FB_AxisInvBase

This FB creates an axis operated with a simple inverter. This type of axis is prepared for the use of drive components whose definition is below the possibilities of a servo axis. The biggest problem might be the lack of position feedback. But even very simple drives like frequency inverters may be used to support some tasks in a machine, such as turning an extruder or moving a conveyor belt. The axis does not require position feedback and does not support position-bound functions.

Syntax:

fbInvAxis:  FB_AxisInvBase
            (
                AxisName        := 'InvExtruder', 
                nPtpPoints      := 10,
                iProcessHandler := 0,
                iPosCamLookup   := 0,
                iVeloCamLookup  := 0
            );

Initialization parameters of the FB_init constructor

Designation	Type	Obligatory
AxisName	STRING	Yes	Used for messages and file names, among other things.
nPtpPoints	INT	No	Not supported for inverter axes
iProcessHandler	I_ProcessHandler	No	Optional: A function block for handling pressures and other process variables.
iPosCamLookup	I_CammingLookup	No	Not supported for inverter axes
iVeloCamLookup	I_CammingLookup	No	Optional: A lookup function block with a VvsP camming table.

Connection options (I/Os)

Designation	Type	Description
Device	I_InvDevice	Field device used to control the axis

	Availability of connection options The connection option is available as a property of the axis and can be linked once to an I/O instance: e.g. `fbInvAxis.Device := fbDeviceCoE;`

Requirements

Development environment	Target platform	PLC libraries to include
TwinCAT v3.1.4024.55	PC or CX (x64, x86)	Tc3_PlasticFunctions (>= v3.12.5.0)