EasyModbusTCP/UDP/RTU .java Wiki
Modbus TCP, Modbus UDP and Modbus RTU client/server Java library
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public static void main(String[] args)
{
ModbusClient modbusClient = new ModbusClient("127.0.0.1", 1536);
try
{
modbusClient.Connect();
//Write Float value to Register 10 and 11
modbusClient.WriteMultipleRegisters(9, ModbusClient.ConvertFloatToTwoRegisters((float)(1323.55)));
//Write 32 bit value to Register 12 and 13
modbusClient.WriteMultipleRegisters(11, ModbusClient.ConvertDoubleToTwoRegisters((1323554)));
//Read Float Value from Register 10 and 11
System.out.println(ModbusClient.ConvertRegistersToFloat(modbusClient.ReadHoldingRegisters(9, 2)));
//Read 32 Bit Value from Register 12 and 13
System.out.println(ModbusClient.ConvertRegistersToDouble(modbusClient.ReadHoldingRegisters(11, 2)));
}
catch (Exception e)
{
System.out.println(e.toString());
}
}