FB_ExceptionList - General Information

Overview

Type:	Function block
Available as of:	V 1.0.0.0
Inherits from:	o
Implements:	oIF_ExceptionList
Versions:	Current version

Task

The FB_ExceptionList manages the global exception list.

Description

The FB_ExceptionList manages the global exception list that manages all the currently pending exceptions of a machine. It is globally instanced (G_fbExceptionList) and the body is called up in FB_MainMachine. Per interface methods are available for all the modules to assign and verify errors. The FB provides the complete error detection list to the online view global error detection list in via the outputs.

The interface IF_ExceptionList is distributed via the default interface ST_StandardItf to all modules of a machine. The interface provides all the information, as well as all the methods that a module requires for the exception handling.

Interface

Input	Data type	Description
i_xDiagQuit	BOOL	Input to acknowledge a detected error

Output	Data type	Description
q_axActiveReactions	ARRAY [1..Gc_uiNumberOfReactions] OF BOOL	Contains a bit array with the active reactions.
q_xHasException	BOOL	Output which indicates if the module triggered an exception that was not acknowledged yet.
q_xHasWarning	BOOL	Output which indicates if the module triggered an advisory that was not acknowledged yet.

Diagnostic Messages

q_etDiag	q_etDiagExt	Enumeration value	Description
OK	DeleteExceptionFromList	8	This message is triggered if an exception is being deleted from the list.
OK	InsertExceptionInList	7	An exception is currently being entered into the exception list.
DiagActive	SystemException	33	A Diagnostic class 3 error has been detected on the controller.
DiagActive	SystemFatalException	32	A Diagnostic class 4 error has been detected on the controller.
DiagActive	SystemWarning	34	A Diagnostic class 2 or 1 error has been detected on the controller.
UnexpectedProgramBehavior	ExceptionListOverflow	6	Overflow of the exception list

DeleteExceptionFromList

Enumeration name:	DeleteExceptionFromList
Enumeration value:	8
Description:	This message is triggered if an exception is being deleted from the list.

ExceptionListOverflow

Enumeration name:	ExceptionListOverflow
Enumeration value:	6
Description:	Overflow of the exception list

Issue	Cause	Solution
-	The maximum number of exceptions has been reached.	Clear the exception list by means of DiagQuit.

InsertExceptionInList

Enumeration name:	InsertExceptionInList
Enumeration value:	7
Description:	An exception is currently being entered into the exception list.

SystemException

Enumeration name:	SystemException
Enumeration value:	33
Description:	A Diagnostic class 3 error has been detected on the controller.

Issue	Cause	Solution
-	A problem occurred on the controller. The cause can be found in the diagnostic message.	Use the specified Diagnostic code from the message to find a solution for the problem.

SystemFatalException

Enumeration name:	SystemFatalException
Enumeration value:	32
Description:	A Diagnostic class 4 error has been detected on the controller.

Issue	Cause	Solution
-	A problem occurred on the controller. The cause can be found in the diagnostic message.	Use the specified Diagnostic code from the message to find a solution for the problem.

SystemWarning

Enumeration name:	SystemWarning
Enumeration value:	34
Description:	A Diagnostic class 2 or 1 error has been detected on the controller.

Issue	Cause	Solution
-	A problem occurred on the controller. The cause can be found in the diagnostic message.	Use the specified Diagnostic code from the message to find a solution for the problem.

Methods

Name	Description
ClearExceptionList	Clearing the exception list
InsertException	For inserting an exception into the exception list
SetException	Send exception
SetExceptionForOneReaction	Send an exception with one reaction

Properties

Name	Data type	Accessing	Description
astExceptionList	ARRAY[1..Gc_diMaxNumberOfActExceptions] OF ST_Exception	Read	Returns the exception list
axActiveReactions	ARRAY[1..Gc_uiNumberOfReactions] OF BOOL	Read	Returns the active reactions.
diNumberOfActExceptions	DINT	Read	Returns the number of the pending exceptions.
uiSearchException	UINT	Read	Returns the ID of the searched exception.
xHasException	BOOL	Read	Indicates an exception.
xHasWarning	BOOL	Read	Indicates an advisory.