Calculation of process data

The process data are calculated in up to seven steps between reading of the ADC and the process data output:

Name	Calculation formula	not active
Offset correction
Filter for averaging over 8 values
60 Hz mode adaptation
Calibration active
Calibration active
AC system offset	for	(condition not met)
Scaling		-

Table 1: Formulas for calculation of process data

The scaling includes the powers of ten selected in the range.
All gain factors should therefore correspond to 1/8 in order to obtain a total factor of 1. The value 8192 (0x2000) results in a total factor of 1.

Legend for table 1
Name	Meaning	CoE Index	Name	Meaning	CoE Index
X_ADC	Output value of the A/D converter	0x800E:01
Y_Z	Measured value after ADC offset correction		B_Z	Current ADC Zero value	0x800E:02
Y_Z	Measured value after ADC offset correction		B_ZCal	ADC Zero at the time of calibration	0x800F:20
Y_F	Measured value after averaging
Y₆₀	Measured value after adaptation of the 60 Hz integration time		B_F	60 Hz offset	0x800F:1D
Y₆₀			A_F	60 Hz gain	0x800F:1E
Y_H	Measured value after manufacturer calibration		B_K	Manufacturer offset	0x800F (odd subindices)
Y_H	Measured value after manufacturer calibration		A_K	Manufacturer gain	0x800F (even subindices)
Y_A	Measured value after user calibration		B_A	User offset	0x8002 (odd subindices)
Y_A	Measured value after user calibration		A_A	User gain	0x8002 (even subindices)
Y	Measured value after AC system offset		X_SO	AC system offset	0x800F:1F
Y_Scale	Measured value after scaling		F_Scal	End value in 1 bit per 1µV / 1µA

Table 2: Legend for table 1