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| Place of Origin | JAPAN |
| Brand Name | FANUC |
| Certification | CE ROHS |
| Model Number | A20B-8101-0580 |
The A20B-8101-0580 is a FANUC robot backplane PCB in the A20B-8101 family. It is described as an R-30iA Mate backplane board, which means it belongs to the structural board-support section of the robot controller rather than to the main processor, display, or communication-card section.
A backplane board plays a critical role inside the controller because it supports the internal board arrangement and helps define how related boards are positioned within the system.
In service work, this is not treated as a general spare PCB.
It must match the exact controller family and internal hardware layout already used in the robot controller.
Using the same board model helps preserve the original structure of the R-30iA Mate platform.
| Parameter | Value |
|---|---|
| Part Number | A20B-8101-0580 |
| Manufacturer | FANUC |
| Product Type | Backplane PCB / PC Board |
| Product Series | A20B-8101 |
| Description | R-30iA Mate Backplane Board |
| Hardware Context | FANUC Robot Controller |
| Lifecycle Status | Discontinued by manufacturer |
This board is suitable for installed FANUC R-30iA Mate robot controllers where the existing system already uses the same backplane arrangement.
It is especially relevant in controller restoration, structural board replacement, and hardware repair where the original internal board-support layout must remain unchanged.
Before ordering, confirm the installed part number, verify that the controller platform is R-30iA Mate, and make sure the original internal backplane position uses A20B-8101-0580.
On backplane boards, platform matching is essential because the backplane directly supports the controller’s internal hardware structure.
Q1: What kind of board is A20B-8101-0580?
It is an R-30iA Mate backplane PCB for FANUC robot controller hardware.
Its role is structural: it supports the internal board arrangement of the controller rather than acting as a CPU, communication card, or display board.
Q2: Why is the R-30iA Mate description important?
Because that identifies the controller family the board belongs to.
Backplane boards are chosen by exact hardware platform, so the controller family is one of the most important replacement checks.
Q3: What does a backplane board do in this controller?
A backplane board supports the internal organization of the controller hardware. It helps define how related boards are mounted and connected inside the unit, which is why it must match the original structure already used in the controller.
Q4: Why does exact part-number matching matter?
Because a backplane is tied directly to the physical and electrical layout of the controller. A visually similar board may not fit the same internal arrangement.
Matching the exact part number helps preserve the original hardware configuration.
Q5: What should be checked before ordering?
Check the installed board code, confirm the controller is R-30iA Mate, and verify that the original backplane board is A20B-8101-0580.
These are the main points to confirm for a correct replacement.
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