MbusMasterFunctions.writeMultipleFloats Method (Int32, Int32, Single[], Int32)

Modbus function 16 (10 hex) for 32-bit float data types, Preset Multiple Registers/Write Multiple Registers with float data.

[Visual Basic]
Overloads Public Function writeMultipleFloats( _
   ByVal slaveAddr As Integer, _
   ByVal startRef As Integer, _
   ByVal float32Arr As Single(), _
   ByVal numRegs As Integer _
) As Integer

[C#]
public int writeMultipleFloats(
   int slaveAddr,
   int startRef,
   float[] float32Arr,
   int numRegs
);

Parameters

slaveAddr: Modbus address of slave device or unit identifier (Range: 0 - 255)
startRef: Start reference (Range: 1 - $10000)
float32Arr: Buffer with the data to be sent.
numRegs: Number of values to be written (Range: 1-50).

Return Value

BusProtocolErrors.FTALK_SUCCESS on success or error code. See BusProtocolErrors for possible error codes.

Remarks

Writes float values into pairs of output registers (holding registers, 4:00000 table).

Note Modbus does not know about any other data type than discretes and 16-bit registers. Because a float value is of 32-bit length, it will be transferred as two consecutive 16-bit registers. This means that the amount of registers transferred with this function is twice the amount of float values passed to this function.

Note Broadcast supported for serial protocols

MbusMasterFunctions.writeMultipleFloats Method (Int32, Int32, Single[], Int32)

Parameters

Return Value

Remarks

See Also