3 Programming the DB Connection Function
3-21
NJ/NX-series Database Connection CPU Units User’s Manual (W527)
3
Definition of DB Map Variables
When a DB_Insert (Insert DB Record), DB_Update (Update DB Record), DB_Select (Retrieve
DB Record) instruction is executed in a POU instance that is different from the POU instance
where the DB_CreateMapping (Create DB Map) instruction is executed, the DB Map Variable
needs to be a global variable.
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