Siemens SIMATIC ET 200S Operating Instructions Manual page 335

Programming/Flow Diagram
Below you will find a section from a STEP 7 STL program.
The configured start address of the inputs and outputs of the 2PULSE is 256. Configured
with a short control interface.
You can use this program section to start the packing process (5 pieces). To do this,
memory bit M30.0 must be set.
The HW enable then starts the pulse train.
STL
Block
L PEB256
T MB20
L 5
T PAW256
L 10
T PAB259
L 0
T MB10
U M30.0
= M10.0
L MB10
T PAB258
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07
Description
Read the feedback messages from Channel 0 of the 2PULSE
Write the number of pieces (5) to channel 0 of the 2PULSE
Write period factor 10 x 0.1 to Channel 0 of the 2PULSE
Generate control signal SW_ENABLE
Enable the packing process
Set SW_ENABLE=1
Write control signals to Channel 0 of the 2PULSE
2PULSE
5.7 Application Examples
335