FB_BaseCamsHmi

This base class (FB) is a TF8550 CamControl based cam switch list. It represents a common basis for the internal cam switch list of an FB_PtpMotionHmi and a stand-alone FB_CamsHmi instance.

	Class is abstract Since the class is defined as `ABSTRACT`, the class cannot be instantiated and must be implemented using inheritance.

Syntax:

FUNCTION_BLOCK ABSTRACT FB_BaseCamsHmi EXTENDS FB_BaseHmi

Properties

Name	Type	Access	Initial value	Description
Name	STRING	Get, Set	<SourceName>	Specifies the name of the class instance.
FB_BaseCamsHmi
ActiveOnOverflow	BOOL	Get, Set	TRUE	If TRUE, the cam switches remain active, even if the `CurrentValue` runs over them. This applies to all cam switches that reach up to the `Min`/`MaxValues`.
CurrentValue	LREAL	Get, Set	0.0	Actual value for evaluating the cam switch states.
ValueMax	LREAL	Get, Set	0.0	Maximum value to be displayed and evaluated on the scale.
ValueMin	LREAL	Get, Set	0.0	Minimum value to be displayed and evaluated on the scale.
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_BaseCamsHmi
Cam(`x`)	Returns a single cam switch via I_CamSwitchHmi interface.
Copy(`iCopy`)	Copies the values of the transferred cam switches to this instance.
FB_BaseHmi
Init(`ipBase`)	Default initialization method to pass the base class.
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`] _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.

Interfaces

Type	Description
I_Base	Standard interface on FB_Base.
I_CamsHmi	Standard interface for TF8550 CamControl based cams.
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().

Requirements

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 (>= v12.14.0.0)