CLAD Debugging & Troubleshooting Techniques 2

Question 1

What does the Execution Highlighting (light bulb) feature do in LabVIEW?

Accepted Answer

Animates data flow through wires so you can observe values at runtime

Answer

Execution Highlighting animates the flow of data through the block diagram, displaying intermediate values on wires as the VI runs slowly.

Question 2

When using the Probe tool on a wire during debugging, what information is displayed?

Accepted Answer

The last value that passed through the wire during execution

Answer

The Probe tool displays the last value that passed through a wire, allowing you to inspect intermediate data during or after execution.

Question 3

Which window in LabVIEW lists all errors and warnings in a VI and allows you to navigate directly to the problematic node?

Accepted Answer

Error List (Ctrl+L)

Answer

The Error List (opened with Ctrl+L) lists all broken run arrows, errors, and warnings and lets you double-click to jump to the offending node.

Question 4

What is the purpose of a Retain Wire Values setting when combined with probes in LabVIEW?

Accepted Answer

It saves the last value on each wire so probes can display data even after execution stops

Answer

Retain Wire Values keeps the last value on each wire in memory, so probes can display those values after execution completes for post-mortem analysis.

Question 5

A subVI shows a broken run arrow but the parent VI compiled without errors. What is the most likely cause?

Accepted Answer

The subVI connector pane has unwired required terminals

Answer

If a subVI's required connector pane terminals are not wired in the calling VI, the subVI will break but may not immediately break the parent if the parent already compiled with a cached connector.

CLAD Practice Test

CLAD Practice Test

CLAD Debugging & Troubleshooting Techniques 2