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Chapter 5. About the SI7 I/O Driver 37

5. About the SI7 I/O Driver

The Intellution SI7 I/O version 7.x I/O driver provides the interface and

communications protocol between Siemens SIMATIC S7 hardware and your process

control software. Intellution version 7.x drivers incorporate the following attributes

to provide flexibility and ease-of-use:

• OLE Automation technology

• FIX/iFIX integration

• Event-driven architecture

• OLE for Process Control compliance

OLE Automation Technology

Version 7.x drivers incorporate OLE Automation technology and expose their

features to scripting tools and other applications. Because the drivers are OLE

Automation applications, you can:

• Create and manipulate objects exposed in the I/O Server from another

application.

• Create tools that access and manipulate driver objects. These tools can include

embedded macro languages or external programming tools.

The I/O driver consists of the following OLE components:

The I/O Server — The core executable program. The I/O Server maintains the

driver's channel, device, and datablock objects, performs all required functions

for communicating with the process hardware, and exposes its methods and

properties to other applications.

The I/O Driver Power Tool — A client application to the I/O Server with a

graphical user interface. The Power Tool accesses the I/O Server and lets you

view and modify channel, device, and datablock properties.

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Siemens SIMATIC NET Spécifications Page 47