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ModMaster

A free Windows utility for testing, debugging, and learning Modbus master communication.

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ModSlave

A free Windows utility for simulating Modbus slave devices and testing industrial communication scenarios.

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HexSpy

A free technical utility for inspecting, converting, and analyzing hexadecimal data.

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Modbus RTU vs Modbus TCP

A practical comparison between Modbus RTU and Modbus TCP, including architecture, communication media, performance, advantages, limitations, and typical industrial use cases.

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