Programmable Automation Controller Daughterboard
Expansion printed circuit assembly that plugs into main PLC boards of heading 8537, adding analog I/O channels and specialty communication protocols. It extends functionality for specific industrial applications. Classified under 8538.90.3000 as a dedicated part for heading 8537 controllers.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If designed for industrial automatic data processing systems
Expansion cards principally for industrial computers classify under Chapter 84.
If for other electrical machines not specific to control apparatus
General-purpose electrical assemblies without principal use for 8535-8537 go to 8543.
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Import Tips & Compliance
• Provide connector pinouts and firmware compatibility matrices proving sole use with specific PLC models
• Ship with protective ESD packaging and include handling instructions
• Document that board requires host controller programming to function
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