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S7-200 Micro PLCs
The S7-200 Micro PLC is the smallest member of the SIMATIC
S7 family of programmable controllers.
Each S7-200 central processing unit (CPU) model also includes
input and output points in the same housing as the CPU.
Inputs and outputs (I/O) are the system control points. Inputs
monitor field devices, such as switches and analog sensors.
Outputs control other devices, such as motors and control
valves.
The programming port is the connection to the programming
device and also provides a means for connecting the PLC to
other devices, such as display panels.
S7-200 Models There are six S7-200 CPU types (CPU 221, CPU 222, CPU 224,
CPU 224XP, CPU 224XPsi, and CPU 226) and two power
supply configurations for each type.
Model Description Power Supply Input Types Output Types Comm Ports
221 D C/D C/D C 20.4 -28 .8 V D C 6 x 24 VD C 4 x 24 V DC
1
22 1 A C/D C/R e la y
85 -264 V A C, 47 -63 Hz 6 x 24 V DC 4 x R elay
1
22 2 D C/D C/D C 20.4 -28 .8 V D C 8 x 24 VD C 6 x 24 V DC
1
22 2 A C/D C/R e la y
85 -264 V A C, 47 -63 Hz 8 x 24 V DC 6 x R elay
1
22 4 D C/D C/D C 20.4 -28 .8 V D C 14 x 24 V DC 10 x 24 V D C
1
22 4 A C/D C/R e la y
85 -264 V A C, 47 -63 Hz 14 x 24 V D C 10 x R e la y
1
224XP D C /D C /D C 20 .4-28.8 V D C
14 x 24 V D C, 2 x A n alog 10 x 24 V D C, 1 x A n alog
2
85 -264 V A C, 47 -63 Hz 14 x 24 V D C, 2 x A nalog 10 x R elay, 1 x A nalog
2
14 x 24 V D C, 2 x A n alog 10 x 24 V D C (current s in king),
2
22 6 D C/D C/D C 20.4 -28 .8 V D C 24 x 24 V DC 16 x 24D C
2
22 6 A C/D C/R e la y
85 -264 V A C, 47 -63 Hz 24 x 24 V D C 16 x R e la y
2
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