PLC Programming

Errors
4207
4208
4209
4210
4211
4212
"'N' modifier requires operand of type 'BOOL','BYTE','WORD' or 'DWORD'"
The N modifier requires a data type, for which a boolean negation can be executed.
"Conditional Operator requires type 'BOOL'"Make sure that the expression gives out a boolean
result or use a type conversion.
"Function name not allowed here"
Replace the function call by a variable or a constant.
"'CAL', 'CALC' and 'CALN' require a function block instance as operand"
Declare an instance of the function block which you want to call.
"Comments are only allowed at the end of line in IL"
Shift the comment to the end of the line or to an extra line.
"Accumulator is invalid before conditional statement"
The accu is not defined. This happens if an instruction is preceeding which does not submit a result
(e.g. 'CAL').
4213
"'S' and 'R' require 'BOOL' operand"
Use a boolean variable at this place.
4250
"Another 'ST' statement or end of POU expected"The line does not start with a valid ST instruction.
4251
4252
4253
4254
"Too many parameters in function '%s'"
There are more parameters given than are declared in the definition of the function.
"Too few parameters in function '%s'"
There are less parameters given than are declared in the definition of the function.
"'IF' or 'ELSIF' require 'BOOL' expression as condition"
Make sure that the condition for IF or ELSIF is a boolean expression.
"'WHILE' requires 'BOOL' expression as condition"
Make sure that the condition following the ‘WHILE’ is a boolean expression.
10-122 CoDeSys V2.3