7DI140.70 数字量输入模块 实现设备控制和监测

7DI140.70 数字量输入模块是一种用于连接外部的机械触点和电子数字式传感器的设备。例如，它可以连接二线式光电开关和接近开关等。这种模块的主要功能是将从现场传来的外部数字信号的点评转换为PLC内部信号电平。在数字量输入模块中，输入电路中一般设有RC滤波电路，以防止由于输入触点抖动或外部干扰脉冲引起的错误输入信号。此外，输入电流一般为数毫安。值得注意的是，数字量输入模块是PLC（可编程逻辑控制器）的重要组成部分，用于读取和接收来自外部设备或传感器的数字信号，然后将这些信号转换为PLC可以理解和处理的内部信号。这种转换使得PLC能够根据接收到的输入信号执行相应的控制任务。总的来说，7DI140.70 数字量输入模块在工业自动化系统中扮演着重要的角色，是实现设备控制和监测的关键组件之一。

7DI140.70

The 7DI140.70 digital input module is a device used to connect external mechanical contacts and electronic digital sensors. For example, it can connect two wire photoelectric switches and proximity switches, etc. The main function of this module is to convert the feedback of external digital signals transmitted from the site into the internal signal level of the PLC. In the digital input module, an RC filtering circuit is generally installed in the input circuit to prevent erroneous input signals caused by input contact jitter or external interference pulses. In addition, the input current is generally several milliamperes. It is worth noting that the digital input module is an important component of a PLC (Programmable Logic Controller), used to read and receive digital signals from external devices or sensors, and then convert these signals into internal signals that the PLC can understand and process. This conversion enables the PLC to perform corresponding control tasks based on the received input signals. Overall, the 7DI140.70 digital input module plays an important role in industrial automation systems and is one of the key components for achieving equipment control and monitoring.