Fig. 3 Kl3224X - Data Flow - Beckhoff KL3224 Documentation

Calculation of process data
The process data that are transferred to the terminal bus are calculated using the following equations:
X_RL:
X_RTD:
X_R:
A_a, B_a:
A_h, B_h:
A_w, B_w:
Y_R:
Y_T:
Y_THS:
Y_TAS:
Y_AUS:
X_R = X_RTD-X_RL
Y_R = A_a * (X_R - B_a)
2
Y_T = a * Y_R + b * Y_R + c
1 1
Y_T = Y_R if output in Ω
Y_AUS = Y_T
Y_THS = A_h * Y_T + B_h
Y_AUS = Y_THS
Y_TAS = A_w * Y_T + B_w
Y_AUS = Y_TAS
Y_1 = A_h * Y_T + B_h
Y_2 = A_w * Y_1 + B_w
Y_AUS = Y_2
Fig. 3: KL3224x - Data flow
KL3224
(1.0)
(1.1)
(1.2)
1
(1.3)
(1.4)
(1.5)
(1.6)
(1.7)
Version: 2.0.0
ADC value of the supply line
ADC value of the temperature sensor, including one supply line
ADC value of the temperature sensor
Manufacturer gain and offset compensation (R17, R18)
Manufacturer scaling
User scaling
Temperature sensor resistance value
measured temperature in 1/16 °C
Temperature after manufacturer scaling (1/10 °C)
Temperature after user scaling
Process data to PLC
Calculating the resistance value
Linearization of the characteristic curve
Neither user nor manufacturer scaling is active
Manufacturer scaling active (factory setting)
User scaling active
Manufacturer and user scaling active
Product overview
13