Development Of Liquid-Level Monitoring And Controlling Software For The Continuous Casting Machine

The main content of this paper is the development of liquid-level monitoring and controlling software for the Continuous Casting Machine, and the paper is combined with the development of liquid-level monitoring and controlling system for the Continuous Casting Machine of single way slab tundish in Pingshan, hebei.Firstly, the paper determines to use the eddy current detection technology and the stepping electromotion technology to realize the closed loop automatic control of mold molten steel level, on the basis of comparing mode and characteristic of each constituent part of the mold level control system. For the hardware design, it completes choice of each constituent part of mold level control system. For the software design of rock-bottom machine, it uses PTO port of PLC to control the stepping motor in order to keep the molten steel level steady, and adopts the mature PI control algorithm to realize closed loop automatic control of mold molten steel level.Because the system's structure and functions are simple and single, at the same time, Siemens Ltd.'s S7-200 PLC was later produced than configuration software WinCC. Monitoring and controlling software of PC is not easily developed by WinCC, and it is costly, relative to the simple system, it is not economical. Aimed to the status, I develop the monitoring and controlling software.The monitoring and controlling software of PC is developed using Visual C++ 6.0 tool of Microsoft and Prodave 5.5 package of Siemens Ltd. and the software is analyzed and designed by Object-Oriented method, so stability, agility and easy maintainability are strengthened and reusability of codes is boosted in the same time.