IsLogging

Indicate if hardware is acquiring or generating data

Description

The read-only IsLogging property indicates if the hardware is actively acquiring or generating data.

Tip

• IsRunning indicates the session has started, but the hardware might not be acquiring or generating data. It is still true while the hardware is waiting for a trigger, and while transferring data in the process of stopping.

• IsLogging indicates the hardware is actively acquiring or generating data.

• IsDone indicates the session object has completed its operation, including all necessary transfer of data.

Values

true

Value is logical 1 (true) if the device is acquiring or generating data.

false

Value is logical 0 (false) if the device is not acquiring or generating data.

Examples

Create and start a session.

s = daq.createSession('ni');
addAnalogOutputChannel(s,'cDAQ1Mod2','ao1','Voltage');
s.queueOutputData(linspace(-1,1,1000)');
startBackground(s);
s.IsRunning

ans =

     1

The session is running, so check for device logging.

s.IsLogging

ans =

     0

This result might indicate that the device is waiting for an external trigger. After triggering, wait until logging is complete.

wait(s)
s.IsDone

ans =

     1