FANUC A20B-2200-0490 is an I/O control printed circuit board used inside compatible FANUC connector-panel I/O modules. It processes machine input and output signals between the CNC, sensors, switches, relays and other machine-side devices.

This board is commonly associated with the A03B-0824-C001 I/O module. Because A20B-2200-0490 boards may carry a slash revision such as /10A, the complete PCB number and assembled-unit model must be checked before replacement.

A20B-2200-0490 Product Information

I/O Signal Control Function

Within the assembled I/O module, the A20B-2200-0490 board supports communication and signal processing for machine-side digital inputs and outputs. The associated basic module uses JD1A/JD1B I/O Link connectors, CE53/CE54 DI/DO connectors and LINK, ALM and FUSE status indicators.

Board and Module Identification

A20B-2200-0490 identifies the internal PCB, while A03B-0824-C001 identifies a compatible complete I/O module. Confirm whether the order requires the bare board or the assembled module with housing and connectors. The supplied scope should match the product photos and quotation.

Replacement Compatibility

Match the full A20B number, slash revision, A03B unit number, connector layout and machine configuration. A03B-0824 I/O Link i basic modules must not be mixed with incompatible A03B-0815 extension modules. Back up CNC and PMC data before service, isolate 24VDC power and use ESD protection when handling the PCB.

Related resources: FANUC PCB boards, FANUC I/O modules and FANUC technical support.