FB_AxisPlsPosModulo

 Function Block - Used for any position of a modulo axis in both directions.

Inputs

Input	Data Type	Range	Unit	Default	Description
ibExecute	BOOL	FALSE, TRUE	N/A	No default	Enable PLS.
iPosition	LREAL	No range	User units	No default	Any position of a modulo axis.
iModuloPosition	LREAL	No range	User units	No default	Modulo position of the axis.
iStartPos	LREAL	No range	User units	No default	Start position of PLS.
iEndPos	LREAL	No range	User units	No default	End position of PLS.
iDelayTime	TIME	0ms - 24hr	TIME	No default	Delay time for compensation.
iHysteresis	LREAL	No range	User units	No default	Hysteresis.
ibForce	BOOL	FALSE, TRUE	N/A	No default	Force PLS.

Outputs

Output	Data Type	Range	Unit	Description
oPLS	BOOL	FALSE, TRUE	N/A	Position limit switch.

Remarks

• The Boolean output oPLS is set to:
  • TRUE if the position has crossed the start position.
  • FALSE if the position has crossed the end position.
• The function block is executed cyclically.
  • The function block has the possibility to compensate a delay time of the connected device (e.g., glue nozzles).
• It is possible to define a hysteresis for switching on and off of the PLS.

Timing

Hysteresis

FBD Language Example

FFLD Language Example

IL Language Example

Not available.

ST Language Example

//PLSOutput is True when position input is between 180 and 270 with a T#2ms delay
//Can also force the output to be true with ForceOuput variable
//Hysteresis is on for 3 user units in case direction changes around start point

Inst_FB_AxisPlsPosModulo( EnablePLS, ActualPosition, ModuloPosition, 180, 270, T#2ms, 3, ForcePLS );

PLSOutput := Inst_FB_AxisPlsPosModulo.oPLS;