FANUC A20B-8100-0430
Product Name: FANUC PROFIBUS-DP Master Board
Product Introduction: The FANUC A20B-8100-0430 is a PROFIBUS-DP master communication board designed for FANUC Series 16i, 18i, and 21i CNC controls. It enables connectivity between the CNC system and factory automation devices using the PROFIBUS-DP protocol.
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-8100-0430
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Product Type
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PROFIBUS-DP Master Board
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Compatible Controls
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Series 16i, 18i, 21i
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Protocol
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PROFIBUS-DP
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Mounting
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Secondary slot on riser from main i-series control PCB
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Weight
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Approx. 1 kg
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Dimensions
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37 × 28 × 5 cm (approx.)
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Functional Features:
- Acts as PROFIBUS-DP master in CNC control architecture
- Enables communication between CNC and factory devices (PLCs, drives, sensors)
- Supports expansion for multi-spindle, additional CPUs, and communication interfaces
- Fits in riser slot allowing conventional integrated controls to expand capabilities
Structural Characteristics:
- PCB mounts on riser board extending from main CPU board
- Integrated bus interface circuitry
- Multi-layer surface-mount construction
Installation Requirements:
- Install in secondary slot on riser board
- Ensure compatibility with control model and software version
- Verify PROFIBUS-DP option is enabled in system parameters
Usage Notes:
- Board must match exact control generation and software version
- Some installations require additional FANUC software option activation
- GSD file may be needed for PLC/master configuration
- Handle with ESD precautions












