Rockwell Automation GMLC Reference Manual - Manual (Page 89)

Publication GMLC-5.2 - November 1999
52 Configuring Control Options
3. In the I/O Configuration area, make entries in the following fields:
Field Description
Update Rate I/O image file updates to and from the SLC are
executed from the servo interrupt routine, and
are independent of the SLC I/O scan. The
higher the setting, the greater the impact on
CPU utilization.
Select one of the I/O update rates:
Slow: Updates the complete I/O Image file
every four servo loops.
Medium: Updates the complete I/O Image file
every two servo loops.
Fast: Updates the complete I/O Image file
every servo interrupt.