Siemens SIMATIC S5-90U System Manual page 260

Integrated Blocks and Their Functions
Calling the Controller in the Program:
OB13 STL
:
: JU FB
NAME : CONTROLLER 1
:
:
:
:
:
: BE
9-16
10
Description
Process controller
The controller's sampling interval
depends on the time base used to call
OB13 (set in DB1; see also Section
"Selecting the Sampling Interval").
S5-90U/S5-95U
EWA 4NEB 812 6115-02b