Using Intelligent SNAP I/O with Allen-Bradley PLC Systems

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Updated: 12/27/2023

This technical note introduces SNAP I/O (brain, mounting rack, and I/O modules) for Allen-Bradley industrial PLC systems that use EtherNet/IP, including ControlLogix, CompactLogix, and MicroLogix.

The technical note briefly presents communication concepts, such as implicit and explicit messaging, and describes how to use implicit messaging to communicate with an A-B RSLogix-based PLC system.