Technical data

Parameter Assignment for Data Blocks
12.1 Assigning Parameters to Technological Functions
Programming with STEP 7
278 Manual, 05/2010, A5E02789666-01
12.1 Assigning Parameters to Technological Functions
With the function "Parameter Assignment for Data Blocks" you can easily assign parameters to the
temperature controller blocks FB 58 "TCONT_CP" and FB 59 "TCONT_S" that are supplied in the
standard library and monitor them online.
To do so, proceed as follows:
1. In the SIMATIC Manager, open the STEP 7 standard library by selecting the menu command
File > Open > Libraries.
2. Select "PID Control Blocks" and then click on "Blocks". Here you will find the following function
blocks with the attribute "S7_techparam":
- FB 58 "TCONT_CP": Temperature controller for actuators with continuous or pulsing input
signals
- FB 59 "TCONT_S": Temperature controller for integral-type actuators
3. Copy the appropriate function block (FB 58 or FB 59) from the standard library into your
project.
4. Select the menu command Insert > S7 Block > Data Block to create an instance DB for the
FB that you selected.
5. In the SIMATIC Manager, double-click the instance DB to open it and start the function
"Parameter Assignment for Data Blocks".
Result: The instance DB is opened in the technological view. You can now easily assign
parameters to the instance DB and monitor it online.
6. Enter suitable controller values in the technological view. Any pertinent information, warnings
or errors will be displayed in the message window. To go to the location of a warning or error,
double-click on the corresponding warning or error.
Note
You can determine if blocks that have the system attribute "S7_techparam" by selecting a block in the
SIMATIC Manager, selecting the menu command Edit > Object Properties and then opening the
"Attributes" tab.