Lenze PLC Designer PLC Designer (R3-1) - Manual (Page 104)

L-force | PLC Designer
Concepts and Base Components
102 DMS 4.1 EN 03/2011 TD29

3.7.16 Visualization
For information on visualizations in »PLC Designer« see Visualization Editor.
3.7.17 POUs for implicit checks
Below an application you might add special POUs, which must be available there, if the
implicitly provided check functionality for array and range boundaries, divisions by
zero and pointers during runtime should be used.
For this purpose the "Add Object" menu in category " POUs for implicit checks" the
following functions:
• CheckBounds
• CheckDivInt
• CheckDivLInt
• CheckDivReal
• CheckDivLreal
• CheckRange
• CheckRangeUnsigned
• CheckPointer
After having inserted a check POU, it will be opened in the editor corresponding to the
implementation language selected. A default implementation that might be adapted
to your requirements is available in the ST editor.
After having inserted a certain check POU, the option will not be available in the dialog
any longer, thus avoiding a double insertion. If all types of check POUs have already
been added below the application, the 'Add Object' dialog at all will not provide the
'POUs for implicit checks' category any longer.
Note: Do not modify the declaration part of an implicit check function, in order to
maintain the check functionality.