Rockwell-automation Logix5000 Program Parameters Programming Manual Manual do Utilizador descarregar pdf (Página 28)

Chapter 1 Connecting program parameters

The following information summarizes the program parameter connection rules.

Standard program to standard program connection rules

The following table summarizes the rules for using program parameters to connect

two standard programs.

Tip:

The connection rules for programs also apply to Equipment Phases.

Program_A

(Standard)

Program_B

(Standard)

Input Output InOut Public

Controller Scope Tag

(Standard Class)

Input

— Yes — Yes Yes

Output

Yes — Yes* Yes Yes

InOut

— Yes* — Yes Yes

Public

Yes Yes Yes — Alias

Controller Scope Tag

(Standard Class)

Yes Yes Yes Alias Alias

• * An InOut parameter can only be connected to an Output parameter if the

InOut parameter is configured as a constant.

• An Input parameter from Program_A can connect to an Output parameter

of Program_A (wrap around).

• Parameters of the same type cannot be connected together.

• Public tags can only bind to controller scope tags using an alias.

Program parameter

connection rules

28 Rockwell Automation Publication 1756-PM021A-EN-P - October 2014

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Rockwell-automation Logix5000 Program Parameters Programming Manual Manual do Utilizador Página 28