Setting the Event configuration property to Change of state enables the Change of state extension. This extension detects whether a binary object property is equal to a configured alarm value or an enumerated property is equal to one of a configured set of alarm values. The Change of state extension can be applied to Binary_Input, Binary_Output, Binary_Value, Multistate_Input, Multistate_Output, and Multistate_Value objects.

Selecting the Change of state extension enables the property outlined in this table.

Property name


Property state values count

Sets the size of the Property state values array.

Property state values

Determines the alarm value(s) for the extension.

Time delay

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