FB_TemperatureGroup

Class for group control of the temperature channels. The internal processing of the configuration can be traced using the state machine in GroupStates().

Syntax:

FUNCTION_BLOCK FB_TemperatureGroup EXTENDS FB_BaseMd

Properties

Name	Type	Access	Initial value	Description
Name	STRING	Get, Set	<SourceName>	Specifies the name of the class instance.
FB_TemperatureGroup
AlarmAbsoluteHigh	BOOL	Get	FALSE	Group (at least one channel) has exceeded the absolute maximum temperature.
AlarmAbsoluteLow	BOOL	Get	FALSE	Group (at least one channel) has fallen below the absolute temperature minimum.
AlarmHighHigh	BOOL	Get	FALSE	Group (at least one channel) has exceeded the HighHigh tolerance. Alarms to the tolerance values are only active if the zones are actively controlled.
AlarmHigh	BOOL	Get	FALSE	Group (at least one channel) has exceeded the High tolerance. Alarms to the tolerance values are only active if the zones are actively controlled.
AlarmLow	BOOL	Get	FALSE	Group (at least one channel) has fallen below the Low tolerance. Alarms to the tolerance values are only active if the zones are actively controlled.
AlarmLowLow	BOOL	Get	FALSE	Group (at least one channel) has fallen below the LowLow tolerance. Alarms to the tolerance values are only active if the zones are actively controlled.
AlarmNoResponse	BOOL	Get	FALSE	Temperature value of the group (at least one channel) does not respond to the control.
AttachableMdInterface	I_MdComponent	Get	-	Interface to the machine data component.
ConfigHash	T_SHA256	Get	0x0	Hash value of the current group configuration.
ConfigID	UINT	Get	0	ID of the group configuration (incremental).
EnableConfigConfirmation	BOOL	Get	FALSE	Confirmation is required to load a new configuration.
EnableLimitAlarms	BOOL	Get, Set	FALSE	Exceeding a tolerance value/limit triggers an alarm.
Fault	BOOL	Get	FALSE	Group (at least one channel) has an error.
Index	INT	Get	0	Index (ID) of the group.
IsActive	BOOL	Get	FALSE	Group (at least one channel) is actively controlled.
IsEnabled	BOOL	Get	FALSE	All channels of the group are enabled.
IsStandby	BOOL	Get	FALSE	All channels of the group are in standby mode.
LoadHash	T_SHA256	Get	0x0	Hash value of the last configuration loaded from a file.
ZonesCount	INT	Get	0	Number of zones in the group.
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'.

Methods

Name	Description
Reset()	Resets the error state of the class.
FB_TemperatureGroup
EnablePLC(`bCmd`)	Enables all zones of the group on the PLC side.
Force(`bHeating, bCooling`)	Forces all zones of the group to heating/cooling 100%.
UpdateGroup()	Updates the internal listing of the assigned groups.
Zones(`x`)	Returns an interface to the xth zone of the group.
FB_BaseMd
[`PROTECTED`] AddMdComp()	Adds a component of type I_MdComponent to the machine data container.
FB_Base
SetHMI(`ipBase`)	General assignment method for an FB_BaseHmi extending class. Notice This method always fails in the FB_Base implementation. Overwriting is therefore absolutely necessary.
[`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.

	Exceptions avoidance The list access functions (e.g. Channels(x), Groups(x), etc...) return a pseudo variable if the requested index is invalid. In addition, a message is thrown in the EventLogger.

Procedure controlling methods (FB_AdaptableSequence)

Type	Description
GroupStates()	Procedure for loading, executing and saving tuning.

Possible events

ID	Description	Alarm/Message
20x	Invalid interface queried	Message
401x	Temperature operation monitoring	Alarm
402x	Tuning parameters loading process	Alarm + Message
403x	Tuning parameters saving process	Alarm + Message
404x	File operation not available	Alarm

Machine data

Component	Description	Index range	Number of instances
FB_MdFileInfo	File information	0x0000 Fxxx	1
FB_MdTempGrouping	Parameters of the configured zones of a group	0x0000 4xxx	Up to 20 (Default)

Interfaces

Type	Description
I_Base	Standard interface on FB_Base.
I_TemperatureGroup	Standard interface on FB_TemperatureGroup.
I_AttachableMdInterface	Interface for containerless machine data components.
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.

Requirements

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 (>= v3.12.7.0)

Further Information

GroupStates()