Rockwell Automation FactoryTalk Metrics User Guide - Manual (Page 97)

Collecting Performance Data Chapter 3
The following event trigger types are available for system-generated
events and user-defined events that are not manual:
Use this event trigger type: To:
Monitored Bit Low to High Transition Monitor a bit value in the control system.
For this event trigger type, you need to specify a control system value as the trigger data
point.
The trigger data point does not have to be a bit but it must be numeric. Because this event
is triggered by a change in the value reported by the control system, only values that
report their data in an unscheduled manner may be selected as the trigger data point. The
values that are collected and interpreted in a binary fashion with a value of zero being Low
or Off and a non-zero value being High or On.
Use the trigger to track a value whose natural state is Low and you want to activate the
event when the value goes High and deactivate the event when the value returns to Low.
This event trigger type will accumulate the amount of time that the control system value is
in a High state.
Monitored Bit High to Low Transition Monitor a bit value in the control system.
For this event trigger type, you need to specify a control system value as the trigger data
point.
The trigger data point does not have to be a bit but it must be numeric. Because this event
is triggered by a change in the value reported by the control system only values that report
their data in an unscheduled manner may be selected as the trigger data point. The values
that are collected are interpreted in a binary fashion with a value of zero being Low or Off
and a non-zero value being High or On.
Use the trigger to track a value whose natural state is High and you want to activate the
event when the value goes Low and deactivate the event when the value returns to High.
This event trigger type will accumulate the amount of time that the control system value is
in a Low state.
Event Trigger Types for
System-generated and
User-defined Events
Rockwell Automation Publication PLTMT-UM001M-EN-P-June 2014 97