User`s guide

18 Properties — Alphabetical List

18-12

ErrorFcn

Specify callback function to execute when run-time error occurs

Description

The ErrorFcn property specifies the function to execute when an error event occurs. A

run-time error event is generated immediately after a run-time error occurs.

Run-time errors include hardware errors and timeouts. Run-time errors do not include

configuration errors such as setting an invalid property value.

Run-time error event information is stored in the EventLog property. You can retrieve

any error message with the Data.Message field of EventLog.

Note: Callbacks, including ErrorFcn, are executed only when the video object is in

a running state. If you need to use the ErrorFcn callback for error handling during

previewing, you must start the video object before previewing. To do that without logging

data, use a manual trigger.

Characteristics

Access Read only while running

Data type String, function handle, or cell array

Values imaqcallback is the default callback function.