【摘要】 本文介绍了某轧钢厂四辊轧机液压站PLC控制系统的构成与工作过程，讨论了PLC与工业控制计算机以及PLC与单片机之间信息交换的方法。更多还原

【Abstract】 In this paper, we are concerned with the system structure and the process of a PLC control system of the four-roller rolling mill hydraulic pressure station in a steel rolling mill. The methods of the communications between PLC and industrial computer, PLC and the single chip computer are outlined.更多还原