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Abstract
This article introduced the oil-fired boiler PLC automatic control system. This system basis substantial control procedure characteristic, uses the basic logic instruction programming, the scanning technique and the fuzzy control technology, changes boiler's fuel hold-up, causes the boiler energy conservation movement. This system to raises the fuel utilization ratio to have the tangible effect, what in this to everybody introduction is uses PLC to the oil-fired boiler automation control.
key word: PLC scanning technique fuzzy control