PLC Programming

Appendix J: Compiler Errors and Warnings
4255
4256
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4258
4259
4260
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4263
"'UNTIL' requires 'BOOL' expression as condition"
Make sure that the condition following the ‘UNTIL’ is a boolean expression.
"'NOT' requires 'BOOL' operand"
Make sure that the condition following the ‘NOT’ is a boolean expression.
"Variable of 'FOR' statement must be of type 'INT'"
Make sure that the counter variable is of an integer or bitstring data type (e.g. DINT, DWORD).
"Expression in 'FOR' statement is no variable with write access"
Replace the counter variable by a variable with write access.
"Start value in 'FOR' statement is no variable with write access"
The start value in the ‚FOR' instruction must be compatible to the type of the counter variable.
"End value of 'FOR' statement must be of type 'INT'"
The end value in the ‚FOR' instruction must be compatible to the type of the counter variable.
"Increment value of 'FOR' statement must be of type 'INT'"
The incremental value in the ‚FOR' instruction must be compatible to the type of the counter variable.
"'EXIT' outside a loop"
Use 'EXIT' only within 'FOR', 'WHILE' or 'UNTIL' instructions.
"Expecting Number, 'ELSE' or 'END_CASE'"
Within a ‘CASE' expression you only can use a number or a 'ELSE' instruction or the ending
instruction 'END_CASE'.
4264
"'CASE' requires selector of an integer type"
Make sure that the selector is of an integer or bitstring data type (e.g. DINT, DWORD).
4265
"Number expected after ','"
In the enumeration of the CASE selectors there must be inserted a further selector after a comma.
4266
"At least one statement is required"
CoDeSys V2.3 10-123