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SA0056: Constant out of valid range

Detects literals (constants) outside of the valid range of the operator

Justification: The message is issued in cases when a value is compared with a constant which is outside of the range of this value. Then the comparison constantly returns TRUE or FALSE. This is an indication of a programming error.

Importance: High

Example 66. Example
PROGRAM PLC_PRG
VAR
    byTestVar: BYTE;
END_VAR

WHILE byTestVar >= 260 DO
    byTestVar := byTestVar + 1;
END_WHILE

Output in the Messages view:

  • sa_icon_message.png SA0056: Constant out of valid range



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