MLFB_HomeFindLimitInput

Description

The find limit input mode moves to a limit input. This method can be used if you have a positive or negative limit switch available that you want to establish as a home reference point.

Arguments

Input

ibExecute	Description	Start homing, edge-triggered
	Data type	BOOL
iAxisID	Description	ID of Axis block of Pipe Network
	Data type	DINT
iPosition	Description	Reference position
	Data type	LREAL
ibDirection	Description	0=positive, 1=negative
	Data type	BOOL
iVelocity	Description	Reference speed
	Data type	LREAL
iAcceleration	Description	Reference acceleration
	Data type	LREAL
iDeceleration	Description	Reference deceleration
	Data type	LREAL
ibLimitSwitch	Description	Pos. or neg. limit switch, high-active (depends on ibDirection)
	Data type	BOOL
iTimeout	Description	Time monitoring (T#0ms: off)
	Data type	TIME

Output

obDone	Description	Done bit
	Data type	BOOL
obActive	Description	Active bit
	Data type	BOOL
obError	Description	Error bit
	Data type	BOOL
oErrorID	Description	Error identifier, see list here ErrorID Description 1 Axis in error 2 Axis not enabled 3 Timeout expired 4 SDO read/write error 5 Input parameter out of range
	Data type	DINT

Example

ST

//Call homing function on Axis1 with preset velocity, accel, and decel values
//Start in negative direction and stop when axis hits limit switch or times out
//after seeing limit switch, set axis position to zero
Inst_MLFB_HomeFindLimitInput( StartHomeRoutine,
   PipeNetwork.AXIS1,
   0,
   TRUE,
   100,
   1000,
   1000,
   HomeDigitalInput,
   T#30s );

HomeDone := Inst_MLFB_HomeFindLimitInput.obDone;

Function Block Diagram

FFLD

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