Rockwell-automation Logix5000 Controllers Add-on Instructions Programm Manuale Utente Scaricare il pdf (Pagina 11)

Preface

Term Definition

Passed by value

When an argument is passed to a parameter by value, the value is copied in or out of the parameter when the Add-On

Instruction executes. The value of the argument does not change from external code or HMI interaction outside of the Add-On

Instruction itself.

Module reference parameter

A module reference parameter is an InOut parameter of the MODULE data type that points to the Module Object of a hardware

module. You can use module reference parameters in both Add-on Instruction logic and program logic. Since the module

reference parameter is passed by reference, it can access and modify attributes in a hardware module from an Add-On

Instruction.

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Rockwell-automation Logix5000 Controllers Add-on Instructions Programm Manuale Utente Pagina 11