Setting the Event configuration property to Command failure enables the Command failure extension. This extension detects whether the object's present value is different from the feedback value for a defined time period. For example, the Command failure extension can verify that a process change has occurred after writing a property. The Command failure extension can be applied to Binary_Output and Multistate_Output objects.

Selecting the Command failure extension enables the properties outlined in this table.

Property name

Description

Object name reference

References the object that provides the feedback value.

Feedback property identifier

A read-only property that specifies the feedback property for the event enrollment object instance. By default, the Feedback property identifier property will be displayed numerically.

Feedback value reference

A read-only property that specifies the device object property reference of the feedback value.

Feedback value

A read-only property that provides the actual feedback value.

Time delay

Specifies the amount of time that must pass between detecting offnormal conditions and sending an event notification. Enter a time in seconds.