In order to meet the various needs of industrial automation control systems, in our contemporary needs, PLC manufacturers have developed many new devices and modules in recent years, such as intelligent I/O modules, temperature control modules, and special detection of external PLC Faulty dedicated intelligent modules, etc. The development and application of these modules not only realize enhanced functions, expand the application range of PLC, but also improve system reliability. <br>4. The diversification and standardization <br>of programming languages and programming tools. The coexistence, development and complementarity of multiple programming languages are the further development trend of PLC software. PLC manufacturers are gradually moving closer to MAP (Manufacturing Automation Protocol) while changing hardware and programming tools more frequently, more abundantly, and improving functions, which will make the basic components of PLC, including input and output modules, programming languages, communication protocols, and programming tools Technical standardization and standardization in other aspects.
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