Siemens SIMATIC ET 200S Operating Instructions Manual page 343

Programming/flow diagrams
Below you will find a section from a STEP 7 STL program.
Take the following points into consideration:
● The configured start address of the inputs and outputs of the 2PULSE is 256. Configured
● The standard block FB 41 with DB 1 as the instance data block is used as the controller.
● The following example program does not provide for an explicit enable. The controller
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07
with a short control interface.
The differential component of the controller is deactivated. The block is therefore only
used as a PI controller. The FB 41 "CONT_C" is contained in the "Standard Library"
supplied with STEP 7 in the "PID Control Blocks" directory. Detailed information about
FB 41 is available in the System and Standard Functions
(http://support.automation.siemens.com/WW/view/en/1214574) reference manual.
starts operating immediately after the CPU start.
NOTICE
Therefore, take the required safety precautionary measures for your real system.
2PULSE
5.7 Application Examples
343