Siemens SIMATIC S7-200

Introducing the S7-200 Micro PLC
1-6
S7-200 Programmable Controller System Manual
A5E00066097-02
Figure 1-3 shows the S7-200 CPU.
Top terminal door
Power terminal
Output terminal
Front access door
Mode switch
Potentiometer
Expansion I/O connection
Bottom terminal door
Input terminal
Sensor power
Status LEDs
Cartridge
Communication
Port
Figure 1-3 S7-200 CPU
Expansion Modules
The S7-200 CPU provides a certain number of local I/O. Adding an expansion
module provides additional input or output points (see Figure 1-4).
Figure 1-4 CPU with an Expansion Module