PLC Programming

Appendix J: Compiler Errors and Warnings
1504
"’’ (‘’): 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.
1505
"Side effect in ''! Branch is probably not executed !"
The first input of the POU is FALSE, for this reason the side branch, which may come in at the second
input, will not be executed.
1506
1600
1700
1800
1801
"Variable '%s' has the same name as a local action. The action will not be called!"
Rename the variable or the action.
"Open DB unclear (generated code may be erroneous)."
The original Siemens program does not tell, which POU is openend.
"Eingang nicht verbunden."
An input box is used in CFC which has no assignment. For this no code will be generated.
"(element #): Invalid watchexpression '%s'"
The visualization element contains an expression which cannot be monitored. Check variable name
and placeholder replacements.
"' (number): No Input on Expression '' possible"
In the configuration of the visualization object at field input a composed expression is used. Replace
this by a single variable.
1802
"(Element number): Bitmap '%s' was not found"
Make sure, that an external bitmap-file is available in that path which is defined in the visualization
configuration dialog.
1900
1901
"POU '' (main routine) is not available in the library"
The Start-POU (z.B. PLC_PRG) will not be available, when the project is used as library.
"Access Variables and Variable Configurations are not saved in a library!"
Access variables and variable configuration are not stored in the library.
CoDeSys V2.3 10-101