Current and Selected Instances

There is zero or one current instance.

There is zero to N selected instances.

This is possibly best understood by using a shipped demonstration example.

In VLF-ONE

Use Example Applications -> Foundation -> Instance List

The shipped command handlers used are DF_T54H2O (All Entries) and DF_T54H1O (Selected Entries).

In VLF-WIN

Execute Programming Techniques -> Basic -> Selected, Current or All Entries.

The shipped command handlers used are DF_DET22 (All Entries) and DF_DET15 (Selected Entries).