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5.8 Alarm model ToC Previous Next

5.8.4 Reset Method ToC Previous Next

The Reset Method is used reset a latched Alarm instance. It is only available on an instance of an AlarmConditionType that exposes the LatchedState. Normally, the NodeId of the Object instance is passed as the ObjectId to the Call Service. However, some Servers do not expose Condition instances in the AddressSpace. Therefore, Servers shall allow Clients to call the Reset Method by specifying ConditionId as the ObjectId. The Method cannot be called with an ObjectId of the AlarmConditionType Node.



This method has no arguments.

Method result codes in Table 44 (defined in Call service)

Table 44 – Reset result codes

Result Code Description
Bad_MethodInvalid The MethodId provided does not correspond to the ObjectId provided. See 10000-4 for the general description of this result code.
Bad_NodeIdInvalid    Used to indicate that the specified ObjectId is not valid or that the Method was called on the AlarmConditionType Node.See 10000-4 for the general description of this result code.
Bad_InvalidState The Alarm instance was not latched or is still active or still requires acknowledgement / confirmation. For an Alarm Instance to be reset it must have been in Alarm, and returned to normal and have been acknowledged/confirmed prior to being reset.

Table 45 specifies the AddressSpace representation for the Reset Method.

Table 45 – Reset Method AddressSpace definition

Attribute Value
BrowseName Reset
References NodeClass BrowseName DataType TypeDefinition ModellingRule
AlwaysGeneratesEvent ObjectType AuditConditionResetEventType Defined in 5.10.11    
A & C LatchedState          

If Auditing is supported, this Method shall generate an Event of AuditConditionResetEventType for all invocations of the Method.

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