Siemens SINUMERIK 840Di Function Manual page 994

Detailed description
2.11 Supplementary conditions and NC VAR selector
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 not therefore 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).
The assignment of names to variables is described in:
References:
/LIS/ Lists; Chapter: Variables,
or in the Variables Help file (integrated in NC VAR selector).
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Power Line Basic PLC Program (P3)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0