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Process variables – Rockwell Automation Discrete Machine Performance Solution User Manual

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2. Check Breakdown Justification in the Configuration Work Area to enable the

Breakdown Justification collection. The table containing the list of the defined
justifications will be displayed.

3. Select the Automatic radio button as the Justification Type to collect the justification

code directly from the PLC. Enter the Trigger PLC Address (see “Manual
Justification” on page 44) and the
Code PLC Address which provides the value
representing the Breakdown Reason.

4. Click the Add button to append a new line to the Breakdown Reasons List. Click the

Insert button to create a new line in the Breakdown Reasons List before the selected
row. Click the Remove button to delete the selected line from the Breakdown Reasons
List. Up to 200 reasons can be defined for automatic selection.

5. Enter a description for every Breakdown Reason in the Breakdown Reasons List and a

numeric code value to match the code generated by the PLC in the Code PLC
Address
for that specific Breakdown Reason.

Process Variables

In some circumstances, process variables can have a significant impact on the
performance of a workcell. Temperature, pressure and viscosity could impact the speed
and the reliability of industrial assets. For this reason, the Discrete MPS Operator
Interface provides line operators with the plot of the real time trends of selected process
variables. Discrete MPS will log the selected process variables to the Discrete MPS
database. Reports are available to display the historical trend of the monitored process
variables.

To select the process variables to be monitored:

1. Select Process Variables in the Configuration Explorer to open the Process Variables

Configuration screen in the Configuration Work Area.

Discrete.book Page 46 Wednesday, December 8, 2004 2:22 PM