FB_HVACPersistent_Sint
VAR_INPUT
bSetDefault : BOOL;
siVar_Default : SINT;
bSetDefault: if the variable is TRUE, the value of the input variable siVar_Default is adopted.
siVar_Default: default value defined by the user. The variable is of the data type SINT.
VAR_IN_OUT
siVar : SINT;
siVar: variable that is programmed fail-safe by the user.