FB_BA_View

The function block FB_BA_View is used to create a folder within the project structure.

Inheritance hierarchy

FB_BA_Base

Syntax

FUNCTION_BLOCK FB_BA_View EXTENDS FB_BA_Object IMPLEMENTS I_BA_View
VAR_INPUT CONSTANT PERSISTENT
  {region 'Variable Parameters'}
    eNodeType           : E_BA_NodeType := E_BA_NodeType.Automatic;
  {endregion}
END_VAR
VAR_INPUT CONSTANT
  {region 'Operational Parameters'}
    bAcknowledgeRm      : BOOL;
  {endregion}
END_VAR
VAR
  {region 'SubInit'}
    eDPADMode           : E_BA_DPADMode := E_BA_DPADMode.Undefined;
  {endregion}
  {region 'Events'}
    fbActiveEvents      : FB_BA_EventIndicator;
  {endregion}
END_VAR

Inputs CONSTANT PERSISTENT

Name	Type	Description
eNodeType	E_BA_NodeType	The variable NodeType describes the folder level within the project structure.

Inputs CONSTANT

Name	Type	Description
bAcknowledgeRm	BOOL	Input for local acknowledgement of the events of an object.

VAR

Name	Type	Description
eDPADMode	E_BA_DPADMode	The variable influences the generation of the user address key integrated by the project structure. To create the project structure it is mandatory to establish an integrated parent / child relationship within the TwinCAT project. This means that all instances of the FB_BA_View function block must be told from whom they originate. However, the number of levels within the TwinCAT program or symbol path often differs from the number of levels in the user address key. Often there are more levels in the symbol path of the TwinCAT project than in the user address key. It may therefore be necessary to exclude some levels from the concatenation of texts for the generic generation of object names and description texts. This is possible with the enumeration eDPADMode.
fbActiveEvents	FB_BA_EventIndicator	Gives information about events of all objects of a View object.

Name

Type

Description

eDPADMode

E_BA_DPADMode

The variable influences the generation of the user address key integrated by the project structure.

To create the project structure it is mandatory to establish an integrated parent / child relationship within the TwinCAT project.

This means that all instances of the FB_BA_View function block must be told from whom they originate.

However, the number of levels within the TwinCAT program or symbol path often differs from the number of levels in the user address key.

Often there are more levels in the symbol path of the TwinCAT project than in the user address key.

It may therefore be necessary to exclude some levels from the concatenation of texts for the generic generation of object names and description texts.

This is possible with the enumeration eDPADMode.

fbActiveEvents

FB_BA_EventIndicator

Gives information about events of all objects of a View object.

Methods

Name	Description
EventConditionCount	This method is invoked when certain events occur. It counts state changes.
OnObjectEventChange	Change of an event in a sub-object.
FindObjectItf	This looks up the index of a subordinate object using the object’s interface pointer.
FindObjectSbj	This determines the index of an object using the subject identifier.
GetObject	This method looks up a specific object using the known index.
IterateObjects	This iterates over all subordinate objects.
QueryObjectSbj	This looks up a subordinate object that matches the specified subject identifier.
ResolveObject	This resolves an object path that is relative to the current instance.

Requirements

Development environment	Required PLC library
TwinCAT from v3.1.4024.35	Tc3_XBA from v5.3.0.0

Further Information