88VU01B-E GJR2326500R1010 ABB

Identify user input and output devices

The user’s input and output devices are hardware devices other than the PLC itself that constitute the PLC control system,and are the basis for model selection and software design.Therefore,it is necessary to clarify the type and quantity of input devices(such as control buttons,travel switches,operating switches,detection elements,protection devices,sensors,etc.)and the number of output devices(such as signal lamps,contactors,relays and other executive elements)As well as loads driven by output devices(such as motors,solenoid valves,etc.).And classify and summarize.

确定用户输入设备和输出设备

用户的输入、输出设备是构成PLC控制系统中，除了作为控制器的PLC本身以外的硬件设备，是进行机型选择和软件设计的依据。因此，要明确输入设备的类型(如控制按钮、行程开关、操作开关、检测元件、保护器件、传感器等)和数量，输出设备的类型(如信号灯、接触器、继电器等执行元件)和数量，以及由输出设备驱动的负载(如电动机、电磁阀等)。并进行分类、汇总。