Siemens SINUMERIK 840D sl Function Manual page 1361

The list of selected variables is also stored as an ASCII file (file extension .var).
The variable list supplied with the "NC VAR selector" tool is adapted to the current NC
software version. This list does not contain any variables (GUD variables) defined by the
user. These variables are processed by the function block FB 5 in the basic program.
Note
The latest version of the "NC VAR selector" is capable of processing all previous NC
software versions. It is, therefore, not necessary to install different versions of the "NC VAR
selector" in parallel.
System features, supplementary conditions
The PC application "NC VAR selector" requires Windows 95 (or later operating system).
Assignment of names to variables is described in:
Reference:
/LIS1/ Lists (Volume 1); Section: Variables,
or in the Variables Help file (integrated in NC VAR selector).
Basic logic functions: PLC basic program solution line (P3 sl)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
2.11 General conditions and NC-VAR_Selector
Detailed description
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