Create the "cmas2d.win.bat" file. This file connects the data file(s) (.dat) to the calculating module (the cmas2d.exe program). When the GiD Calculate option is selected, it executes the .bat file for the problem type selected.

When GiD executes the .bat file, it transfers three parameters in the following way:
(parameter 3) / *.bat (parameter 2) / (parameter 1)
parameter 1: project name
parameter 2: project directory
parameter 3: Problem type location directory

NOTE: The .win.bat file as used in Windows is explained below; the shell script for UNIX systems is also included with the documentation of this tutorial.

rem OutputFile: %2%1.log

rem ErrorFile: %2%1.err

A comment line such as "rem OutputFile: file_name.log" means that the contents of the file indicated will be shown if the user clicks Output View in Calculate->Calculate window.
In this example the .log file is shown. This file contains the coordinates of the center of mass.

A comment line such as "rem ErrorFile: file_name.err" means that the indicated file will contain the errors (if any). If the .err file is present at the end of the execution, a window comes up showing the error. The absence of the .err file indicates that the calculation is considered satisfactory.
GiD automatically deletes the .err files before initiating a calculation to avoid confusion.

del %2%1.log
del %2%1.post.res

This deletes results files from any previous calculations to avoid confusion.

%3\cmas2d.exe %2%1

This execute the cmas2d.exe and provide the .dat as input file.

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