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Siemens

Siemens

Programmable controllers produced by Siemens (SIEMENS) Company of Germany are also widely used in our country, in metallurgy, chemical industry, printing lines and other fields. Siemens (SIEMENS) PLC products include LOGO, S7-200, S7-1200, S7-300, S7-400, S7-1500 and so on. Siemens S7 series PLC is small, fast, standardized, with network communication capability, stronger functions and high reliability.S7 series PLC products can be divided into micro PLC (such as S7-200), small-scale performance requirements of the PLC (such as S7-300) and medium- and high-performance requirements of the PLC (such as S7-400) and so on.

 

1. The first Siemens product to hit the market was the SIMATIC S3 in 1975, which was actually a binary controller with a simple operating interface. 2. In 1979, the S3 system was replaced by the SIMATIC S5, which made extensive use of microprocessors. 3、In the early 1980s, the S5 system was further upgraded - the U series PLCs, the more common models: S5-90U, 95U, 100U, 115U, 135U, 155U. 4, in April 1994, the S7 series was born, it has more internationalization, higher performance level, smaller installation space, better WINDOWS user interface and other advantages, its models: S7-200, 300, 400. 5、In 1996, in the process control field, Siemens also put forward the concept of PCS7 (Process Control System 7), which integrates its advantages of WINCC (WINDOWS-compatible operator interface), PROFIBUS (industrial fieldbus), COROS (supervisory control system), SINEC (Siemens Industrial Network) and control and regulation technology. 6, Siemens proposed TIA (Totally Integrated Automation) concept, that is, the fully integrated automation system, PLC technology in all automation fields. S3, S5 series PLC has been gradually withdrawn from the market, stop production, and the S7 series PLC development has become the control core of Siemens automation system, and the TDC system along the SIMADYN D technology kernel, is a further upgrade of the S7 series products, which is the most cutting-edge Siemens automation system, the strongest function of the programmable controller.

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