Documentation

MbusMasterFunctionsreadMultipleMod10000 Method (Int32, Int32, Int32)

Modbus function 3 (03 hex) for 32-bit modulo-10000 long int data types, Read Holding Registers/Read Multiple Registers as modulo-10000 long int data.

Namespace:  FieldTalk.Modbus.Master
Assembly:  FieldTalk.Modbus.Master (in FieldTalk.Modbus.Master.dll) Version: 2.15.2-eval+3d8362b4bb861c05760d48b11d303e954bb8597c
Syntax
Copy
public int readMultipleMod10000(
	int slaveAddr,
	int startRef,
	int[] int32Arr
)

Parameters

slaveAddr
Type: SystemInt32
Modbus address of slave device or unit identifier (Range: 1 - 255)
startRef
Type: SystemInt32
Start reference (Range: 1 - 65536)
int32Arr
Type: SystemInt32
Buffer which will be filled with the data read. The length of the array determines how many values are read (Range: 1-62).

Return Value

Type: Int32
BusProtocolErrors.FTALK_SUCCESS on success or error code. See BusProtocolErrors for possible error codes.
Remarks
Reads the contents of pairs of consecutive output registers (holding registers, 4:00000 table) representing a modulo-10000 long int value into 32-bit int values and performs number format conversion.
Note Note
Modbus does not know about any other data type than discretes and 16-bit registers. Because a modulo-10000 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 int values passed to this function.
Note Note
No broadcast supported
See Also