FB_ParameterHmi

HMI class parallel to the base parameter class. This enables the provision of FB_Parameter instances in the HMI.

Syntax:

FUNCTION_BLOCK FB_ParameterHmi EXTENDS FB_BaseHmi

Name	Type	Access	Initial value	Description
Name	STRING	Get, Set	<SourceName>	Specifies the name of the class instance.
FB_ParameterHmi
Value	LREAL	Get, Set	0.0	Value of the parameter
Exists	BOOL	Get	FALSE	TRUE if this instance of the HMI class has a connection to a base class.
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'.

Name	Description
Reset()	Resets the error state of the class.
FB_BaseHmi
Init(`ipBase`)	Default initialization method to pass the base class.
FB_Base
GetHMI()	Returns the assigned HMI object. 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. The method is not implemented in the FB_Base class. If the method is not overridden by inheritance, it always fails.
[`PROTECTED`] _IsMyself(`iCmp`)	Identifies whether the transferred object corresponds to its own instance.
[`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.

Type	Description
I_Base	Standard interface on FB_Base.
I_BaseHmi	Standard interface on FB_BaseHmi.
I_BaseDev	Covers all methods and properties of the base class.
I_Comparable	Enables comparisons via `_IsMyself()` or F_IsSameInstance().

Development environment	Target platform	PLC libraries to include
TwinCAT 4026 >= v3.1.4026.19 TwinCAT 4024 >= v3.1.4024.71	PC or CX (x64, x86)	Tc3_PlasticBaseApplication (>= v12.16.0.0)