Opc data Access Automation Specification

4.5.4.2

 

GetOPCItem  

Description 

Returns an OPCItem by ServerHandle returned by Add. Use the Item property to reference by 

index. 

Syntax 

GetOPCItem (ServerHandle As Long) As OPCItem 

 

Part Description 

ServerHandle 

ServerHandle is the OPCItem’s ServerHandle 

Use Item to reference by index. 

 

Example 

Dim AnOPCItem as OPCItem 

Set OPCItem = GetOPCItem(SomeItemServerHandle) 

4.5.4.3

 

AddItem 

Description 

Creates a new OPCItem object and adds it to the collection. The properties of this new OPCItem 

are determined by the current defaults in the OPCItems collection object. After an OPCItem is 

added, its properties can also be modified. 

Syntax 

AddItem (ItemID As String, ClientHandle As Long) 

 

Part Description 

ItemID 

Fully Qualified ItemID 

ClientHandle 

Client handle that will be returned with the 

 

Remarks 

This method is intended to provide the mechanism to add one item to the collection at a time.  For 

adding multiple items use the AddItems method, rather than repetitively calling AddItem for each 

object to be added. 

See Also 

Appendix A - OPC Automation Error Handling 

Appendix D- Notes On Automation Data Types 

Example 

Dim AnOPCItemID as String 

Dim AnClientHandle as Long 

AnOPCItemID = “N7:0” 

AnClientHandle = 1975 

AnOPCItemCollection.AddItem AnOPCItemID AnClientHandle 

66 

 

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OPC Data Access Automation Specification2.02