Lenze Engineer v2.21 Bedienungsanleitung PDF herunterladen (Seite 130)

Defining the system functionality

Terminology used

130

Lenze · Engineer · 2.13 EN - 10/2014

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Ports for machine applications

You can define Ports for a machine application to realise an exchange of information between

different machine applications:

• In principle, not only applications but also machine applications that have already been

configured can be allocated to a machine application. This makes it possible to create

hierarchical application structures.

• An "electrical shaft" is an example of a machine application.Establishing an interconnection

via an electrical shaft ( 186)

Application variables

The information to be exchanged between applications is called application variables.

• The corresponding application provides the application variable via an output port.

• A "control word" is an example of an application variable.

Element variables

An application variable consists of so-called Element variables.

• The corresponding application defines the application variable composition from the element

variables.

• Examples of element variables:

• Variable of the BOOL type for exchanging the "set controller inhibit" control signal.

• Variable of the DINT type for exchanging the speed setpoint.

 Note!

The definitions of the configurations which you generate within the functions are

network-independent!

• At first, the following specifications are not required for the definition that two

applications communicate with a specific cycle time via an application variable:

• The process data object the application variable is to be mapped to.

• The network the process data object must is to use for communication.

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Lenze Engineer v2.21 Bedienungsanleitung Seite 130