Used FANUC A20B-8101-0350/08B DeviceNet Sub-Board

The FANUC A20B-8101-0350/08B is a genuine, high-reliability DeviceNet fieldbus communication sub-board (commonly referred to as the "Small Board" or daughter card) designed for FANUC industrial robot controllers and CNC architectures. This compact interface module slots directly onto the primary host motherboard or network rack, expanding your system's network capability to interface with external PLCs, I/O blocks, and peripheral automation machinery over the DeviceNet protocol. Tested strictly for data packet stability, it serves as an ideal drop-in MRO replacement part to eliminate communication lag.

Part Number: A20B-8101-0350/08B (Also covers A20B-8101-0350)
Condition: Used / Refurbished
Brand: FANUC
Board Type: DeviceNet Sub-Board / Daughter Card Interface
Key Benefits: Compact modular design, rapid fieldbus synchronization, high noise immunity, and plug-and-play original OEM compatibility.

Product Detail

Genuine FANUC A20B-8101-0350/08B DeviceNet Communication Sub-Board

Maximize your factory network uptime without investing in high-priced full-chassis controller upgrades with this authentic FANUC A20B-8101-0350/08B DeviceNet Small Board. Serving as a dedicated physical layer coprocessor module, this premium daughter board slots seamlessly onto your main processing architecture, allowing your system to process cyclic input/output maps, handshakes, and diagnostic bits across the shop floor with zero communication drops.

Why Source Refurbished FANUC Sub-Boards From Us?

Rigorous Network Node Testing: Small communication cards are sensitive to contact resistance and component aging. Every A20B-8101-0350/08B board we stock undergoes rigorous data-transmission loop testing on authentic FANUC test stands. We verify station configurations, baud-rate response, and pin signal paths to ensure out-of-the-box reliability.
Seamless Hardware Plug-in: Manufactured strictly to original FANUC OEM physical specifications. Your technical maintenance crew can perform a rapid direct swap—simply unplug the malfunctioning daughter card and press our replacement module into the host board headers. No modification or messy rewiring is required.
Protect Your Production Assets Economically: A sudden network card failure can freeze an entire production line, triggering costly downtime flags. Sourcing our certified pre-owned original sub-boards provides an immediate, budget-friendly alternative to premium OEM retail prices and prolonged supplier backlogs.
Industrial Noise Suppression: Engineered with robust circuit traces and protective coatings, this interface card offers stable resistance against factory ground loops, ambient electrical noise, and constant operational vibrations.