0x2038 External scaled measurement

Feature that takes an analog input and transforms it to an output as defined by a 5th order polynomial.

Name Index:Sub Type Bit Size Min Data Max Data Default Data Unit Access PDO Mapping
Scaled measurement value 0x2038:1 REAL 32 0 1 readonly (default) Transmit PDO (Inputs)

Scaled value of the selected analog input after applying the selected 5th order polynomial.

Name Index:Sub Type Bit Size Options Unit Access PDO Mapping
Analog input 0x2038:2 USINT 8
Internal 0
Analog input 1 1
Analog input 2 2
Analog input 3 3
Analog input 4 4
readwrite

Select the scaled measurement source.

Name Index:Sub Type Bit Size Min Data Max Data Default Data Unit Access PDO Mapping
Resistance 0x2038:3 UDINT 32 0 Ω readwrite

Select the pull-up resistor connected to the selected analog input.

In case there is no pull-up resistor "0" should be selected. In that case, the polynom would be applied to the ADC count directly (range: 0 - 4095).

Otherwise, it will be assume the user connected a pull-down resistor to create a voltage divider. The pull-down resistor value will be calculated and the polynomial will be applied to that value.

Name Index:Sub Type Bit Size Min Data Max Data Default Data Unit Access PDO Mapping
Constant a0 0x2038:4 REAL 32 0 readwrite

Constant a0 of the polynomial (Offset)

Name Index:Sub Type Bit Size Min Data Max Data Default Data Unit Access PDO Mapping
Constant a1 0x2038:5 REAL 32 0 readwrite

Constant a1 of the polynomial (1st order coefficient)

Name Index:Sub Type Bit Size Min Data Max Data Default Data Unit Access PDO Mapping
Constant a2 0x2038:6 REAL 32 0 readwrite

Constant a2 of the polynomial (2nd order coefficient)

Name Index:Sub Type Bit Size Min Data Max Data Default Data Unit Access PDO Mapping
Constant a3 0x2038:7 REAL 32 0 readwrite

Constant a3 of the polynomial (3rd order coefficient)

Name Index:Sub Type Bit Size Min Data Max Data Default Data Unit Access PDO Mapping
Constant a4 0x2038:8 REAL 32 0 readwrite

Constant a4 of the polynomial (4th order coefficient)

Name Index:Sub Type Bit Size Min Data Max Data Default Data Unit Access PDO Mapping
Constant a5 0x2038:9 REAL 32 0 readwrite

Constant a5 of the polynomial (5th order coefficient)

Name Index:Sub Type Bit Size Min Data Max Data Default Data Unit Access PDO Mapping
Cutoff frequency 0x2038:10 UINT 16 1 10000 500 Hz readwrite

Cutoff frequency (Hz) for the LP filter for external scaled analog measurements.

Name Index:Sub Type Bit Size Min Data Max Data Default Data Unit Access PDO Mapping
Upper error threshold 0x2038:11 REAL 32 1199570688 readwrite

Upper error threshold for the external scaled measurements. When the scaled measurement value exceeds this threshold, a fault is generated. It is also used to generate a warning when the scaled measurement value is within 5% of the error threshold. 

The default value corresponds to the equivalent int representation of the float value 65535.0

Name Index:Sub Type Bit Size Min Data Max Data Default Data Unit Access PDO Mapping
Lower error threshold 0x2038:12 REAL 32 0 readwrite

Lower error threshold for the external scaled measurements. When the scaled measurement value goes lower than this threshold, a fault is generated. It is also used to generate a warning when the scaled measurement value is within 5% of the error threshold.