User`s guide

Retrieving Event Information
8-9
• “Data Fields for Error Events” on page 8-9
• “Data Fields for Timer Events” on page 8-10
Data Fields for Start, Stop, Frames Acquired, and Trigger Events
For start, stop, frames acquired, and trigger events, the Data structure contains these
fields.
Field Name Description
AbsTime Absolute time the event occurred, returned inMATLAB clock
format
[year month day hour minute seconds]
FrameMemoryLimit Amount of memory allotted for frame storage. You can specify
this value using the imaqmem function.
FrameMemoryUsed Amount of frame memory that is currently in use
FrameNumber Frame number relative to when the object was started
RelativeFrame Frame number relative to the execution of a trigger
TriggerIndex Trigger the event is associated with. For example, upon start,
the associated trigger is 0. Upon stop, it is equivalent to the
TriggersExecuted property.
Data Fields for Error Events
For error events, the Data structure contains these fields.
Field Name Description
AbsTime Absolute time the event occurred, returned in MATLAB clock
format
[year month day hour minute seconds]
FrameMemoryLimit Amount of memory allotted for frame storage. You can specify
this value using the imaqmem function.
FrameMemoryUsed Amount of frame memory that is currently in use
Message Text message associated with the error
MessageID MATLAB message identifier associated with the error