Lookup_JNegativeNegatively sloping sshaped lookup 
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Using the lookup converter →JanoschekNegative
the normalized current value of the stock, which is connected via the StockInfoInput
connector, is used as input to the sshaped Janoschek lookup function (negatively sloping) to obtain the output y.
The value used for the normalization is a constant by default (referenceValue = 1
); if hasConstantReference = false
the optional input u is used instead.
hasStockInfoInput = false
.Lookup_JPositive, Lookup_SPositive, Lookup_SNegative, Lookup_Table Lookup_TableOnFile
pol 
Value: "–" Type: String Description: Polarity 

referenceValue 
Value: 1 Type: ReferenceType Description: Constant reference value to normalize input 
hasStockInfoInput 
Value: true Type: Boolean Description: = true, if the input is given by the input connector u instead of stockInfoInput 
lowerBound 
Value: 0 Type: Real Description: Lower asymptote for u <= 0 (lowerBound < upperBound) 
upperBound 
Value: 2 Type: Real Description: Upper asymptote for u > infinity 
growthRate 
Value: 2 Type: Real Description: Determines the gradient of the curve 
x_ref 
Value: 1 Type: Real Description: xvalue for point of inflection(x_ref > 0) 
y_ref 
Value: 1 Type: Real Description: yvalue for point of inflection(lowerBound < y_ref < upperBound) 
hasConstantReference 
Value: true Type: Boolean Description: = true, if the reference value for the stock is given by a constant parameter 
stockInfoInput 
Type: StockInfoInput Description: Input of record with stockrelated information 


u_ref 
Type: RealInput Description: Reference value for stock 

y 
Type: RealOutput Description: Output of output type 

u 
Type: RealInput Description: Input for lookup (optional) 
normalizedStock 
Type: DmnlInput Description: Input u will be stated as dimensionless fraction with regard to a reference value 


absoluteSensor 
Type: AbsoluteSensor Description: Reports basic stock–related information 

lookup 
Type: JanoschekNegative Description: Janoschek's (Sshaped) growth curve with negative slope 