CLAD 02-18
You need to programmatically update the value in a numeric control. Which is the most appropriate strategy?
- Use a Functional Global Variable
- Use a Local Variable
- Set the desired value as the default value.
- Use a Data Value Reference
Author: Doug Harper
CLAD 02-18
CLAD 01-07
CLAD 01-07
Which Property Node changes the text color attributes of any digital numeric control from a subVI
CLAD 03-39
CLAD 03-39
Which of the following apply to Property Nodes? (More than one answer may apply)
- Property Nodes allow attributes of front panel objects to be programmatically manipulated.
- Property Nodes can be used to update the values contained in a front panel object.
- More than one Property Node can be used for a single front panel object.
- Property Nodes contained in a subVI will always cause the front panel to be loaded into memory.
CLAD 03-09
CLAD 03-09
You have a control on the front panel of a VI and you need to modify one of its properties at run time. Which of the following is the best approach you would take?
- Create an implicit property node and select the property to modify.
- Create a control reference, pass the reference to a property node and select the property to modify.
- Create a linked shared variable and select the property to modify the property.
- Create a local variable and select the property to modify.
CLAD 02-37
CLAD 02-37
Which combination of words correctly completes the following statement?
Unlike ___________ Property Nodes, _____________ Property Nodes require _____________ as inputs in order to function correctly.
- Explicit; Implicit; Data Value References
- Implicit; Explicit; Data Value References
- Explicit; Implicit; Control References
- Implicit; Explicit; Control References
CLAD 02-20
CLAD 02-20
Which plot will change color first?
- Plot 1 because properties are executed top-down.
- Plot 0 because properties are implemented in numeric order starting at zero.
- Both plot will be updated simultaneously due to the multithreading of properties.
- It cannot be determined because LabVIEW performs operations in dataflow format.
CLAD 01-40
Doug Harper
Posted in CLAD, Dataflow, LabVIEW Programming Principles, Property Nodes
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CLAD 01-40
Which of the following is the best method to update an indicator on the front panel?
- Use a Value Property Node.
- Wire directly to the indicator terminal.
- Use a local variable.
- Use a functional global variable.
CLAD 01-25
CLAD 01-25
Does this code snippet demonstrate an appropriate use of a Property Node?
- Yes, because updating the value via a Property Node uses less memory than writing to the terminal.
- Yes, because updating the value via a Property Node allows for error checking.
- No, because you should always wire data directly into indicators when possible.
- No, because Property Nodes should only be used with more complex data types.
CLAD 01-03
CLAD 01-03
Which of the following apply to Property Nodes? (More than one answer may apply)
- Property Nodes allow attributes of front panel objects to be programmatically manipulated.
- Property Nodes can be used to update the values contained in a front panel object.
- More than one Property Node can be used for a single front panel object.
- Property Nodes can be used to programmatically generate a Value Change event.
CLAD 04-33
CLAD 04-33
Which of the following is NOT a component of an Error Cluster?
- Status
- Code
- Source
- VI Name