The FANUC A20B-8101-0119 is an HSSB interface PCB for compatible FANUC CNC communication configurations. HSSB stands for High Speed Serial Bus, a FANUC point-to-point interface designed to transfer large amounts of data at high speed between compatible CNC equipment and PC-based operator or monitoring systems.

This board forms part of the HSSB communication path used with suitable FANUC CNC controls, PANEL i equipment or compatible industrial computer configurations. Exact compatibility depends on the CNC series, control-unit construction, option slot, software and complete PCB revision.

A20B-8101-0119 Product Information

FANUC HSSB Communication Function

HSSB provides a dedicated high-speed communication route between supported FANUC equipment. Depending on the complete system configuration, it can support communication between a CNC and a compatible computer-based display, operator interface or data-processing environment. The board is only one part of the connection; the corresponding interface, optical cable and system software must also be compatible.

Compatibility and Replacement Checks

Confirm the complete A20B-8101-0119 marking and any revision printed on the original PCB. Also compare the HSSB connector, faceplate, mounting points, component layout, CNC model, option-slot type and installed software. Do not substitute A20B-8101-0110, A20B-8101-0111 or other HSSB boards solely because the appearance or base number is similar.

Testing and Installation Notes

REACO CNC checks the board number, revision, PCB condition, HSSB connector, electronic components and communication operation where suitable test equipment is available. Before replacement, back up CNC parameters, programs and machine data. Qualified technicians should isolate power and use anti-static protection when handling the PCB and optical connector.

Related resources: FANUC CNC and robot parts and FANUC PCB repair services.