| With the rapid development of automation technology, we have more kinds of advance device and technology to choose in building the modern factory. These choices improve the control level and effect. The modern automation technology is made up of those device which are connected to the computer include the PLC,tradition equipment,intelligent instrument,intelligent implement machine,bus system,operator station and engineer station etc. This is the distribute control system which we often refer to. It has multi-classes architecture and each class has itself tasks. The foundation class controls the field equipment and the second class configure the foundation class's parameter, therefore, the second class can include all kind of algorithms and have more intelligence.This paper study on the control system of LiuGang Group's first converter removes dust and gas callback system. It has many equipment to control, furthermore, those equipment must tightly cooperate. They can differentiate to thermal instrument control and electric control. In the control process, we must cooperate with the other major professional and find the special require, and then, we can choose the appropriate control strategy to form a organic integrated control system.Siemens PLC system is a flexible control platform. Its independence part are connected by Profibus, therefore, we can use the remote I/O as same as the local. The advance diagnosis technology ensures the debugging process and save the checking time. The function block for special device in the step7 reduces the workload in programming. All of above embody the advantage of the message and control integration.The field debugging is the deepening of the cooperation of the theory and the practice. Through solving the field problem, I have more deeply understanding the whole control system. Various unexpected factor may appear, and they may influence the whole or partial system to work. Accordingly, after we are ready for debugging, we... |
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