In EcoStruxure Machine Expert / SoMachine, is it possible to create a Structure Variable consisting of mixed Persistent and Non-Persistent Variable leaf elements?

For example, we wish to have MyINT and MyWord Non-Persistent and MyBOOL as Persistent below:

TYPE MyStructType :

STRUCT

MyINT : INT;

MyWORD : WORD;

MyBOOL : BOOL;

END_STRUCT

END_TYPE

VAR_GLOBAL

ThisStruct : MyStructType;

END_VAR

SoMachine

EcoStruxure Machine Expert

PLC Configuration Software

No. It is not possible to create a Structure Variable that has leaf-element Variables that consist of mixed Persistent and Non-Persistent Variables.

Fully Persistent Structure Variables must be defined in the PersistentVars object, while Non-Persistent Structures must be defined in either a POU's Variable Definition box or the Global Variable List (GVL) separately.

Example:

The original Structure from the above Example can be split into two Structures defined in the GVL and PersistentVars objects.

1) Meant for Non-Persistent:
TYPE MyStructType :

STRUCT

MyINT : INT;

MyWORD : WORD;

END_STRUCT

END_TYPE

2) Meant for Persistent:

TYPE MyPersistentStructType :

STRUCT

MyBool : BOOL;

END_STRUCT

END_TYPE

VAR_GLOBAL

NonPersistentStruct : MyStructType;

END_VAR

VAR_GLOBAL PERSISTENT RETAIN

PersistentStruct :  MyPersistentStructType

END_VAR