Section 11: TSP command reference Model 2601B-PULSE System SourceMeter Instrument Reference Manual
11-104 2601B-PULSE-901-01A April 2020
io.input()
This function assigns a previously opened file, or opens a new file, as the default input file.
Usage
fileVar = io.input()
fileVar = io.input("newfile")
The descriptor of the input file or an error message (if the function fails)
A string representing the path of a file to open as the default input file, or the file
descriptor of an open file to use as the default input file
Details
The newfile path may be absolute or relative to the current working directory.
When using this function from a remote TSP-Link
®
node, this command does not accept a file
descriptor and does not return a value.
If the function fails, an error message is returned.
Also see
io.open() (on page 11-104)
io.output() (on page 11-105)
io.open()
This function opens a file for later reference.
Usage
fileVar, errorMsg = io.open("path")
fileVar, errorMsg = io.open("path", "mode")
The descriptor of the opened file
Indicates whether an error was encountered while processing the function
The path of the file to open
A string representing the intended access mode ("r" = read, "w" = write, and "a" =
append)
Details
The path to the file to open may be absolute or relative to the current working directory. If you
successfully open the file, errorMsg is nil and fileVar has the descriptor that can be used to
access the file.
If an error is encountered, the command returns nil for fileVar and an error string.