Commissioning
EL31xx-00xx
177
Version: 5.9
5.6.4
Data stream and measurement ranges
Table of contents
•
Data stream [
}
177]
•
Correction calculation [
}
178]
•
Calibration [
}
184]
•
Manufacturer compensation [
}
184]
•
User compensation [
}
184]
•
User scaling [
}
184]
Data stream
The flow chart at the bottom (Fig.
Data stream representation of the EL31xx
) illustrates the data stream in
the EL31xx (processing of the raw data).
Fig. 192:
Data stream representation of the EL31xx
Calculation of process data
The concept “calibration”, which has historical roots at Beckhoff, is used here even if it has nothing to do with
the deviation statements of a calibration certificate. Actually, this is a description of the vendor or customer
calibration data/adjustment data used by the device during operation in order to maintain the assured
measuring accuracy.
The terminal constantly records measured values and saves the raw values from its A/D converter in the
ADC raw value object
0x80nE:01 [
}
195]
. After each recording of the analog signal, the correction calculation
takes place with the vendor and user calibration data as well as the user scaling, if these are activated (see
fig.
Data stream representation of the EL31xx [
}
177]
).
Calculation
Designation
X
F
= f(X
ADC
)
Output value after the filter
Y
H
= (X
ADC
– B
H
) x A
H
x 2
-14
Measured value after vendor calibration,
Y
A
= (Y
H
– B
A
) x A
A
x 2
-14
Measured value after vendor and user calibration
Y
S
= Y
A
x A
S
x 2
-16
+ B
S
Measured value following user scaling
Содержание EL3101
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Страница 6: ...Table of contents EL31xx 00xx 6 Version 5 9...
Страница 52: ...Mounting and wiring EL31xx 00xx 52 Version 5 9 Fig 33 Other installation positions...
Страница 123: ...Commissioning EL31xx 00xx 123 Version 5 9 Fig 118 Incorrect driver settings for the Ethernet port...
Страница 134: ...Commissioning EL31xx 00xx 134 Version 5 9 Fig 137 EtherCAT terminal in the TwinCAT tree left TwinCAT 2 right TwinCAT 3...
