Opc data Access Automation Specification

4.2.1

 

Summary of Properties 

Organization Filter 

DataType 

AccessRights CurrentPosition 

Count 

4.2.2

 

Summary of Methods 

Item ShowBranches 

ShowLeafs 

MoveUp MoveToRoot 

MoveDown 

MoveTo GetItemID 

GetAccessPaths 

4.2.3

 

OPCBrowser Properties 

4.2.3.1

 

Organization  

Description 

(Read-only) Returns either OPCHierarchical or OPCFlat.  

Syntax 

Organization As Long 

Remarks 

If the organization is OPCFlat, then calling ShowBranches or any Move method has no effect. All 

names will be available after a single call to ShowLeafs. 

Example 

Dim TheOrganization As Long 

Set AnOPCServerBrowser = AnOPCServer.CreateBrowser 

TheOrganization = AnOPCServerBrowser.Organization 

4.2.3.2

 

Filter  

Description 

(Read/Write) The filter that applies to ShowBranches and ShowLeafs methods. This property 

defaults to “” (no filtering). Servers may use this filter to narrow the list of names. Servers are 

recommended to support wildcards such as “*”. 

Syntax 

Filter As String 

See Also 

Appendix B – Sample String Filter Syntax Function 

Example 

VB Syntax Example (getting the property): 

 

Dim TheFilter As String 

31 

 

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OPC Data Access Automation Specification2.02 

TheFilter = AnOPCServerBrowser.Filter 

VB Syntax Example (setting the property): 

Dim TheFilter As String 

AnOPCServerBrowser.Filter =  “FIC*”