CAL RATIO_Instance (PV:=ProcessVariable, PV_TRACK:=ControllingProcessVariable, RK:=ExternalRatioCoefficient, K_RK:=CoefficientTypeFlag, K:=InternalRatioCoefficient, PARA:=Parameters, KACT=>RealRatioCoefficient, SP=>CalculatedOutput, STATUS=>StatusWord)
RATIO_Instance (PV:=ProcessVariable, PV_TRACK:=ControllingProcessVariable, RK:=ExternalRatioCoefficient, K_RK:=CoefficientTypeFlag, K:=InternalRatioCoefficient, PARA:=Parameters, KACT=>RealRatioCoefficient, SP=>CalculatedOutput, STATUS=>StatusWord) ;
Parameter
|
Data type
|
Meaning
|
---|---|---|
PV
|
Process value regulated by the control loop (only used to calculate KACT)
|
|
PV_TRACK
|
REAL
|
Reference variable of the control loop
|
RK
|
REAL
|
Remote relationship coefficient
|
K_RK
|
Coefficient type for ratio used
"1": remote ratio RK
"0": local ratio K
|
|
K
|
REAL
|
Coefficient for local ratio
|
PARA
|
Parameter
|
Parameter
|
Data type
|
Meaning
|
---|---|---|
KACT
|
REAL
|
Coefficient for real ratio
|
SP
|
REAL
|
Calculated output
|
STATUS
|
Status word
|
Element
|
Data type
|
Meaning
|
---|---|---|
k_min
|
Lower threshold with K or RK
|
|
k_max
|
REAL
|
Upper threshold with K or RK
|
sp_min
|
REAL
|
Lower threshold of the calculated output SP
|
sp_max
|
REAL
|
Upper threshold of the calculated output SP
|
bias
|
REAL
|
Offset coefficient
|
Base
|
Lower limit
|
Upper limit
|
---|---|---|
Hexadecimal
|
16#0
|
16#FFFF
|
Octal
|
8#0
|
8#177777
|
Binary
|
2#0
|
2#1111111111111111
|
Data
|
Representation in one of the bases
|
---|---|
0000000011010011
|
16#D3
|
1010101010101010
|
8#125252
|
0000000011010011
|
2#11010011
|