Rockwell Automation 1440-SDM02-01RA XM-124 Standard Dynamic Measurement Module - Manuel (Page 107)

Rockwell Automation Publication 1440-UM001C-EN-P - May 2014 107
Chapter
4
Trends
Triggered The XM-124 module can collect a triggered trend. A triggered trend is a time-
based trend that is collected when a relay on the module is activated, or when the
module receives a trigger event.
Once the triggered trend is configured, the XM-124 module continuously
monitors the trended measurements. When a trigger occurs, the module collects
additional data as specified by the Post Trigger parameter. The XM-124 module
can also store the spectrum or waveform at the time of the trigger.
The XM-124 module can only store one triggered trend. Unless the triggered
trend is latched, the trend data is overwritten with new data when the next trigger
occurs.
The triggered trend parameters define the trend data that is collected by the
module. Use these parameters to select the measurements included in the trend
records, the interval between trend records, and which relay triggers (activates)
the collection of the trend data.
Topic Page
Triggered 107
SU/CD 108
IMPORTANT The Triggered Trend parameters are not included in the EDS file and cannot
be edited using generic configuration tools such as RSNetWorx for
DeviceNet software.
Table 22 - Triggered Trend Parameters
Parameter Name Description Values/Comments
Enable Triggered Trend Measurements Enables/disables the triggered trend measurements. Select to
configure the triggered trend measurements. Check to enable.
Clear to disable.
Select Measurements Sets the measurements to be collected and stored in the module. 1 to 16 measurements can be selected.
Number of Records The maximum number of measurement sets that can be collected in
the trend buffer. The measurement sets make up the trend data. The Number of Records is automatically calculated
based upon the number of Trended
Measurements selected.