Siemens SIMATIC S5-90U System Manual page 155

S5-90U/S5-95U
Figure 7-3 shows how to set up a structured control program. It also illustrates the significance of
organization blocks.
Operating system
* Only for the S5-95U
Figure 7-3. Example of Organization Block Use
EWA 4NEB 812 6115-02b
OB21/OB22
OB1 PB1
FB2
Control program
Introduction to STEP 5
SB1*
FB61
7-9