FB_HVACPersistent_Dword
VAR_INPUT
bSetDefault : BOOL;
dwVar_Default : DWORD; bSetDefault: if the variable is TRUE, the value of the input variable dwVar_Default is adopted.
dwVar_Default: default value defined by the user. The variable is of the data type DWORD.
VAR_IN_OUT
dwVar : DWORD; dwVar: variable that is programmed fail-safe by the user.