Digital guide
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FANUC A20B-8101-0420
Product Name: FANUC Fast Ethernet Communication Board (Factory LAN / EtherNet/IP)
Product Introduction: The FANUC A20B-8101-0420 is an option communication board for FANUC CNC systems, providing Fast Ethernet connectivity for factory networking, data server functions, and industrial Ethernet protocols including EtherNet/IP.
Detailed content
Technical Specifications:
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Parameter
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Value
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Manufacturer
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FANUC
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Part Number
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A20B-8101-0420
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Product Type
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Communication Board / Option PCB
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Compatible Systems
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FANUC 16i/18i/21i, 0i, 30i series
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Communication
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Fast Ethernet (10/100 Mbps)
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Supported Protocols
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Factory LAN, EtherNet/IP, Data Server function
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Mounting
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Option slot on CPU board
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Cooling
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Natural convection
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Functional Features:
- Provides additional Ethernet port for CNC networking
- Supports FOCAS, FTP, and MT-Connect protocols
- Enables data server function for network program storage
- Allows DNC operation streaming large programs from server
- Industrial Ethernet connectivity for factory automation integration
Structural Characteristics:
- Compact PCB designed for option slot installation
- Surface-mount Ethernet controller and interface components
- Gold-plated edge connector for CPU board interface
Installation Requirements:
- Power off CNC and disconnect main power before installation
- Wear ESD protection
- Insert board into correct option slot; align with guides and press firmly
- Secure with screws if applicable
- Configure network parameters (IP, subnet, gateway) after installation
Usage Notes:
- Verify board compatibility with control model and software version
- Some functions require separate FANUC software option key
- Configure parameters #904–#946 for embedded Ethernet settings
- Test connectivity with target system after installation
- Handle with ESD precautions; avoid bending connector pins
