Integration with External Systems Flashcards
7 cards from real CTA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Integration with External Systems flashcards as text
When TestStand integrates with an ERP system using a file-based handoff (CSV export), what architectural pattern best ensures no result records are lost if the ERP is temporarily unavailable?
Answer: Use a store-and-forward queue: persist files locally and retry delivery until ERP acknowledges
A store-and-forward pattern persists result files locally and retries delivery, guaranteeing no data loss even during extended ERP outages.
In TestStand, what is the effect of setting a step's 'Adapter' property to 'None' in a step that previously called an external module?
Answer: The step executes but performs no module call, only evaluating expressions and limits
Setting the adapter to 'None' means the step runs its pre/post expressions and limit comparisons but does not invoke any external module.
Which TestStand mechanism allows a hardware abstraction layer (HAL) to be swapped between test stations without modifying sequence logic?
Answer: Type-mapped step types that resolve to station-specific implementations via type palettes
Custom step types defined in type palettes can map to different underlying modules per station, providing HAL abstraction without changing sequence logic.
When using TestStand's built-in NI-XNET integration steps for CAN/LIN bus communication, what must be configured to ensure correct frame timing during simulation?
Answer: The NI-XNET database (FIBEX/DBC/LDF) must be imported and the session's timing source aligned to the bus clock
Correct frame timing in NI-XNET simulation requires the cluster database defining frame periods and the session timing source tied to the hardware bus clock.
What TestStand API object should an external application use to inject a variable value into a running execution before a specific step is reached?
Answer: Execution.GetNthActiveThread().AsPropertyObject() to write the variable on the running thread context
To modify a variable in a running execution, you access the thread's property object via Execution.GetNthActiveThread() and write to it while the execution is paused or between steps.
In TestStand's process model, which callback is the correct place to add custom external system integration code that must run once per test socket regardless of the sequence being executed?
Answer: PreUUT callback in the process model sequence
The PreUUT callback in the process model runs once per test socket before each UUT execution, making it the correct place for socket-level external system setup.
When integrating TestStand with a Manufacturing Execution System (MES) via REST API, what TestStand step type provides the most direct path to making HTTP calls without a LabVIEW dependency?
Answer: A Python adapter step using the requests library
The Python adapter calling the requests library provides a straightforward, dependency-light way to make REST API calls to a MES without requiring a LabVIEW installation.