The S7-1200 series PLC has the following product features:
Hardware design
Compact modularity: It adopts a compact modular design and is small in size. For example, the width of CPU1214C is only 110mm, and the width of CPU1212C and CPU1211C is only 90mm, which saves space on the control panel. CPU modules, signal boards and signal modules can be flexibly selected according to needs for easy expansion and system configuration.
Rich integrated functions: The CPU body integrates digital I/O, analog I/O and motion control I/O, etc., which reduces additional hardware expansion and reduces PLC installation space and cost. Some CPUs also integrate Profinet interfaces for programming, HMI and PLC-to-PLC communication, support multiple Ethernet protocols, and data transmission rates can reach 10/100 Mbit/s.
Performance
Moderate processing power: It can meet the needs of small and medium-sized automation control systems, and can complete general logic control, data processing and simple motion control tasks well, with high operating efficiency and stability.
High-speed input and output: It integrates high-speed output, which can be used as pulse train output or output of tuned pulse width, with an output frequency of up to 100 kHz, which can be used to control the open-loop speed and position of stepper motors and servo drives. It also has a high-speed counter to feedback the pulse train output.
Programming and configuration
Efficient programming software: It uses the fully integrated engineering configuration software SIMATIC STEP 7 Basic, which is intuitive, easy to learn and easy to use, and the design concept is future-oriented. It provides intelligent functions such as intuitive editors, drag-and-drop functions and “IntelliSense” tools to improve engineering configuration efficiency.
Diverse programming languages: It supports multiple programming languages, such as ladder diagrams, statement tables, function block diagrams, etc. Engineers can choose according to their own habits and project requirements, reducing programming difficulty and learning costs.
Flexible and convenient configuration: In engineering configuration, hardware configuration and network configuration can be easily performed, and the configuration and connection of the device can be completed by simple drag-and-drop operations. Supports online monitoring and diagnostic functions, which can monitor the operating status, variable values and communication status of the PLC in real time, and quickly locate and solve faults.
Communication capability
Multiple communication interfaces: The integrated Profinet interface supports multiple Ethernet protocols, such as TCP/IP native, ISO on TCP and S7 communication, which can realize communication with HMI, other PLCs, intelligent devices, etc. In addition, it can also support communication protocols such as Profibus, Modbus RTU and Modbus TCP through extended communication modules, which is convenient for communication and integration with third-party devices.
Powerful communication function: Supports intelligent IO device (I-Device) function, which can realize distributed I/O applications with master-slave structure. With an integrated Web server, users can access system and process information through Web pages for remote monitoring and diagnosis.
Control Function
Motion Control Function: Supports open-loop speed and position control of stepper motors and servo drives. Using axis technology objects and internationally recognized PLCopen motion function blocks, motion control functions such as absolute movement, relative movement, and speed movement can be easily configured. A drive commissioning control panel is also included to simplify the startup and commissioning of stepper motors and servo drives.
Process Control Function: Supports up to 16 PID control loops for simple process control applications. These control loops can be easily configured with the help of PID controller technology objects and the supporting editor provided in the engineering configuration software. It also supports PID automatic adjustment function, which can automatically calculate the best adjustment value. It also comes with a PID commissioning control panel to simplify the loop adjustment process.
Safety and Reliability
Safety Integration: With password protection function, it can prevent unauthorized modification of code or process quantities and improve the safety of operation. At the same time, through proprietary technology protection, unauthorized third parties cannot open the program and algorithm.
High reliability: Using high-quality electronic components and advanced manufacturing processes, it has good anti-interference ability and stability, and can operate stably for a long time in harsh industrial environments. Supports hot-swap function, and the module can be replaced and maintained without affecting system operation.
