Siemens Commissioning PC Stations C79000-G8976-C156-07 - Manual (Page 83)

7 Example — OPC Application for Industrial Ethernet
83
Commissioning PC Stations - Manual and Quick Start
Release 5/2005
C79000-G8976-C156-07
Activity
In NetPro, you will find the network assignment of the SIMATIC 400 station and the PC station
displayed graphically.
7.3.2 Using Symbol Files
Introduction
Symbol tables are created during project engineering with STEP 7 on a central
engineering station in the form of STI files.
You can continue to use the symbol definitions made in the STEP 7 project
engineering when working with OPC. This is necessary if user applications (OPC
clients) are to access symbolic variables over the OPC server.
The symbol tables used are those of the CPUs for which S7 connections are
planned for the OPC server. Symbols that relate, for example, to data blocks
(DBs), bit memory, inputs, and outputs are taken into account.
Make the settings described in “Specifying the Use of Symbol Files” for the OPC
server on the central engineering station.