Rockwell Automation 1756-IH16ISOE ControlLogix Sequence of Events Module - Manual (Page 79)

Publication 1756-UM528A-EN-P - April 2004
Using The Sequence of Events Module in CST Per Point Mode 6-7
Using Enable CST Capture in CST Per Point Mode
Regardless of operating mode, Enable CST Capture causes the
Sequence of Events module to timestamp specific input transitions.
However, keep the following in mind when using this feature in CST
Per Point mode:
• Typically, Latch CST is enabled in CST Per Point mode. The
configuration of this feature (described on page 6-6) determines
whether the module timestamps only the first transition on an
input or every transition on an input.
• If Latch CST is enabled, the module timestamps only the initial
transitions (OFF to ON and ON to OFF) for each input.
• Whenever an input transition is timestamped as a valid
transition, the module sends updated input data for all inputs to
the controller immediately and at every subsequent RPI.
Use the Configuration tab in RSLogix 5000 to set Enable CST Capture,
as shown in the example below.
Click the Configuration tab.
• Click on the individual boxes for
each input point to enable CST
Capture for that point.
• Clear the individual boxes for
each input point to disable CST
Capture for that point.
You can also use these boxes to enable
or disable all points simultaneously.