Rockwell Automation FactoryTalk Metrics User Guide - Manual (Page 77)

Collecting Performance Data Chapter 3
Select this option if you want to determine the availability of
the activity area based on the results of a formula.
This option specifies a formula that is constructed from one or
more unscheduled numeric or binary data points, and when
the result of that formula has a non-zero or true value, it
indicates that the activity area is Monitored Available.
For example, if you base the monitored availability on the
running state of the upstream and downstream units, you can
determine that the activity area is actually available because it
is not waiting for parts and is not blocked.
Proceed as follows:
1. Click Edit.
The Formula Parts wizard appears.
2. Use the wizard to define the formula. (page 60)
Click Apply.
The Monitored Availability configuration results in creating several
system events contained in an event category called Available (in
addition to those created by the Scheduled Availability
configuration).
To view the events, in the left pane of the Configure Performance
Parameters dialog box, under Custom, click Events.
For more information, see "Viewing the Performance Parameter
Events for an Activity Area (page 81)".
The data from the events is logged to the database and used to
calculate OEE and other metrics. The events include (depending on
selected options):
• Activity Area Available – Formula
• Activity Area Available – Point
Rockwell Automation Publication PLTMT-UM001M-EN-P-June 2014 77