Data Acquisition Toolbox

StopAction

Specify the M-file action function to execute just after the device object stops running

Description

A stop event is generated immediately after the device object and hardware device stop executing. This occurs when:

• A stop function is issued.
• For analog input (AI) objects, the requested number of samples to acquire was reached or data was missed. For analog output (AO) objects, the requested number of samples to output was reached.
• A run-time error occurred.

A stop event executes the action function specified for StopAction. Under most circumstances, the action function is not guaranteed to complete execution until sometime after the device object and hardware device stop, and the Running property is set to Off.

Stop event information is stored in the Type and Data fields of the EventLog property. The Type field value is Stop. The Data field values are given below.

Data Field Value	Description
AbsTime	The absolute time (as a clock vector) the event occurred.
RelSample	The acquired (AI) or output (AO) sample number when the event occurred.

Characteristics

Usage	AI, AO, Common
Access	Read/write
Data type	String
Read-only when running	No

Values

The default value is an empty string.

See Also

Functions

stop

Properties

EventLog, Running

StartAction

Tag