
Manufacturer Specific Profile Area
Manual • Doc.-No.: C.3034.21 / Rev. 1.2
CAN-CBX-THERMO
Page 110 of 123
8.11.10 Calibration Data
The analog inputs of the CAN-CBX-Thermo module have been calibrated by the manufacturer before
delivery. The following calibrations have been made:
• ADC gain PGA=1
• ADC gain PGA=2
• ADC gain PGA=3
• ADC gain PGA=4
With command Restore Default Parameters (1011
h
) the initial setting of the calibration data adjusted
by esd are reactivated.
8.11.10.1 Calibration and Process/Field-Value Calculation
In the following formulas the parameter names are shown without the channel identifier at the end of
the parameter names to improve the clarity.
The calculations shown in the following are automatically done by the local firmware. For the user the
corrected measuring values are accessible by the PV.
Field-Value Calculation
AI FV
adc raw value
ADC PGA
_
_
_
_
=
2
with
adc_raw value
:
A/D-converter value after addition on averaging
AI_FV
[Object 9100
h
]:
Field Value
ADC_PGA
[Object 2400
h
]:
ADC-gain