Gets / Sets the number items to read or write from the MODBUS device
[Visual Basic]
NotOverridable Public Property Length As
Integer _
[C#]
public
int Length {get; set;}
Property Value
Number of contiguous items to be read or written to the programmable
logic controller.
Implements
ITag.Length
Remarks
If Length is greater than 1, the data being read will be returned as
a System.Array
Maximum Array Lengths
2000 (READ/WRITE)- System.Boolean/ATOMIC.BOOL
250(READ) / 200(WRITE) - System.SByte
= ATOMIC.BYTE
250(READ) / 200(WRITE) - System.Byte
= ATOMIC.UBYTE
125(READ) / 100(WRITE) - System.Int16
= ATOMIC.INT
125(READ) / 100(WRITE) - System.UInt16
= ATOMIC.WORD
62(READ) / 50(WRITE) - System.Int32
= ATOMIC.DINT
62(READ) / 50(WRITE) - System.UInt32
= ATOMIC.DWORD
62(READ) / 50(WRITE) - System.Single
= ATOMIC.REAL
250(READ) / 200(WRITE) - System.String
= ATOMIC.STRING
Exceptions
| Exception Type |
Condition |
| IndexOutOfRangeException |
Thrown if Tag.Length exceeds the maximum array length. |
|
|
|
Example
VB
Imports MBLink
Dim MBDevice As New Controller("192.168.1.45")
Dim MyTag As New Tag("40001")
MyTag.Length = 25
MBDevice.ReadTag(MyTag)
C#
Using MBLink;
Controller MBDevice = new Controller("192.168.1.45");
Tag MyTag = new Tag("40001");
MyTag.Length = 25;
MBDevice.ReadTag(MyTag);
See Also
Tag Class | MBLink
Namespace