Abstract
With the rapid development of the national economy, based on PLC, the automatic control technology has been widely used in industrial production, the automatic control system consists of Siemens PLC S7-400 module, CPU414-3 as the main control unit, the tank farm and 6 PLC of five production Plant control by network, to achieve 10 different kinds of materials automatically and quantitatively are deliveries to five plants with 47 metering tank in 16 different positions. By the PC software Wincc can monitor by real-time and control metering tank of material of the each position, at the same time each position on the metering tank can automatically be stored in database named SQL Server 2005. We can call the date of database from Wincc in the form of electronic reports by real-time query, and can be exported at any time print. By this method, the company can greatly improve production efficiency, improve the stability and accuracy of each batch, reduce the impact of human factors on the batch safety and reduce the safety risk.
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