Exhaust system according to the PLC hot air
Abstract
Programmable reface controller brief name PLC is 1 kind in recent years extremely quick, apply an extremely extensive industrial control device.It is a kind of just for industrial environment application but design of numeral circulate of electronics system, it adopts the saving machine of programmable procedure and use to saving customer's instruction, pass numeral or imitate of importation/output completion assurance of logic in proper order, in fixed time, record number, operation and some functions of assurances to control the machine or production line of various type.It adopt programmable controller memory ,used for memory user’s instruction which through digital or analog’s input/ouput to finish definitely function to control various machines or produce process.Because PLC has outstanding function, also has perfect function competenee, plus flexibility better current use of computer’s Form electronic control equipment which core on microcomputer PLC control technology was used wide-ranging in world , become basic electricity control device in the Automation system PLC has extensive use in industry product of contemporary age and practice. BecausePLC has so many merits , now industry product mostly adopt PLC to bring about . In fact the self contol regular , but yell is random only use sequence control or logical control can’t satisfy the request of control . so this system adopt the control pattern which is of random logical ability . This control systembased on the request of practice adopt the PLC’s merits to finish the control of system This thesis has the system’s scheme of hardware main circuit diagram and software design.
Keywords: Programmable controller EPLAN WinCC flexible
