ALARM NOTIFYING DEVICE

PURPOSE:To unify function as a whole system by providing a monitoring means for the operation of a host computer in an operator station and fully utilizing alarm notifying function only when the host computer is abnormal. CONSTITUTION:A host computer monitoring means 21 provided on the side of an operator station 2 monitors whether the operation of a host computer 1 is normally executed or not. When the host computer 1 is normal, the function concerning alarm notification to be provided in the operator station 2 itself is limited so as to display high-grade alarm information processed on the side of the host computer 1 and only when the host computer 1 is abnormal, the alarm notifying function at the operator station 2 side is fully utilized. Thus, the unified and efficient alarm notification can be executed by using the function of the host computer 1 and the operator station 2 at a maximum as the whole system.