Programmable Logic Controller

The S7-1200 Programmable Logic Controller is flexible and powerful, capable of controlling a wide range of devices to meet your automation needs. Its compact structure, flexible configuration, and powerful instruction set make it the perfect solution for controlling various applications.

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Product Introduction

Introduction

The CPU integrates the following elements and more into a compact housing, creating a highly capable controller:
- Microprocessor
- Integrated power supply
- Input and output circuits
- Built-in PROFINET
- High-speed motion control I/O

After downloading the user program, the CPU contains the logic necessary to monitor the devices in the application. The CPU monitors inputs and changes outputs based on the logic of the user program, which may include Boolean logic, counting, timing, complex mathematical operations, motion control, and communication with other intelligent devices.

The CPU provides a PROFINET port for communication via a PROFINET network. Additional modules can be used for communication based on the following networks and protocols:
- PROFIBUS
- GPRS
- LTE
- WAN with integrated security features (firewall, VPN)
- RS485
- RS232
- RS422
- IEC 60870
- DNP3
- USS
- MODBUS

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FAQ

Q: What is PLC and how does it work?

A: A PROGRAMMABLE LOGIC CONTROLLER (PLC) is an industrial computer control system that continuously monitors the state of input devices and makes decisions based upon a custom program to control the state of output devices.

Q: How does a PLC connect to a computer?

A: PLC controller is linked with a PC computer through an RS-232 cable. One end of the cable is connected to a serial PC port (9-pin or 25-pin connector), while the other end is connected to an RS-232C connector on RS232 module of a CPM1A controller.

Q: What is the main purpose of a Programmable Logic Controller?

A: A PLC, or Programmable Logic Controller, is an industrial computer control system. Its main function is to monitor the state of input devices, such as sensors, and make decisions based on a custom program. The PLC then controls the state of output devices, like motors and actuators, to automate processes.

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