Product Overview; Introducing The S7-1200 Plc - Siemens SIMATIC S7 System Manual

Product overview

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Introducing the S7-1200 PLC

The S7-1200 programmable logic controller (PLC) provides the flexibility and power to
control a wide variety of devices in support of your automation needs. The compact design,
flexible configuration, and powerful instruction set combine to make the S7-1200 a perfect
solution for controlling a wide variety of applications.
The CPU combines a microprocessor, an integrated power supply, input circuits, and output
circuits in a compact housing to create a powerful PLC. After you download your program,
the CPU contains the logic required to monitor and control the devices in your application.
The CPU monitors the inputs and changes the outputs according to the logic of your user
program, which can include Boolean logic, counting, timing, complex math operations, and
communications with other intelligent devices.
Several security features help protect access to both the CPU and the control program:
● Every CPU provides password protection that allows you to configure access to the CPU
● You can use "know-how protection" to hide the code within a specific block. See the
The CPU provides a PROFINET port for communication over a PROFINET network.
Communication modules are available for communicating over RS485 or RS232 networks.
S7-1200 Programmable controller
System Manual, 11/2009, A5E02486680-02
functions.
"Programming concepts" (Page 89) chapter for details.
① Power connector
② Removable user wiring connectors
(behind the doors)
② Memory card slot under top door
③ Status LEDs for the on-board I/O
④ PROFINET connector (on the bottom
of the CPU)
The different CPU models provide a
diversity of features and capabilities that
help you create effective solutions for your
varied applications. For detailed
information about a specific CPU, see the
technical specifications (Page 279).
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