Instruction Manual

3-3

IM WX1-04E

Index

Detailed Description of Functions

3.2 Detailed Description of Functions

OPC Server

GateOPC utilizes the OPC (OLE for process control) DA (data access) revision 2.0

server and COM/DCOM technology on the local machine or remote machine to form a

connection and acquire data.

Interfaces Used

The interfaces for the OPC server are defined as shown in the figures below.

OPC Server Object

IOPCCommon

IOPCServer

IOPCItemProperties

[IOPCServerPublicGroup]

[IOPCBrowseServerAddressSpace]

[IPersistFile]

IConnectionPointContainer

Standard

OPC Server

Object

IUnknown

OPC Group Object

IOPCItemMgt

IUnknown

IOPCGroupStateMgt

[IOPCPublicGroupeStateMgt]

IOPCSvncIO

IOPCASvncIO2

[IOPCASvncIO] old

IConnectionPointContainer

[I DataObject] old

Standard

OPC Group

Object