FB_CammingLookUp

This class is able to dynamically allocate memory and make it available as a table. Similarly, this function block acts as a LookUp table for the cam plate core function or the transformation table of a transformation axis.

Syntax:

FUNCTION_BLOCK FB_CammingLookUp EXTENDS FB_MessageBase

Initialization parameters of the FB_init constructor

Name	Type	Description
Points	INT	Defines the number of points = 0 enables subsequent assignment via `SetPoints(…)`
OpMode	E_LookupMode	Defines the operation mode of the LookUp table = `eUndefined` enables subsequent assignment via `Interpolation` and `Equdistance`

Name

Type

Description

Points

INT

Defines the number of points

= 0 enables subsequent assignment via SetPoints(…)

OpMode

E_LookupMode

Defines the operation mode of the LookUp table

= eUndefined enables subsequent assignment via Interpolation and Equdistance

Properties

Name	Type	Access	Description
Equidistance	BOOL	Get, Set¹	In equidistant mode, the table assumes equal distances between the `MinGuidingValue` and the `MaxGuidingValue`.
Interpolation	E_LookupMode	Get, Set¹	Interpolation mode of the table
InvalidPoint	BOOL	Get	Is set by a call to `LookUp()` or `LookDown()` if the requested point is outside the valid range.
MinGuidingValue	LREAL	Get, Set	Smallest possible value for the `LookUp()` and `LookDown()` function
MaxGuidingValue	LREAL	Get, Set	Largest possible value for the `LookUp()` and `LookDown()` function
Overrun	BOOL	Get	Additional information on InvalidPoint: TRUE -> InvalidPoint is above the definition range. FALSE -> InvalidPoint is below the definition range.
Points	LREAL	Get	Number of available points in the table
Valid	BOOL	Get	The configuration of the table is validated and ready for use.
OpMode ²	E_LookupMode	Get	Operation mode of the table

¹Must be set before determining the number of points

²Obsolete

Methods

Name	Description
GetPoint()	Returns an equidistant point in the table.
GetPointNonEqui()	Returns any point consisting of a master and a slave value.
LookDown()	Translates a slave value to a matching master value.
LookUp()	Translates a master value to a matching slave value.
SetPoint()	Sets an equidistant point in the table.
SetPointNonEquidistant()	Sets any point consisting of a master and a slave value.
SetPoints()	Defines the number of assignable points once.
SetProperties()²	Sets the master limit values of the table
GetProperties()²	Returns the master limit values of the table
GetPoints()²	Returns the number of points available in the table
GetValid()²	Checks the table for validity

²Obsolete

Interfaces

Type	Description
I_CammingLookUp	Standard interface on FB_CammingLookUp

Requirements

Development environment	Target platform	PLC libraries to include
TwinCAT v3.1.4024.55	PC or CX (x64, x86)	Tc3_PlasticFunctions (>= v12.6.1.0)

Further Information