Data Acquisition Toolbox

Evaluating the Digital I/O Object Status

At any time after a digital I/O object is created, you can evaluate its status by:

• Returning the value of the Running property
• Invoking the display summary

The Display Summary

You can invoke the display summary by typing the digital I/O object at the command line. The displayed information is designed so you can quickly evaluate the status of your data acquisition session. The display is divided into two main sections: general summary information and line summary information.

General Summary Information

The general display summary includes the device object type and the hardware device name, followed by the port parameters. The port parameters include the port ID, and whether the associated lines are configurable for reading or writing.

Line Summary Information

The line display summary includes property values associated with:

• The hardware line mapping
• The line name
• The port ID
• The line direction

The display summary for the example given in Example: Writing and Reading Digital Values is shown below.

You can use the Line property to display only the line summary information.

DIO.Line

Example: Generating Timer Events

Saving and Loading the Session