ModbusManager is described as 'Modbus master/slave tool for Windows with drag-and-drop HMI dashboards, data logging, alarms and Structured Text scripting' and is an app. There are more than 10 alternatives to ModbusManager for a variety of platforms, including Windows, Linux, Web-based, Flathub and SaaS apps. The best ModbusManager alternative is CoreBus, which is both free and Open Source. Other great apps like ModbusManager are ModbusScope, ModSim, ModScan and QModBus.
Modbus Poll is a Modbus master simulator designed primarily to help developers of Modbus slave devices or others that want to test and simulate the Modbus protocol. With the multiple document interface you can monitor several Modbus slaves and/or data areas at the same time.
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