Import and Export of Retain/Persistent Variables by Library Functions

It is also possible to import or export the Retain/Persistent variables and the %M markers via system function calls from the PLC Application. The required system functions are implemented in the IEC library ABB_IntUtils_AC500.library.

It provides the following Functions or Function Blocks:

• SRAM_IMPORT
• SRAM_EXPORT
• SRAM_CLEARED

• SRAM_IMPORT
• SRAM_EXPORT
• SRAM_CLEARED