SIEMENS PLC Development History SIMATIC TrademarkThe development history of Siemens PLC SIMATIC trademark S7-200 is one of the products of Siemens Company in West Germany. Its registered trademark is SIMATIC.
1. The first product of Siemens was SIMATIC S3, which was put on the market in 1975. It is actually a binary controller with a simple operation interface.
2. In 1979, the S3 system was replaced by SIMATIC S5, and microprocessors were widely used in the system.
3. In the early 1980s, S5 system was further upgraded - U series PLC, more commonly used models: S5-90U, 95U, 100U, 115U, 135U, 155U.
4. In April 1994, the S7 series was born. It has more advantages such as internationalization, higher performance level, smaller installation space and better WINDOWS user interface. Its models are S7-200, 300, 400.
5. In 1996, in the field of process control, Siemens put forward the concept of PCS7 (process control system 7), which integrates WINCC (WINDOWS compatible operation interface), PROFIBUS (industrial field bus), COROS (monitoring system), SINEC (Siemens industrial network) and control and adjustment technology.
6. Now, Siemens has put forward the concept of TIA (Total Integrated Automation), that is, fully integrated automation system, which integrates PLC technology into all automation fields.
