Attribute: location

Enforces a storage of the POU (PRG) in the non-safe memory area

Syntax:

{attribute 'location':=16#800}

Insert location: First line above the declaration part of programs (PRG)

The pragma attribute is automatically inserted when a PRG POU is marked as nonSafe. This causes all data of the PRG to be stored in the "non-safe memory area". The POU is no longer protected as interference-free.

The non-safe area is defined in the runtime system with the SysMemItf interface with DA_NONSAFETY.

#define DA_NONSAFETY 0x0800

For more information, see: Nonsafety-Relevant Programs (NonSafe PRGs)