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Model 2657A High Power System SourceMeter® Instrument Reference Manual Section 2: General operation

2657A-901-01 Rev. B/December 2012 2-71

Figure 23: USB port

File system navigation

The Model 2657A can use commands from the Lua fs library to navigate and list files that are

available on a flash drive. These Lua commands are in the fs command group in the instrument.

The fs commands make the file system of any given node available to the entire TSP-Link

system.

For example, you can use the command node[5].fs.readdir(".") to read the contents of the

current working directory on node 5.

The root folder of the USB flash drive has the absolute path:

"/usb1/"

You can use either the slash (/) or backslash (\) as a directory separator. However, the backslash is

also used as an escape character, so if you use it as a directory separator, you will generally need to

use a double backslash (\\) when you are creating scripts or sending commands to the instrument.

The instrument supports the following Lua fs commands:

fs.chdir() (on page 7-94)

fs.cwd()

(on page 7-94)

fs.is_dir()

(on page 7-94)

fs.is_file()

(on page 7-95)

fs.mkdir()

(on page 7-95)

fs.readdir()

(on page 7-96)

fs.rmdir()

(on page 7-96)

The following Lua fs commands are not supported at this time:

fs.chmod()

fs.chown()

fs.stat()

ter

NOTE

Keithley 2657A User Manual

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