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Editor to share with you what the PLC expansion analog input module is, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

The PLC analog input module is an intelligent module that collects analog quantities such as voltage, current, thermal resistance, thermocouple or temperature, and then transmits them to the computer through the bus. In fact, it is a device that collects the analog signal from the remote field to the computer. the analog quantity represents the arbitrary value that changes continuously in a certain range, indicating that the digital quantity is in opposition to the digital value. in general, analog quantities are used for acquisition, as well as parameters such as voltage, current or frequency of things.

DCS, which is the so-called distributed control system, or distributed system in some data, is a new type of computer control system relative to the centralized control system. It is developed and evolved on the basis of the centralized control system. In the aspect of system function, there is little difference between DCS and centralized control system, but the realization method of system function is completely different.

Analog control technology has been widely used in actual production, and has become an important part of the automation industry and machinery and equipment. The analog signal is an important source in the usual signal acquisition, which is different from our ordinary IO control, just like some switch input modules, and these signals are either 0 or 1. If it is for the analog signal, it is not a simple 0 or 1, it is a continuously changing value. Such as temperature signal, flow signal, displacement signal and so on, these are not simply on or off, but these are continuous changes.

Well, at this time, if there is no way to express the temperature signal collected from the outside only through 0 or 1, for example, the temperature range is 10 degrees below zero or 30 degrees above zero. This temperature signal cannot be expressed by the state of 0 or 1, so such a digital signal needs to be expressed by the corresponding analog signal. And this form of signal acquisition can not be collected through anything. That is to say, we need to collect the analog signals through some corresponding analog modules. if we want to collect the analog signals, we should use the analog input module to control the external equipment and control other devices to act, and if it is to control the frequency of the frequency converter, we need to use the analog output module.

Automation and information systems in various industries have the application of PLC analog input module. In practice, we can directly see the application of analog module. Analog input module collects analog signals. If it collects external pressure sensors, the analog signals collected by pressure sensors are collected to the interior through the module, and then make corresponding processing. The analog output module outputs some signals through this module and then goes to the equipment outside Confucius, just like the frequency converter, the frequency converter needs to collect 0-10V signals, corresponding to the 0-50HZ frequency of the frequency converter, then it needs to be controlled by such a module, which is the application method of analog input and output.

These are all the contents of the article "what is the PLC extended Analog input Module?" Thank you for your reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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