FB_WtcAccumulator

Implements an accumulator as the master for a WTC.

Internal functions:

Various push-out modes
Push-out by cam plate from velocity via position
Passive and active filling

Syntax:

FUNCTION_BLOCK FB_WtcAccumulator EXTENDS FB_CamAxis

Properties

Name	Type	Access	Initial value	Description
Name	STRING	Get, Set	<SourceName>	Specifies the name of the class instance.
FB_WtcAccumulator
AbortOnMissingVolume	BOOL	Get, Set	TRUE	The accumulator cancels the command to push-out if the filling volume is not reached.
FillinBusy	BOOL	Get	FALSE	The accumulator is filled.
FillingDone	BOOL	Get	FALSE	Filling of the accumulator has been completed.
FillVolumeReached	BOOL	Get	FALSE	The filling volume has been reached.
GuidingValue	LREAL	Get	0.0	Position as a scaled camming master value. Depends on FB_WtcAccumulatorHmi`.PushoutMode` and `GuidingMax`.
GuidingMax	LREAL	Get, Set	400	Maximum guiding value of the accumulator as camming master.
PushoutAborted	BOOL	Get	FALSE	The push-out process was aborted.
PushoutBusy	BOOL	Get	FALSE	The push-out process is running.
PushoutDone	BOOL	Get	FALSE	The push-out process is complete.
UsePassiveFilling	BOOL	Get, Set	TRUE	Use passive filling: The controller enable is canceled for the filling process, as the accumulator is filled by the back pressure of the extruder.
FB_Axis
Axis	I_AxisBase	Get	NULL	Interface to the assigned TF8560 axis.
Referencing	I_Referencing	Get	<Local>	Functions for referencing the axis.
FB_Motion
Motion	I_MotionBase	Get	NULL	Interface to the assigned TF8560 motion object.
ErrorAlarmTL	TcEventSeverity	Get, Set	Error (3)	Severity of the alarm that the axis triggers in the error state.
Specific	I_MotionSpecific	Get	-	Technology-specific functions/values
FB_BaseMd
MachineData	I_MdBaseContainer	Get	-	Interface for machine data handling.
FB_Base
BaseState	E_BaseState	Get	eNotHandled	Initialization state of the class instance.
Error	BOOL	Get	FALSE	Class is in an error state.
ResultMessage	I_AppMessage	Get	-	Access to the class-internal EventLogger.
[`PROTECTED`] _Name	STRING	Get	<SourceName>	`.Name` without leading 'fb'.

¹ Is obsolete

Methods

Name	Description
Reset()	Resets the error state of the class.
FB_WtcAccumulator
Filling(`bCommand`)	Starts the filling process of the accumulator.
Pushout(`bCommand`)	Starts the push-out process of the filling volume.
FB_CamAxis
SetCurve(`iCurve`)	Assign the curve to be used
FB_Axis
SetPosition(`bCommand`)	Setting the axis position with the `FB_AxisHmi.Setposition.`
FB_Motion
CheckAxisState()	Checks the current state of the axis.
FeedEnable(`bFeedEnableP, bFeedEnableN`)	Enable of a direction of movement.
JogNegative(`bCommand`)	Starts/stops a jog movement in negative direction.
JogPositive(`bCommand`)	Starts/stops a jog movement in positive direction.
Power(`bCommand`)	Switching on the drive control.
SetMotionRef(`iMotion`)	Assignment method for the TF8560 motion object.
FB_BaseMd
[`PROTECTED`] AddMdComp()	Adds a component of type I_MdComponent to the machine data container.
FB_Base
GetHMI()	Returns the assigned HMI object. Notice The method is not implemented in the `FB_Base` class. If the method is not overwritten by inheritance, a pseudo variable is always returned.
SetHMI(`ipBase`)	General assignment method for an `FB_BaseHmi` extending class as a local HMI. Notice The method is not implemented in the `FB_Base` class. If the method is not overridden by inheritance, it always fails.
[`PROTECTED`] _QueryNamespace()	Extracts the first part of the instance path as an object namespace.
[`PROTECTED`] _QueryObjectName()	Extracts the last part of the instance path as the object name.

¹ Is obsolete

Procedure controlling methods (FB_AdaptableSequence)

Name	Description
AccuStates()	Procedure for processing the states of the accumulator.

Possible events

ID	Description	Alarm/Message
11	Object error state	Alarm
21	Command rejected	Alarm
1002	Switching off failed	Message
7000	Insufficient filling volume	Alarm
10	Axis Errors	Alarm
20	Axis command rejected	Alarm

Interfaces

Type	Description
I_Base	Standard interface on FB_Base.
I_WtcAccumulator	Standard interface on FB_WtcAccumulator.
I_WtcMaster	General interface of a WTC master axis.
I_CamAxis	Standard interface on FB_MdAxis.
I_Axis	Standard interface on FB_Axis.
I_Motion	Standard interface on FB_Motion
I_TwoTaskInterface	Runtime interface for two PLC tasks.
I_BaseMd	Standard interface on FB_BaseMd.
I_BaseEmpty	For extension without standard interface.
I_BaseDev	Covers all methods and properties of the base class.

Prerequisites

Development environment	Target platform	PLC libraries to include
TwinCAT >= v3.1.4024.54 (recommended) TwinCAT >= v3.1.4024.42 (required)	PC or CX (x64, x86)	Tc3_PlasticBaseApplication (>= v12.10.2.0)

Further Information

AccuStates()