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Show Invalid From Open?

Last Modified: September 16, 2019

Shows frames and signals that are invalid at database open time.

After opening a database, this property always is set to False, meaning that invalid clusters, frames, and signals are not returned in properties that return XNET I/O Names for the database (e.g., XNET Cluster Frames and XNET Frame Signals).

The default value is False.

Data type: datatype_icon

Long Name: Show Invalid from Open?

Class: XNET Database

Permissions: Read/Write

Invalid clusters, frames, and signals are incorrectly defined and therefore cannot be used in the bus communication. The False setting is recommended when you use the database to create XNET sessions.

In case the database was opened to correct invalid configuration (for example, in a database editor), you must set the property to true prior to reading properties that return XNET I/O Names for the database (for example, XNET Cluster Frames and XNET Frame Signals).

For invalid objects, the XNET Cluster Configuration Status, XNET Frame Configuration Status, and XNET Signal Configuration Status properties return an error code that explains the problem. For valid objects, Configuration Status returns success (no error).

Clusters, frames, and signals that became invalid after the database is opened are still returned from the XNET Database Clusters, XNET Cluster Frames, and XNET Frame Signals properties, even if ShowInvalidFromOpen? is False and Configuration Status returns an error code. For example, if you open the frame with valid properties, then you set the Start Bit beyond the payload length, the Configuration Status returns an error, but the frame is returned from XNET Cluster Frames.

Where This Property Is Available:

Desktop OS: Windows

FPGA: Not supported

Web Server: Not supported in VIs that run in a web application

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