Siemens SIMATIC S5 Manual page 220

13.1.2 Sample Program with Parameter Interchange
Sample application for case b):
If data (such as preset values for timers, counters or simple bit information) is to be interchanged
between 1P 265 and CPU, it must be linked into the 1P 265 user program as input parameters (CPU
to IP) or output parameters (IP to CPU).
Sample application:
Problem definition
On an assembly line, a strip of paper and a strip of cardboard are transported next to one another
on a conveyor belt in a continuous process. Prerequisite for high-quality postprocessing is the
synchronism of the two strips (the front edges of the strips must always be exactly aligned). Even
minor deviations require a transport adjustment.
Figure 13-4. Process: Synchronizing a Paper Feeder
EWA 4NEB 812 6130-02a
Synchronizing a paper feeder
Sample Applications and Programming Aids
13-7