ABSTRACT:Boiler is one kind of motility equipment of heat energy and it has extensive use in the field of country economy, it is the heat equipment in common use best of all which can supply qualified steam for the requirement of steam quantity adapting to burthen.
The old control system mainly using—and—now can’t meet the high and complicated requirement for boiler, It is imperative under the situation to use computer for boiler control. And the remarkable PLC used currently by industry process control area is the most reliable.
The control system has been carried into execution by the use of programmable logic controller having developed the method of data acquisition by using PLC digital input and analogy input, also use the method of front feedback control and serial connecting control, so it can guarantee the safety and steadiness of the system.The interface which is used by the system was made by the MCGS software.
So the technique for the completely control by computer to the process of the unite based on PLC which has improved the automation level of the enterprise greatly.
Key words: PLC; Boiler; Data acquisition;