The A16B-1211 series is confirmed by EASYCNC and eBay listings to cover a range of robot-related PCBs:
| Board | Function |
|---|---|
| A16B-1211-0041 | Robot PCB |
| A16B-1211-0170 | This product (017x range) |
| A16B-1211-0190 | Robotics Backplane PCB |
| A16B-1211-0272 | Axes Control Board PCB |
| A16B-1211-0780 | Robotics SNC 2-Axis Control Weld PCB |
| A16B-1211-0850 | Power Supply PCB |
The A16B-1211-0170 occupies the 017x position — among the lower-numbered boards in the series. eBay confirms its availability as a used board (revision /16G), listed by a specialist FANUC board supplier at .
| Parameter | Value |
|---|---|
| Part Number | A16B-1211-0170 |
| Revision | /16G |
| Series | A16B-1211 |
| Category | Robot and CNC control |
| Manufacturer | FANUC Corporation |
Backplane PCBs (A16B-1211-0190): Providing the bus infrastructure within robot controller card cages — the backbone that allows multiple boards to communicate and share power.
Axis control boards (A16B-1211-0272): Managing servo axis control for specific robot configurations.
Welding control boards (A16B-1211-0780): Robotics SNC 2-axis control for welding robot applications — the weld-specific servo control card.
Power supply boards (A16B-1211-0850): Providing regulated power distribution within the controller.
The A16B-1211-0170 at the 017x position in this series occupies the lower numbered section — consistent with a foundational control or interface function within the FANUC robot controller architecture.
Robot controller PCB fault: A FANUC robot controller develops a fault traceable to the A16B-1211-0170 PCB. The board is identified from its part number and revision label. Replacement (confirmed revision /16G) restores the controller function.
Robot controller overhaul: A production facility overhauling an older FANUC robot controller replaces the A16B-1211-0170 as part of a comprehensive electronics renewal.
Q1: How do I confirm A16B-1211-0170 is the correct board for my FANUC robot controller?
Read the part number and revision from the installed board's label. Confirm both the part number (A16B-1211-0170) and the revision (/16G or other) from the label. Cross-reference with the applicable FANUC robot controller maintenance manual's spare parts table.
Q2: Does revision /16G matter when ordering A16B-1211-0170?
For A16B boards with high revision numbers like /16G, the revision indicates significant circuit iteration over the board's production life. Different revisions may have different component layouts or circuit changes. Specifying the revision when ordering helps ensure compatibility with the specific robot controller configuration.
Q3: Is A16B-1211-0170 specific to robot applications or also used in CNC systems?
The A16B-1211 series is confirmed as primarily robot-related (robotics backplane, welding control, robot PCBs). The A16B-1211-0170 at the 017x position is within this robot-focused series. Whether it also serves specific CNC configurations is confirmed from the host system documentation.
Q4: Does replacing A16B-1211-0170 require robot programme backup?
If A16B-1211-0170 is a logic or interface board (not the main CPU), robot programmes are unaffected by its replacement. Robot programmes reside in the controller's main CPU memory. However, always perform a full programme backup as a precaution before any robot controller board maintenance.
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