FANUC A20B-8100-0430 PROFIBUS DP Master Board

The FANUC A20B-8100-0430 is a PROFIBUS DP Master Board used for providing the PROFIBUS master function when installed with the required compatible CNC option hardware. It is handled as a configuration-specific FANUC service part, not as a generic replacement. The original label, installed position and connected hardware provide the starting point for quotation and technical review.

No unverified electrical rating, capacity, processor, software release, interface speed, torque, brake specification or lifecycle claim is published for this item. Existing alarms, photographs of both sides, connector close-ups and backup files are useful evidence because they establish the actual configuration without guessing from the product family.

The exact order number is retained, but the published technical boundary is deliberately conservative. FANUC PROFIBUS option documentation required Do not derive ratings, firmware, protocol, memory, shaft, brake, encoder or host-system compatibility from an adjacent board or motor number.

Its system role must be read with the original machine configuration. For motors, that means the mechanical interface, feedback path and drive must agree. For boards and modules, that means the host CNC, slot, revision, ROM or software evidence, companion hardware, cables and saved parameters must agree before a replacement decision is made.

This item is evaluated only in the machine application represented by its original installation. providing the PROFIBUS master function when installed with the required compatible CNC option hardware.

Direct replacement cannot be confirmed from the board or motor number alone. The complete revision, installed system, connectors, companion hardware and software configuration must be checked.

Compare the complete order number, physical layout and revision with the installed part. Preserve cables, labels and backed-up data before removal so the requested configuration can be checked against the original machine.

Before purchasing A20B-8100-0430, provide complete board number, revision, host CNC, option slot, required add-on board, PROFIBUS network layout, connector, GSD, parameters and backup data. Include the machine maker and model, the reported alarm or service reason, clear photographs, quantity and any relevant parameter, PMC or software backup. Availability, condition, inspection scope, delivery schedule and warranty terms are confirmed after that configuration review.