From 09:00 PM Friday, August 7 - 10:30 AM CST Saturday, August 8, ni.com will be undergoing system upgrades that may result in temporary service interruption.

We appreciate your patience as we improve our online experience.

Table Of Contents

Verified State

Last Modified: April 29, 2019

NI-DAQmx checks the timing, triggering, and channel attributes/properties for correctness when the task transitions from the Unverified to the Verified state. You can explicitly perform this transition by calling the Control Task function/VI with Action set to Verify. While NI-DAQmx detects and verifies some invalid values for attributes/properties immediately when you set the attribute/property, NI-DAQmx cannot verify other values immediately because they depend on other attributes/properties and the devices being used. NI-DAQmx checks the value of these attributes/properties during the verify transition and reports any invalid values at that time. If NI-DAQmx finds no invalid values, the task is successfully verified and transitions to the Verified state. Otherwise, it remains in the Unverified state.

In certain cases, NI-DAQmx will coerce the values of attributes/properties when successfully verifying a task rather than generating an error. This is done when the value set on the attribute/property cannot be met exactly as specified and coercing it to a legal value has little functional impact on the task.


Recently Viewed Topics