Lenze PLC Designer PLC Designer (R2-x) - Manual (Page 574)

L-force | PLC Designer
Compiler Errors and Warnings
572 DMS 3.2 EN 02/2011 TD29

1501
"String constant passed as 'VAR_IN_OUT': '<Name>' must not be overwritten!"
The constant may not be written within the POU, because there no size check is
possible.
1502
"Variable '<Name>' has the same name as a POU. The POU will not be called!"
A variable is used, which has the same name like a POU.
Example:
PROGRAM a
...
VAR_GLOBAL
a: INT;
END_VAR
...
a; (* Not POU a is called but variable a is loaded. *)
1503
"The POU ‘<name>’ has no outputs. Box result is set to 'TRUE'."
The Output pin of a POU which has no outputs, is connected in FBD or KOP. The
assignment automatically gets the value TRUE.
1504
"’<name>’ (‘<number>’): Statement may not be executed due to the evaluation of the
logical expression"
Eventually not all branches of the logic expression will be executed.
Example:
IF a AND funct(TRUE) THEN ....
If a has is FALSE then funct will not be called.