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ABSTRACT
PLC (Programmable Logical Controller) took one kind most important, the application situation most industries control microcomputer, it is convenient, operation simple in particular by its programming merit and so on redundant reliability, obtained the widespread application in the industrial production process. It applies the large scale integrated circuit, the miniature machine technology and the communication technology development achievement, gradually formed had the many kinds of merits and miniature, medium, large-scale, ultra large-scale and so on each kind of specification series product, applied to monitors between the computer from the control system many controls domain.
After humanity's more than centuries unremitting endeavors, the elevator already from the handle switch operation elevator, the push-button control elevator develops to the present group control elevator, has made the indelible contribution for the high level transportation. This function enable PLC to have the logic operation, counts with fixed time as well as the data feeds output function. Rises and falls in the process in the elevator, each logical switch control and PLC very good This article main discussion studies using Japanese OMRON Corporation's C series P molding machine carries on the control to the elevator fluctuation, forms the elevator control system
Keywords: 5-floor elevator, PLC, OMRON
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