SIEMENS SIMATIC S7-1200 PLC can fully meet the requirement of small automation system.In the process of research and development, the seamless integration of the system, controller, man-machine interface and the software is fully considered. SIMATIC s7-1200 series the advent of marks Siemens on the basis of the original series products expand the products in the territory, on behalf of the future small programming controller of the direction of development, Siemens will also pay the pioneering and innovative, leading automation tide SIMATIC s7-1200 has integrated PROFINET interface, powerful integrated process function and flexible can be extended, for a variety of process task provides a simple communication and effective solutions, especially to meet a variety of applications in a completely different automation needs.

Installation is simple and convenient
All SIMATIC s7-1200 hardware has built-in installation folder and can be easily installed in a standard 35 mm DIN guide. The built-in mounting clips can be engaged in an extended position to provide mounting holes for the need to carry out the installation of the back board. SIMATIC S7-1200 hardware can be vertical or horizontal installation. These properties for the user installation PLC provides maximum flexibility and also made SIMATIC s7-1200 become the ideal choice for many applications.
Detachable terminal
All SIMATIC S7-1200 hardware is equipped with a removable terminal board. Therefore, only one connection can be carried out, thereby saving valuable time during the start-up and debugging phase of the project. In addition, it also simplifies the process of replacing the hardware components. 
Compact structure
All SIMATIC s7-1200 hardware in the design have sought to compact, to save the space occupation of installed in the control cabinet. For example, CPU 1214C only the width of 110 mm, CPU 1212C and CPU 1211C width is only 90 mm. Communication module and signal module volume is also very small, making the compact modular system greatly save space, resulting in the installation process for you to provide maximum efficiency and flexibility.
Communication module
SIMATIC S7-1200 CPU can add up to three communication module. RS485 RS232 and communication module for serial communication to provide point-to-point connection. The configuration and programming of the communication with the extensions or library function, the USS driven protocol, Modbus RTU master and slave protocol. They are included in the SIMATIC step 7 basic engineering configuration of the system. 
storage
Provides up to 50 KB shared working memory for user instructions and data. At the same time also provides integrated load memory up to 2 MB and electric off 2 KB keep memory.
SIMATIC memory card optional, through different settings available for programming card, transfer card and card hardware update three functions. Through it can easily transfer the program up to a CPU. The card can also be used to store all kinds of files or update the firmware of the controller system. 
Integrated PROFINET interface
Integrated PROFINET interface for programming, HMI communication and PLC communication between. In addition, it also supports communication with third party devices through an open Ethernet protocol. With a with auto mdi-x (auto-cross-over) function RJ45 connector, provide the data transmission rate of the 10/100Mbit/s, supports the following protocols: TCP / IP native, ISO on TCP and S7 communication of the interface.
The number of connections maximum for 15 connections, including:
3 - HMI and connection for CPU communication
- 1 connections for programming devices (PG) and CPU communication
- 8 connection for open IE, ISO on TCP and TCP communications programming, using T-block instruction to realize the can be used for communication between the s7-1200, s7-1200 and S7-300 / 400 communication
- 3 S7 connected for communication server connection, can be achieved with S7-200, S7-300/400 Ethernet S7 communication 
Integrated Ethernet interface
For integrated Ethernet interface s7-1200 and human-machine interface connection, connection of the CPU and CPU, through the Ethernet protocol for open communication with third party devices can use the step 7 T-send/ T-receive command to configure the communication. In the engineering, the man-machine interface operation panel and the controller can be very simple network operation.
Integrated Ethernet interface - with anti interference and cross adaptation
- by compact switch CSM1277 can make the system composed of linear, tree and star network topology 
Integrated process
High speed input
SIMATIC S7-1200 controller with up to 6 high-speed counter. The 3 input for 100 kHz, 3 input is 30 kHz, used to count and measure.
High speed output
SIMATIC s7-1200 controller integrates high-speed pulse output with two 100 kHz, used for the stepper motor or servo drive control of speed and position. (using PLCopen control instructions) the two output can output PWM signal to control the duty ratio of the motor speed, the valve position or the heating element.
The speed and position control PLCopen motion control command
PLCopen is an international movement control standard
- support absolute, relative motion and change the speed of online sports
- finding the origin and control of climbing
- for simple start stepping or servo motor and trial operation
- Online Detection
PID control
SIMATIC s7-1200 controller provides up to 16 with automatic adjustment function of the PID control loop, for a simple closed loop process control. 
Extensible flexible design
Signal board
A piece of the signal plate can be connected to all of the CPU, thus you can by a controller to add digital or analog input / output channel to tailored CPU, without the need to change the volume. The modular design of the S7-1200 SIMATIC controller allows you to accurately design the controller system according to the actual application requirements.
Signal module
8 up to signal module connected to expand the capacity of the highest CPU, to support more digital and analog input / output signal connection. 
communication
SIMATIC S7-1200 equipped with different communication mechanisms:
- integrated PROFINET interface
- point-to-point connection through the communication module

Common model as below:

S7-1200 series host model:
Type CPU:6ES7211-1BE31-0XB0 1211C (relay); 6ES7211-1AE31-0XB0 (transistor)
6ES7211-1HE31-0XB0 (relay)
Type CPU:6ES7212-1BE31-0XB0 1212C (relay); 6ES7212-1AE31-0XB0 (transistor)
6ES7212-1HE31-0XB0 (relay)
Type CPU:6ES7214-1BG31-0XB0 1214C (relay); 6ES7214-1AG31-0XB0 (transistor)
6ES7214-1HG31-0XB0 (relay)
Type CPU:6ES7215-1BG31-0XB0 1215C (relay); 6ES7215-1AG31-0XB0 (transistor)
6ES7215-1HG31-0XB0 (relay)
Standard:
1 Ethernet port 2 analog input (voltage type)
4 axis 100kHz pulse output (transistor type)
1215C type with 2 analog output (voltage type)
S7-1200 series can be used to extend the model:
Digital quantity:
6ES7221-1BF30-0XB0 (8 point input); 6ES7221-1BH30-0XB0 (16 point transmission)
6ES7222-1XF30-0XB0 (8 switch relay); 6ES7222-1HF30-0XB0 (8 point relay output)
6ES7222-1BF30-0XB0 (8 point of the transistor output); 6ES7222-1HH30-0XB0 (16 point relay output)
6ES7222-1BH30-0XB0 (16 point of the transistor output); 6ES7223-1PH30-0XB0 (8 point input /8 point relay output)
6ES7223-1BH30-0XB0 (8 point /8 point transistor output):
6ES7223-1PL30-0XB0 (16 point input /16 point relay output)
6ES7223-1BL30-0XB0 (16 point /16 point transistor output)
6ES7223-1QH30-0XB0 (8 point input (AC) /8 point relay output)
Analog quantity:
6ES7231-4HD30-0XB0 (4 analog input); 6ES7231-4HF30-0XB0 (8 analog input)
6ES7232-4HB30-0XB0 (2 analog output); 6ES7232-4HD30-0XB0 (4 analog output)
6ES7234-4HE30-0XB0 (4 channel analog input /2 analog output)
6ES7231-5ND30-0XB0 (4 road heat resistance temperature input); 6ES7231-5PD30-0XB0 (4 way thermal resistance temperature input)
6ES7231-5QD30-0XB0 (4 thermocouple temperature input); 6ES7231-5PF30-0XB0 (8 path thermal resistance temperature input)
6ES7231-5QF30-0XB0 (8 thermocouple temperature input)
Signal board digital quantity:
6ES7221-3BD30-0XB0 (200kHz DC, 4 point input); 6ES7221-3AD30-0XB0 (200kHz DC, 4 point input)
6ES7223-0BD30-0XB0 (2 point input /2 point output)
6ES7222-1BD30-0XB0 (200kHz DC, 4 point output, 0.1A)
6ES7222-1AD30-0XB0 (200kHz DC, 4 point output, 0.1A)
6ES7223-3BD30-0XB0 (2 point 24V input /2 point 24V output, 0.1A)
6ES7223-3AD30-0XB0 (2 point 5V input /2 point 5V output, 0.1A)
Signal board analog:
6ES7231-4HA30-0XB0 (1 analog input); 6ES7232-4HA30-0XB0 (1 analog output)
6ES7231-5PA30-0XB0 (1 road heat resistance temperature input); 6ES7231-5QA30-0XB0 (1 thermocouple temperature input)
Communication board:
6ES7241-1CH31-0XB0 (RS485/422); 6ES7241-1AH30-0XB0 (RS232)
6ES7241-1CH30-1XB0 (RS485)
Communication module:
6GK7243-5DX30-0XE0 (Profibus-DP master module)
6GK7242-5DX30-0XE0 (Profibus-DP slave module); 6GK7242-7KX30-0XE0 (GPRS module)
TS module:
6ES7972-0EB00-0XA0 (Adapter IE Basic TS); 6ES7972-0MM00-0XA0 (Module Modem); (TS)
6ES7972-0MD00-0XA0 (Module ISDN TS); 6ES7972-0MS00-0XA0 (Module RS232); (TS)
Simulator:
1XH30 0XA0 6ES7274 (1214C simulator (14 bits)
1XF30 0XA0 6ES7274 (1211C/1212C simulator (8 bits)
Memory card：
6ES7954-8LB01-0AA0 (MC 2MB SIMATIC); 6ES7954-8LE01-0AA0 (MC 12MB); (SIMATIC)
6ES7954-8LF01-0AA0 (MC 24MB SIMATIC)
other：
6EP1332-1SH71 (PM 1207, DC24V, 2.5 CPU power supply)
6ES7290-6AA30-0XA0 (I/O extension cable, 2 m); 6ES7297-0AX30-0XA0 (S7-1200 battery board)
6ES7298-2DS23-0XA0 (V60 SIMATIC/SINAMICS wiring cable)
6GK7277-1AA10-0AA0 (CSM 1277 Ethernet switch, 4 port)