S7系列PLC电气控制设计与应用第7讲 S7-300与液位传感器的接线及硬件组态

摘要

During the production process, there are a large number of physical quantities such as pressure, temperature, velocity, rotational speed, pH value, viscosity, etc. In order to achieve the automatic control, these analog signals are required to deal with by the large and medium-sized PLC, and the number of analog signals can be much more than a small PLC. This article describes the wiring and hardware configuration between S7-300 and level sensor.%　　在生产过程中，存在大量的物理量，如压力、温度、速度、旋转速度、pH 值、粘度等。为了实现自动控制，这些模拟信号都需要被大中型PLC来处理，而且模拟量数量可以远远超过小型PLC的数量。本文介绍了S7-300与液位传感器的接线及硬件组态。