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

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Product overview

1.1

Introducing the S7-1200 PLC

The S7-1200 controller 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 and output circuits,
built-in PROFINET, high-speed motion control I/O, and on-board analog inputs in a compact
housing to create a powerful controller. 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.
The CPU provides a PROFINET port for communication over a PROFINET network.
Additional modules are available for communicating over PROFIBUS, GPRS, RS485 or
RS232 networks.
Several security features help protect access to both the CPU and the control program:
● Every CPU provides password protection (Page 190) that allows you to configure access
● You can use "know-how protection" (Page 193) to hide the code within a specific block.
● You can use copy protection (Page 195) to bind your program to a specific memory card
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
to the CPU functions.
or CPU.
Power connector
Memory card slot under top
door
Removable user wiring
connectors (behind the
doors)
Status LEDs for the on-
board I/O
PROFINET connector (on
the bottom of the CPU)
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