SubscribeItem Method

Description

Subscribe to OPC item. Specify machine name, server class, item ID, and requested update rate. No state object is specified (suitable for simple scenarios only).

DISPID (Dispatch ID):

For more information, see SubscribeItem in .NET Reference.

Syntax

Visual Basic
Public Function SubscribeItem( _ ByVal machineName As String, _ ByVal serverClass As String, _ ByVal itemId As String, _ ByVal requestedUpdateRate As Long _ ) As Long

Visual Basic

Public Function SubscribeItem( _
   ByVal machineName As String, _
   ByVal serverClass As String, _
   ByVal itemId As String, _
   ByVal requestedUpdateRate As Long _
) As Long

Parameters

machineName
serverClass
itemId
requestedUpdateRate

Return Type

See SubscribeItem in .NET Reference.

Remarks

For remarks, see SubscribeItem in .NET Reference.

Example

For examples, see SubscribeItem in .NET Reference.