Technical data
3 
Writing Target Language Files
3-40
Configurable RTW Variables
This table lists the configurable RTW variables.
These variables can be changed at the command line. For example,
tlc –r model.rtw MATLAB/rtw/c/grt/grt.tlc 
–IMATLAB/rtw/c/tlc –aInlineParameters=1
Or, if you’re using the RTW GUI within Simulink, simply modify the system 
target file dialog entry box. For example, to override the default behavior of 
FileSizeThreshold, modify the dialog box as:
grt.tlc –aFileSizeThreshold=20000
Table 3-7: Configurable RTW Variables
Variable Purpose
InlineParameters
Inlines parameter values in the generated code. 
Possible values are 0 or 1 with a default of 0.
FileSizeThreshold
Specifies the maximum number of lines to output to 
model.c before the file is split into model1.c, 
model2.c, etc. Default value is 50,000 lines.
MatFileLogging
Creates a MATLAB workspace containing the 
output of Outports, Scopes, and To Workspace 
blocks. Possible values are 0 or 1 with a default of 1.
ModelBlockInfo
Creates a data structure for independently 
monitoring signals in the model. Possible values are 
0 or 1 with a default of 0.
RollThreshold
Specifies the threshold for loop rolling. The %roll 
directive uses this value to determine whether a 
section of code should be enclosed into a 
for loop.










