Siemens C79000-G8976-C156-07 quick start When to Use Symbols?, Creating and Using Symbol Files

15 Symbol File Configurator Too

When to Use Symbols?

The use of symbolic names is not mandatory. One exception to this is communication over PROFInet or communication with a SIMOTION partner. Here only symbols are used. You can either do without self-defined symbols or add symbols at a later point in time. If you do not require symbols skip to the next step.

Creating and Using Symbol Files

A symbolic name space is created either directly with NCM PC / STEP 7 or suing the “Symbol File Configurator” tool.

The Symbol File Configurator program creates a file containing the symbolic hierarchical name space and the assigned runtime names.

The file created by the Symbol File Configurator is entered in the “Configuration Console” program.

A symbol file must “fit in” with the configuration loaded on the PC station. To resolve a symbolic name, the symbol file uses the runtime name. For this reason, if you modify a connection name in the configuration, you must also adapt the symbol file to the change. Otherwise the OPC client will not be able to use the symbol.

196	Commissioning PC Stations - Manual and Quick Start
	Release 5/2005

C79000-G8976-C156-07