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Siemens S7 series PLC

Today, let’s talk about the projects that Longzhong is good at
PLC Programmable Logic Controller Programming

Siemens PLC has many series, most of which are used in industry, semiconductor, panel, electronic components, production process... and so on. In industries such as large-scale systems that need to process a lot of data, Siemens PLC has a considerable Good compatibility, also supports component expansion and system upgrade, it is a good choice of automatic control components.
Longzhong has been deeply involved in the field of automation for many years. In order to meet the different needs of many customers in automatic control, we have also researched PLCs of various brands, not only integrate the supply chain to make the delivery of PLC and other components ordered by Longzhong faster, but also accumulate many years of experience in solving PLC program modification needs for customers. It is due to the practice of PLC programs of many different brands, and Longzhong has PLC engineers who can write and edit. Among them, Longzhong is best at Siemens PLC, especially Siemens S7 series.

Today I want to introduce──Siemens series PLC S7
Siemens S7 series is a PLC model commonly used in the automatic control industry. Its advantages are small size, fast speed, standardization, network communication capabilities, stronger functions and higher reliability. S7 series PLC products can be divided into micro PLCs (such as S7-200), PLCs with small-scale performance requirements (such as S7-300) and PLCs with medium and high performance requirements (such as S7-400), which are convenient for users to control according to their needs. make a choice.


Longzhong Siemens S7-200 PLC programmable logic controller

Siemens S7-200 PLC:
It is an ultra-miniature PLC, which is applicable to all walks of life and automatic detection, monitoring and control in various occasions. The powerful function of S7-200 PLC makes it possible to realize complex control functions no matter it is run alone or connected into a network. Can provide 4 different basic models and 8 CPUs to choose from.
※ Gradually replaced by S7-1200


Longzhong Siemens S7-300 PLC programmable logic controller

Siemens S7-300 PLC:
It is a modular small PLC system that can meet the application of medium performance requirements. A wide range of individual modules can be combined to form systems with different requirements. Compared with the S7-200 PLC, the S7-300 PLC adopts a modular structure and has a high-speed (0.6~0.1μs) instruction operation speed; more complex arithmetic operations are effectively realized by using floating-point operations; a The software tool with standard user interface is convenient for users to assign parameters to all modules; the convenient man-machine interface service has been integrated in the S7-300 operating system, and the programming requirements for man-machine dialogue are greatly reduced.


Longzhong Siemens S7-400 PLC programmable logic controller

Siemens S7-400 PLC:
It is a programmable logic controller for medium and high-end performance range. It adopts a modular fanless design, which is reliable and durable. At the same time, CPUs of various levels (functions are gradually upgraded) can be selected, and it is equipped with a variety of general-purpose function templates, which enables users to combine different special systems according to their needs. When the scale of the control system is expanded or upgraded, as long as some templates are added appropriately, the system can be upgraded and fully meet the needs.


Longzhong Siemens SIEMENS S7-1200 PLC programmable logic controller

Siemens S7-1200 PLC:
On the basis of covering the original functions of S7-200, S7-1200 adds many new functions (which is also the main reason for the gradual decline of S7-200). The compact structure can save the space in the control box when assembling the control box. It has integrated IO and modular expansion options, and can communicate with third-party devices through the open Ethernet protocol. S7-1200 PLC can execute or integrate system equipment flexibly and efficiently, and can meet a wide range of automatic control application requirements.


Longzhong SIEMENS S7-1500 PLC programmable logic controller

Siemens S7-1500 PLC:
The CPU command processing time is extremely short, and a variety of input and output signal modules, public art modules, centralized and distributed communication modules are provided. Not only can it be networked with other automation components, but all functions of software and hardware can be used for efficient engineering design. It can also provide high flexibility for mid-to-high-end machinery and equipment, and exert excellent control performance.


Longzhong can give you the most professional PLC model selection suggestions according to your needs
Have any PLC program writing problems, PLC upgrades, PLC program modification needs
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