LogToDiskMode (Data Acquisition Toolbox)

LogToDiskMode specifies whether data and events are saved to one disk file or multiple disk files. If LogToDiskMode is set to Overwrite, then the output file is overwritten each time start is issued. If LogToDiskMode is set to Index, a different disk file is created each time start is issued and the disk file name follows these rules:

If no number is specified as part of LogFileName, then two digits are appended to the end of the file name starting at "01". For example, if LogFileName is specified as data.daq, then data01.daq is used as the output file.
If a number is specified as part of LogFileName, then the number will be incremented by one for the next output file.

If an error occurs during data logging, such as the disk fills up, an error message is returned and data logging is stopped.

Separate analog input objects must be logged to separate files. Data stored to a disk file can be returned to the MATLAB workspace with the daqread function.

Characteristics


Device Objects	AI
Class	Common
Access	Read/write
Data Type	Enumerated list
Modify while Running	No

Values


`{Overwrite}`	The log file is overwritten.
`Index`	Multiple log files are written, each with an indexed file name.