Tutorial 3: Modbus RTU - Function 01 (01hex) Read Coils
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Tutorial 3: Modbus RTU - Function 01 (01hex) Read Coils
Function 01 (01hex) Read Coils Reads the ON/OFF status of discrete coils in the slave. Request The request message specifies the starting coil and quantity of coils to be read. Example of a request to read 10...22 (Coil 11 to 23) from slave device address 4: Response The coil status response message is packed as one coil per bit of the data ...
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