Siemens SINUMERIK 840Di Function Manual page 995

2.11.2.2 Description of functions
Overview
The figure below illustrates how the NC VAR selector is used within the STEP 7
environment.
Fig. 2-20
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
A *.awl file contains the names and alias names of the NC variables, as well as information
about their address parameters.
Any data block generated from this file will only contain the address parameters (10 bytes
per parameter).
Power Line Basic PLC Program (P3)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Application of NC VAR selector in the STEP 7 environment
2.11 Supplementary conditions and NC VAR selector
Detailed description
2-83