P3: Basic PLC Program for SINUMERIK 840D sl
13.12 Basic conditions and NC VAR selector
Basic Functions
916 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
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.
System features, supplementary conditions
The PC application "NC VAR selector" requires Windows2000 or a higher operating system.
The assignment of names to variables is described in:
References:
/LIS1/ Lists (Book1); Chapter: Variables,
or in the Variables Help file (integrated in NC VAR selector).
13.12.2.2 Description of functions
Overview
The figure below illustrates how the NC VAR selector is used within the STEP 7 environment.
Figure 13-21 Application of NC VAR selector in the STEP 7 environment
The NC VAR selector is used to generate a list of selected variables from a list of variables and then to generate
an .awl file that can be compiled by the STEP 7 compiler.
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.
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