Description
Original instructions
Function description
This function block should be used when two actuators are in use to enable coverage of the whole area (when two operating points are far apart: one below and one above).
The controller is also suitable for three-point step action controls, i.e. for cases where the two actuators work in opposition (one heats, the other cools).
EN and ENO can be configured as additional parameters.
Properties
The function block SPLRG has the following properties:
Representation in FBD
Representation:
Representation in LD
Representation:
Representation in IL
Representation:
CAL SPLRG_Instance (IN:=ValueToBeBrokenDown, 
    PARA:=Parameters, OUT1=>InstructionByActuator1, 
    OUT2=>InstructionByActuator2, STATUS=>StatusWord)
Representation in ST
Representation:
SPLRG_Instance (IN:=ValueToBeBrokenDown, 
    PARA:=Parameters, OUT1=>InstructionByActuator1, 
    OUT2=>InstructionByActuator2, STATUS=>StatusWord) ;
Parameter description SPLRG
Input parameter description:
Parameter
Data type
Meaning
IN
Value to be resolved (0 to 100%)
PARA
Parameter
Output parameter description:
Parameter
Data type
Meaning
OUT1
REAL
Manipulated variable for actuator 1
OUT2
REAL
Manipulated variable for actuator 2
STATUS
Status word
Parameter description Para_SPLRG
Data structure description
Element
Data type
Meaning
out1_th1
Input value IN, for which the following applies: OUT1 = out1_inf
out1_th2
REAL
Input value IN, for which the following applies: OUT1 = out1_sup
out1_inf
REAL
Lower threshold of the output OUT1
out1_sup
REAL
Upper threshold of the output OUT1
out2_th1
REAL
Input value IN, for which the following applies: OUT2 = out2 _inf
out2_th2
REAL
Input value IN, for which the following applies: OUT2 = out2_sup
out2_inf
REAL
Lower threshold for output OUT2
out2_sup
REAL
Upper threshold for output OUT2