supporting Sequence of Events

Publication 1732E-UM002A-EN-P - March 2010
58 Using the Module
Use the Configuration tab in RSLogix 5000 to enable Timestamp Latching, as
shown in the example.
Using Timestamp Capture
Timestamp Capture causes the module to timestamp specific input transitions
(Off to On and On to Off). However, keep the following in mind when using
this feature:
Typically, Timestamp Latching is enabled. The configuration of this feature
(described on page 57
) determines whether the module timestamps only the
first transition on an input until the timestamp is acknowledged, or every
transition on an input while overwriting timestamps that have not yet been
acknowledged.
If Timestamp Capture is enabled, the module timestamps only the enabled
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 at the next RPI and at
every subsequent RPI.
Use the Configuration tab in RSLogix 5000 to set Timestamp Capture, as
shown in the example below.
IMPORTANT
We suggest you monitor the I.EventOverflow bits to make sure
you are aware of when transitions were either not timestamped
or when timestamp data was overwritten.
Select this box to enable the
Timestamp Latching feature.
Deselect the box to disable
the feature.