Compiler Error C0549

Message: Initialization of the static variable '<variable name>' is not constant, or replaced constants is disabled.

Possible error cause: VAR_STAT and CONSTANT declarations are used together in a function block declaration. The Replaces constants compile option is disabled.

Example

The Replace constants compile option is disabled.

VAR CONSTANT
        iMaxInst : INT := 2;
END_VAR
VAR_STAT
        iIDs : INT := iMaxInst - 1;
END_VAR

Message: C0549: Initialization of the static variable 'iIDs' is not constant, or replaced constants is disabled.

Error correction: In Project → Project Settings, on the “Compile Options” tab, enable the “Replace constants ” compile option.