PLC CPU METHOD FOR FILTERING INPUT SIGNALS IN A CPU MODULE OF PLC SYSTEM

摘要

The present invention relates to an input signal filtering method of a PLC system. According to the present invention, by processing the filtering of the input signal applied from the digital input module through the software filtering process in the PLC CPU module, there is no need for a hardware configuration for filtering the input signal in the digital input module, thus miniaturization and high functionality of the PLC. Make it possible.