3 displaying and modifying values of variables – Siemens Commissioning PC Stations C79000-G8976-C156-07 User Manual
Page 107
8
Example — OPC Application for PROFIBUS-DP
107
Commissioning PC Stations - Manual and Quick Start
Release 5/2005
C79000-G8976-C156-07
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”.
8.5.3
Displaying 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 output byte with the content {0|0} (first table row). A
dialog opens in which you can change the value of a variable.