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RETAIN PERSISTENT only stored at gracefully shutdown?

Created: 2025-11-17

Updated: 2025-11-26

I have

{attribute 'checksumnoinit_override' := '2629838988'}
{attribute 'init_related_code' := '5c6efcf8-e0f4-4166-a9fa-17eadd8908df'}
VAR_GLOBAL RETAIN PERSISTENT
    {attribute 'order_in_persistent_editor' := '0'}
    segmentValue: ARRAY[0..49] OF REAL;
    {attribute 'order_in_persistent_editor' := '1'}
    segmentTime: ARRAY[0..49] OF REAL;

    // Generated instance path of persistent variable
    PRG.test: INT;
    // Generated instance path of persistent variable
    PRG.nw_storage: SysSocket_Implementation.SysSocket_Interfaces.SOCK_ADAPTER_INFORMATION2;
END_VAR

When I have changed PRG.nw_storage it will not be stored at a power off, but if I do a:
sudo systemctl restart codesycontrol and then a power off it will be stored.

Is there a way to store persistent variables without a restart of codesyscontrol?
Can anyone explain how and when CODESYS store persistent variables?

dinesh-vamtec - 2025-11-26

I have an idea to save the persistent variable. Currently in testing processs. If testing completed I share the solution to you.

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RETAIN PERSISTENT only stored at gracefully shutdown?