Use the Datalog functions to open and close datalog files, read from and write to datalog files, get and set datalog file positions, and get and set the number of datalog records.

Open/Create/Replace Datalog Function
Opens an existing datalog file, creates a new datalog file, or replaces an existing datalog file, programmatically or interactively using a file dialog box. This function does not work for files inside an LLB.
Read Datalog Function
Reads records from an open datalog file specified by refnum and returns it in record(s). Reading begins at the current datalog position. Use the Set Datalog Position function to move the current datalog position of the file.
Set Datalog Position Function
Moves the current datalog position of the file identified by refnum to the datalog position indicated by offset (in records) according to the mode in from.
Set Number of Records Function
Sets the size in records of the datalog file identified by refnum.
Write Datalog Function
Writes record(s) to an open datalog file specified by refnum. Sets the current datalog position to the end of the file before writing.
Get Datalog Position Function
Returns the current datalog position of the datalog file specified by refnum.
Get Number of Records Function
Returns the size in records of the datalog file identified by refnum.
Close File Function
Closes an open file specified by refnum and returns the path to the file associated with the refnum.

Parent topic: Advanced File Functions

LabVIEW Programming Reference Manual

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