5. TEMPERATURE CONTROL AND MONITORING SYSTEM BASED ON PLC

In many fields of scientific research and production practice, the temperature control occupies a very important position, especially with a pivotal role in the industrial and agricultural production. With the development of electronic and computer technology, PLC from the original amount of simple logic control, and gradually have the function of a computer control system, since the computing power, anti -jamming capability, response speed, communications networking cap ability, flexibility, and maintainability many advantages aspects, PLC has been extensive use of temperature control system, the author designed temperature control system based on PLC. In the industry control equipment, temperature control absolutely deci des product quality. introduces an industry control computer that interfaces with a PLC by Ethernet and a temperature control system based on the EJ1 temperature control module manufactured by the OMRON business. And the program me on the VC++ flat creates a userfriendly interface for communication between humans and machines, sets the temperature of each temperature, and implements real-time monitoring.