Opc data Access Automation Specification

4.1.5

 

OPCServer Methods 

4.1.5.1

 

GetOPCServers 

Description 

Returns the names (ProgID’s) of the registered OPC Servers. Use one of these ProgIDs in the 

Connect method. The names are returned as an array of strings. 

Syntax 

GetOPCServers(Optional Node As Variant) As Variant 

Part Description 

Node 

The Node name provides the mechanism to specify the remote node where you want the 

automation server to give you the list of all the registered OPC servers.    

Remarks 

Refer to the OPC Data Access Custom Interface Standard for specific registry requirements for 

the custom servers. 

Node is optional. The use of a node name makes use of DCOM to access another computer. 

Acceptable node names are UNC names (“Server”), or DNS names (“server.com”, 

“www.vendor.com”, or “180.151.19.75”). 

Example 

‘ getting the registered OPC Servers (the real OPC servers and adding them to a standard VB 

listbox). 

 

Dim AllOPCServers As Variant 

AllOPCServers = AnOPCServer.GetOPCServers 

22 

 

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OPC Data Access Automation Specification2.02 

For i = LBound(AllOPCServers) To UBound(AllOPCServers) 

    listbox.AddItem AllOPCServers(i) 

Next i