Siemens SIMATIC S7 System Manual page 20

Product overview
1.3 S7-200 SMART CPU
1.3 S7-200 SMART CPU
The CPU combines a microprocessor, an integrated power supply, input circuits, and output
circuits in a compact housing to create a powerful Micro PLC. After you have downloaded your
program, the CPU contains the logic required to monitor and control the input and output
devices in your application.
4
5
6
7
The CPU provides different models with a diversity of features and capabilities that help you
create effective solutions for your varied applications. The different models of CPUs are shown
below. For detailed information about a specific CPU, see the technical specifications (Page 800).
The S7-200 SMART CPU family includes fourteen CPU models, separated into two lines: the
Compact Line and the Standard Line. The first letter of the CPU designator indicates a line, either
Compact (C) or Standard (S). The second letter of the designator indicates AC power supply /
relay outputs (R) or DC power supply / DC transistor (T). The number in the designator indicates
the total onboard digital I/O count. The new compact models are designated by a lower case "s"
character (serial port only) following the I/O count.
Note
CPU CRs and CPU CR
S7-200 SMART CPU firmware release V2.4 and V2.5 do not apply to the CPU CRs and CPU CR
models.
20
2
3
9
8
①
LEDs for the I/O
②
Terminal connectors
③
Ethernet communication port
④
Clip for installation on a stand‐
ard (DIN) rail
⑤
Ethernet status LEDs
(under door): LINK, Rx/Tx
⑥
Status LEDs: RUN, STOP and
ERROR
⑦
RS485 Communication port
⑧
Optional signal board
(Standard models only)
1
⑨
Memory card reader (under
door)
(Standard models only)
System Manual, V2.7, 08/2022, A5E03822230-AK
S7-200 SMART