FANUC A20B-8101-0550 CC-Link Remote Device PCB

Overview

The A20B-8101-0550 is a FANUC robot communication PCB in the A20B-8101 family.

It is identified as a CC-Link remote device board for robot control systems, which places it in the communication-interface section of the controller rather than in the main-board, memory, or servo category.

This board is used in robot systems that already rely on a CC-Link communication structure at the controller level.

In practical maintenance work, boards of this type are chosen by exact function and exact installed position because the communication architecture of the robot controller depends on the original board layout. 

Replacing it with the same model helps preserve the controller’s existing network interface structure and board-family consistency.

Technical Data

Applications

This board is suitable for FANUC robot controllers that already use a CC-Link remote device communication structure.

It is especially useful in communication-board replacement, robot controller repair, and long-term maintenance where the installed controller must keep the same network-board layout.

Replacement Guidance

Before ordering, confirm the installed part number and verify that the original controller uses a CC-Link remote device board in the same position.

For robot communication boards, matching the exact model is important because the board is tied directly to the communication structure already configured in the controller.

FAQ

Q1: What kind of board is A20B-8101-0550?

It is a CC-Link remote device PCB used in FANUC robot controller hardware. Its role is tied to communication and network-side interface functions, not to the main CPU, display, or servo power section.

Q2: Why is the CC-Link function important?

Because the communication protocol is part of the board’s core identity. A robot controller built around CC-Link needs the same communication-board type to keep its original network structure intact.

This is one of the most important points to confirm before replacement.

Q3: Is this a main board?

No. This model belongs to the communication-board category, not the main-board category.

It handles network-side communication duties inside the robot controller rather than core control processing.

Q4: Why does exact model matching matter?

Communication boards are selected by installed function, controller structure, and interface role.

Even if another board looks similar, it may not serve the same protocol or internal connection purpose. Using the same part number helps preserve the original controller architecture.

Q5: What should be checked before ordering?

Check the installed board code, confirm the controller uses CC-Link remote device communication, and verify that the original board is A20B-8101-0550.

These are the main compatibility points for a correct replacement.