Since PLC is a device specially designed for industrial production environment, it can be directly used in industrial environment without special measures. However, if the industrial environment is too harsh, such as interference is particularly strong, it may cause the PLC to cause erroneous input signals, calculate erroneous results, produce erroneous output signals, and cause erroneous actions, which cannot guarantee the correct and safe operation of the control system. Therefore, in order to improve the reliability of the control system, it is very necessary to take corresponding effective anti-interference measures during the design.
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