3HNA000512-001 modular

3HNA000512-001 modular

Shanxi Runsheng Import and Export Co., Ltd. is located in Taiyuan, Shanxi Province, and its business scope covers East China, South China, North China, Southwest and other parts of the country. Main products include DCS control system spare parts, PLC system spare parts and robot system spare parts. Superior brands: Allen Bradley, BentlyNevada, ABB, Emerson Overstation, Honeywell DCS, Rockwell ICS Triplex, FOXBORO, Schneider PLC, GE Fanuc, Motorola, HIMA, Prosoft and other imported industrial spare parts. The company always adheres to the business philosophy of “integrity and win-win”, Serve every new and old customer with the attitude of “honest service, customer first”. Relying on strong and competitive products, huge inventory, excellent quality, fast delivery, pre-sales consultation and service, we continue to provide products for our customers. Our main products are used in electronics, metallurgy, chemicals, power plants, steel mills, rubber, cement, mechanical equipment, construction and other industries.

The definition of plc plc is called the programmable controller. It is a kind of special electronic computer for digital operation. It is based on the mature and effective relay control concept and design idea, and has gradually formed various series of products with characteristics by using the constantly developing new technology and new electronic devices. It is a device that stores logic operation, sequence control, timing and counting, arithmetic operation and other control programs into memory in the form of a series of instructions, and then controls production equipment and production process through analog, digital and other input and output components according to the stored control content.

The development history of plc in 1969, dec company developed the first plc in the world according to the requirements of gm (general motors company of america) and successfully applied it in gm company. After that, the company commercialized plc. Plc is specially designed to compete with relay products and gradually replace the traditional relay. As an industrial computer, plc has experienced the following development.

1969-1972 is the first stage, which is the initial stage of plc. In this stage, the plc of each manufacturer is very different, there is no unified hardware and software standard, the function is simple, and the specificity is strong. The hardware mainly consists of separated components, which are large in size, poor in performance, and low in reliability.

1972 is the second stage. In this stage, plc gradually evolved into a special industrial computer, which greatly improved the reliability and reduced the cost. The process oriented ladder diagram and statement table language came out, and the system gradually transited to standardization. All these laid the foundation for the popularization of plc.

Since 1981, iec has officially published the standard of plc. Ladder diagram, statement table and sfc language have been mature. At the same time, there is an interface with high-level programming language. Its storage capacity, operation speed and analog processing function have been greatly enhanced. Now large and medium-sized plc has the classical pid algorithm, slope function, adaptive algorithm, fuzzy control algorithm and other algorithms that were “unique” to previous dcs.