Rockwell Automation FactoryTalk Metrics User Guide - Manual (Page 59)

Collecting Performance Data Chapter 3
3. Click Edit.
The Expression Editor - Total Part Count Expression
dialog box appears.
TIP
The title of the dialog box reflects the part count type for which
you are performing the actions.
4. Create or modify the expression that you want to use.
If you use a FactoryTalk Transaction Manager expression with
this option, the only data point it can reference is the one
selected in the Data Point box.
To use a FTTM expression on a scheduled basis:
1. Check the Use a FTTM Expression to determine Part
Count value option.
2. Check the Evaluate this Expression on a scheduled basis
option.
3. Click Edit.
The Formula Parts wizard appears.
4. Use the wizard to define the formula. (page 60)
Configuring Part Count Using
a FTTM Expression On a
Scheduled Basis
Rockwell Automation Publication PLTMT-UM001M-EN-P-June 2014 59