FANUC Series 16/18 Option 1 Graphic and Remote Buffer PCB — CRT Video / DNC / Expanded Graphics RAM / F16B

Two Advanced Functions in One Option Board

The A16B-2200-0918 combines two significant CNC capability expansions in its Option 1 slot:

Graphic display processing with expanded RAM: "expanded graphic CPU RAM" on this board. This expanded memory allows the graphics processor to maintain higher-resolution display content and more complex graphical interface states — including tool path graphic check displays — without the memory constraints of the base main board's display function.

Remote Buffer communication: Remote Buffer is FANUC's high-speed DNC interface technology. Unlike standard RS-232C DNC (which streams programme data in real-time at modest baud rates), Remote Buffer provides:

• A large on-board memory buffer that pre-loads programme data from a host computer at high speed
• The CNC reads from this local buffer at its own pace — independent of the host computer's real-time availability
• High-speed interface eliminates communication timing issues that can interrupt machining These two functions together — enhanced graphics and high-speed DNC — address the two most common capability limitations on Series 16/18 CNC machine tools in demanding production environments.

Key Specifications

Remote Buffer vs Standard RS-232C DNC

The distinction between Remote Buffer and standard RS-232C DNC is practical:

Standard RS-232C DNC (as on A16B-2200-0910): The host PC sends programme blocks one at a time as the CNC executes them. If the PC has any processing delay — due to other tasks, network lag, or software overhead — the CNC's block buffer runs empty. This causes a momentary feedrate drop (an audible and visible interruption in the cutting motion) known as "DNC stutter." For precision surfaces, this stutter creates visible marks.

Remote Buffer: The host downloads the entire (or large portion of the) programme into the Remote Buffer memory on A16B-2200-0918 at high speed before or during machining. The CNC reads from its local buffer — which is always ready with data — eliminating the PC timing dependency. DNC stutter is eliminated. Precision machining at full programmed feedrate, even with very long programmes, is maintained without interruption.

Application Scenarios

Precision die-and-mould machining: A Series 16-B CNC die-and-mould machining centre requires DNC supply of large tool path files (hundreds of thousands of blocks). Standard DNC produces unacceptable surface marks. The A16B-2200-0918's Remote Buffer provides flawless block supply without stutter.

Graphic board fault with DNC failure: A Series 16/18 CNC loses both its graphical check capability and its Remote Buffer DNC communication simultaneously. The A16B-2200-0918 is identified. Replacement restores both functions.

FAQ

Q1: What is the difference between A16B-2200-0910 (Option 1 Graphic + RS-232) and A16B-2200-0918 (Option 1 Graphic + Remote Buffer)?

A16B-2200-0910 serves the earlier Series 16 (F16 model), adding graphics and standard RS-232C communication. A16B-2200-0918 serves the Series 16-B (F16B model), upgrading the communication from RS-232C to Remote Buffer — a higher-speed, buffered DNC interface that eliminates DNC timing issues. Quotes A16B-2200-0918 at , reflecting the enhanced capability versus the basic option board.

Q2: Does Core Exchange mean the faulty board must be returned?

Yes. "core exchange is required" for A16B-2200-0918. A replacement board is supplied and the faulty board must be returned as the core. The exchange credit reduces the net cost. Unlike standard purchase, core exchange is not optional — the faulty unit must be submitted.

Q3: If A16B-2200-0918 fails, does DNC operation stop completely?

If the Remote Buffer hardware fails, the Remote Buffer DNC mode is no longer available. The CNC may still support standard RS-232C communication through other ports. Whether the CNC can continue operating in a degraded DNC mode depends on the specific machine configuration and whether alternative serial ports are available for drip-feed DNC.

Q4: Does replacing A16B-2200-0918 require any DNC communication parameter re-entry?

Communication parameters (baud rate, stop bits, parity, Remote Buffer settings) are stored in the CNC's main parameter SRAM — not in the option board. After fitting the replacement A16B-2200-0918, the existing communication parameters are re-applied automatically. Verify DNC communication with a test programme transfer before returning to production.

Q5: Is A16B-2200-0918 also compatible with FANUC Series 18 machines?

compatibility with "FANUC Series 16/18 CNC control systems." The Series 16 and 18 share the same option board architecture, and the Option 1 slot accepts the same boards across both platforms. The "F16B" designation in 's listing refers to the 16/18 B-generation platform family.