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Siemens PLC Family History

 Siemens PLC refers to both a company and a product line. The company Siemens PLC is a subsidiary of Siemens AG, a global technology and telecommunications corporation based in Germany. The product line Siemens PLC consists of programmable logic controllers (PLCs) that are used for industrial automation and control.



According to web search results123, here are some key points about Siemens PLC family history:


The Siemens family: The origins of Siemens AG can be traced back to 1847, when Werner von Siemens and Johann Georg Halske founded a telegraph company in Berlin. The company expanded into various fields such as electric power, railways, lighting, medical technology and communications. The Siemens family played a prominent role in the development of the company and its innovations. Some notable members include Ernst Werner von Siemens (the founder), Carl Wilhelm von Siemens (his brother who expanded the business internationally), Wilhelm von Siemens (his son who pioneered wireless telegraphy), Carl Friedrich von Siemens (his nephew who led the company after World War II) and Peter von Siemens (his great-grandson who served as chairman of the supervisory board until 2008).


The SIMATIC brand: The name SIMATIC stands for “SIemens MAtic”, which was derived from “SIemens stAtic” or “SIemens auTomatIC”. It was first used in 1958 for a series of electronic relays that replaced mechanical relays for industrial control. In 1960, SIMATIC became synonymous with PLCs when Siemens introduced the first modular PLC system called SIMATIC S3. Since then, SIMATIC has evolved into a comprehensive range of PLCs that cover different performance levels, applications and industries.


The SIMATIC generations: Over the years, Siemens has developed several generations of SIMATIC PLCs that have improved in functionality, performance and compatibility. Some of the most notable ones are:


SIMATIC S53: This was launched in 1979 as an upgrade to SIMATIC S3. It was one of the most popular and widely used PLC systems in the world until it was phased out in 2006. It had various models such as S5-90U, S5-95U, S5-100U, S5-115U, S5-135U and S5-155U that differed in memory size, processing speed and I/O capacity.

SIMATIC S73: This was launched in 1994 as a successor to SIMATIC S5. It introduced new features such as graphical programming language (LAD/FBD/STL/SCL), integrated diagnostics tools (STEP 7), distributed I/O modules (ET200) and industrial communication networks (Profibus/Profinet). It had various models such as S7-200/300/400/1200/1500 that differed in performance class, scalability and functionality.

SIMATIC TDC3: This was launched in 1998 as a high-end PLC system for complex applications that require high speed, precision and flexibility. It combined PLC functionality with PC technology such as Windows NT operating system, Intel Pentium processor and PCI bus interface. It had various models such as TDC MP1/MP2/MP4/MP6 that differed in processing power and memory size.


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