rust-ethernet-ip: Reading Logix PLCs Without OPC

Why it surfaced

This is a sharply bounded piece of industrial software: it sends explicit request/response messages directly to Logix PLCs, with APIs for Rust, .NET, Python, C, and C++. The homepage is unusually clear about what it is not—a cyclic implicit-I/O scanner or adapter—and reports a stable 1.2.0 release, MIT licensing, and real-hardware testing.

An open-source EtherNet/IP/CIP client driver for reading, writing, batching, and discovering tags on Allen-Bradley CompactLogix and ControlLogix PLCs.