Rockwell Automation Logix5000 Logix5000 Controllers Quick Start - Manual (Page 138)

138 Publication 1756-QS001E-EN-P - October 2009
Chapter 7 Troubleshoot the Controller
2. Type a name for the trend and click .
View Scan Time
A Logix5000 controller provides two types of scan times. Each serves a different purpose.
View Task Scan Time
1. Right-click and choose Properties.
Scan Time Description
Elapsed time (task scan time) Time that has elapsed from the start of a task to the end of the task, in
milliseconds. The elapsed time of a task includes the time that the task is
interrupted to service communications or other tasks.
Execution time (program scan time) Time to execute the logic of a program (its main routine and any subroutines that
the main routine calls), in microseconds.The scan time of a program includes only
the execution time of the logic. It does not include any interrupts.