| PLC. network. And field bus technique speedily development changes traditional control structure of the automation territory, and the business information system that takes the integrated automation of netwok as the base takes shape gradually. Hence, the network control becomes entire industry control development tendency. The ControlLogix as the network system Joining industrial and upper equipment, which adopts well-developed producer/consumer's communication pattern, can supply well real-time communication and integrated equipment diagnose It also can be able to decrease the communication facility electric cable works, having advantages of low cost. High efficiency, high performance, and high dependability.By reform item of coal-repair system in coking plant of Jinan steel & iron group, electric control. PLC program control and computer supervision systems are designed in this article, the rear two parts are emphasized.This item adopts American A-B corporation RSLogix5550' s control platform and RSLogix5000 programming software which is used to complete the lower computer control program. So. It can work well through unload. Heaping. Supplying, distributing, transporting. Shattering and weighing processes according to requires.Industrial control computers of Siemens corporation are used in upper supervision system. RSView32 workman software of A-B corporation is used to configure. It can achieve that field data is recorded and supervised on time. Real-time dynamic simulation. Record. Inquiry. Warning. Block diagnosing and other functions are designed. This system is built with ControlNet & DH+ network one engineer station and one operation station. This system has been linked together. With the coking Plant backbone by means of Ethernet, bring into upper level industry PC and lower level PLC's preponderance respectively.Coal-repairing automation control system has been in use. The practice manifests this system operation is dependable, convenient and automatic level...
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