About Modbus Poll
Modbus Poll is a Modbus master simulator for testing and monitoring devices that communicate using the Modbus protocol. It can display multiple slave devices or data areas in separate windows, with each view configured by device ID, function, address, data size, and polling rate. Users can read and write registers and coils, which makes the tool useful for checking both data retrieval and control behavior. The application supports several Modbus transport variants, including RTU, ASCII, TCP/IP, and UDP/IP, with serial-based variants also carried over network transports. It can interpret values in formats such as floating point, double, and long, and supports word-order changes. This makes Modbus Poll useful to developers and technicians testing industrial communication before or alongside a real device setup. Writing values can affect connected equipment, so users should confirm they are connected to a safe test environment.
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