FieldTalk Modbus Master Library for .NET

MbusMasterFunctionsreadMultipleRegisters Method (Int32, Int32, Array, Int32)

Modbus function 3 (03 hex), Read Holding Registers (16-bit, 32-bit, 64-bit and floating point single and double).

Namespace: FieldTalk.Modbus.Master
Assembly: FieldTalk.Modbus.Master (in FieldTalk.Modbus.Master.dll) Version: 2.15.0-eval+f1f7a3a1b2b5c590f6d8edc51e22eb407f1d6052

Syntax

C++

Copy

public int readMultipleRegisters(
	int slaveAddr,
	int startRef,
	Array regArr,
	int numRegs
)

Public Function readMultipleRegisters ( 
	slaveAddr As Integer,
	startRef As Integer,
	<OutAttribute> regArr As Array,
	numRegs As Integer
) As Integer

public:
int readMultipleRegisters(
	int slaveAddr, 
	int startRef, 
	[InAttribute] [OutAttribute] Array^ regArr, 
	int numRegs
)

Parameters

slaveAddr: Type: SystemInt32
Modbus address of slave device or unit identifier (Range: 1 - 255)
startRef: Type: SystemInt32
Start register (Range: 1 - 65536)
regArr: Type: SystemArray
Array which will be filled with the data read. Accepted array types are Int16[], UInt16[], Int32[], UInt32[], Int64[], UInt64[], float[] and double[].
numRegs: Type: SystemInt32
Number of values to be read (Range: 1-125 for 16-bit, 1-62 for 32-bit and floats, 1-31 for 64-bit and doubles).

Return Value

Type: Int32
BusProtocolErrors.FTALK_SUCCESS on success or error code. See BusProtocolErrors for possible error codes.

Remarks

Reads the contents of the holding registers (4:00000 table).

Note
No broadcast supported

Reference

MbusMasterFunctions Class

readMultipleRegisters Overload

FieldTalk.Modbus.Master Namespace

FieldTalk Modbus Master Library for .NET
Library version 2.15.0

MbusMasterFunctionsAddLanguageSpecificTextSet("LST4C552AF1_0?cpp=::|nu=.");readMultipleRegisters Method (Int32, Int32, Array, Int32)

Parameters

Return Value

Reference

MbusMasterFunctionsreadMultipleRegisters Method (Int32, Int32, Array, Int32)