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In the world of industrial automation, Modbus remains one of the most widely used communication protocols. To test, simulate, or troubleshoot Modbus devices, engineers often turn to software like Simply Modbus — a lightweight, user-friendly application that allows users to act as a Modbus master or slave over RTU or TCP. However, a quick look at search logs reveals a persistent trend: users appending terms like “license key,” “crack,” “serial,” or “top” to the software’s name, hoping to bypass payment. simply modbus license key top