Positioning control is a key part of the control system of the stacker.The feedback of position data in the movement process directly affects the speed control and positioning accuracy control of the stacker.In this paper,the relative addressing and absolute addressing in positioning control are introduced.By analyzing the above two addressing methods,the speed regulation of frequency converter controlled by PLC,network communication mode,two-dimensional code sensor and absolute addressing of two-dimensional code positioning are explained,thus realizing the smooth speed regulation and accurate positioning of stacker positioning control and the safety protection of positioning control.
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