8 Example — OPC Application for PROFIBUS-DP

Activity

4.

Select the following OPC items from the appropriate branches in the left-hand window and transfer these variables to the right-hand pane by clicking on the arrow button. The structure displayed and the variable names depend on the names specified in the STEP 7 program.

DP:[CP_5613]Slave005IB0,2

DP:[CP_5613]Slave005QB0,2

The items are added to the group after you confirm the dialog with “OK”.

8.5.3Displaying and Modifying Values of Variables

Executing Synchronous and Asynchronous Write Jobs

 

 

Activity

 

 

1.

The selected variables are displayed with the following additional information in the table of the

 

main window:

 

S The current value of the item

 

S

Access Rights

 

S Information about the integrity of the data

 

S

Time Stamp

 

 

2.

Now double-click on the “Value” cell of the outputbyte with the content {00} (first table row). A

 

dialog opens in which you can change the value of a variable.

 

 

 

Commissioning PC Stations - Manual and Quick Start

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Release 5/2005

C79000-G8976-C156-07

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Siemens C79000-G8976-C156-07 quick start Displaying and Modifying Values of Variables