Data acquired in DAQFactory can be logged using one of two methods:
A Logging Set: will log acquired data continuously as it is acquired. Logging sets only logged acquired data and cannot log variables or virtual channels unless performed manually. Logging sets run continuously until stopped, adding more data to the file as more data is acquired.
An Export Set: will write the results of multiple expressions to disk. Because each column in the data set is the result of an expression, anything can be exported. Export sets typically are run occasionally to create complex data sets, and usually pull their data from the history. Export sets write their data and then stop. They do not monitor for new data, but simply use the results of the expressions once to write the file.
Typically, logging sets will be used to log your raw data, and then if desired, export sets can be created to log calculated data or regions of interest in your data. Export sets are also often used to log only one line of data on demand.
