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Chapter 15. Creating Custom Client Applications 243

To get started creating a configuration application with C or C++

[1] Import the type library by adding the following text to the beginning of your

source file:

#import “path\SI7Drv.tlb” no-namespace

where path is the directory you installed the driver. By default, this path is

C:\Dynamics.

[2] Use the following keyword to locate the GUIDs that are associated with

interfaces and COM objects. The ProgID for the server is Intellution.SI7Drv.

__uuidof()

[3] Call CoCreateInstance() or use a wrapper class to load the server and obtain a

pointer to the driver interface.

See Also

Feature: Configuring the Driver from Custom COM/OLE Automation Applications |

Creating a Custom Application Using Microsoft Visual Basic | Accessing SI7 Server

Data Using an OPC Client | Creating Custom Client Applications

Accessing SI7 Server Data Using an OPC Client

You can use any v1.0a or 2.0 OPC-compliant client to access data from your process

hardware through the SI7 OPC server using the SI7 driver. In order to access this

data, your client must use the OPC Custom Interface to communicate with the SI7

OPC server. The SI7 OPC server does not support the OPC Automation Interface.

Before you begin accessing OPC data from the SI7 OPC server, load your driver

configuration file. Once the file is loaded, you can use the following syntax for the

OPC ItemID:

devicename:address

(analog values)

devicename:address:bit

(digital values)

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