Structure of a S7-200 (CPU 221)
Output
Power
terminals
Supply
Mode selector switch
STOP, TERM, RUN
Port for expansion
modules (not with
CPU 221)
Analog
potentiometer
Programming
Input
Output for sensors
interface port (PPI)
Terminals
DC 24 V /180 mA
Basic
1st Exercise
More
Hardware
Software
6
Appendix
Settings
Programm
Exercises