INFICON SKY CDGxxxD (EtherCAT) User Manual
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tira68e1 (2013-05) CDGxxxD.cp
The Information Data object defines the input process data.
Indicated
pressure
Real pressure
p6'
p5'
p4'
p3'
p2'
p1'
p0 p1
p2 p3
Error
Overrange
Underrange
Error
Dis
play ra
ng
e
1
2
3
4
Measurement
range
The "measurement range" is the range between minimum and maximum pressure,
where the reading of the gauge is within the specified measurement uncertainty
limits.
The "valid measurement information range" (display range) is the complete
pressure range where the gauge gives an indication (measurement signal). The
valid measurement information range (display range) consists of underrange,
measurement range and overrange.
According to these definitions, 4 points are defined:
1
Lowest informational measurement value
2
Lowest precision measurement value
3
Highest precision measurement value
4
Highest informational measurement value
Index
SI
DataType
NV Access PM Name
9000
0x01 REAL
x
RO
Accumulated Zero Offset
0x02
REAL
x
RO
Highest
Informational
Measurement Value
0x03
REAL
x
RO
Highest
Precision
Measurement Value
0x04
REAL
x
RO
Lowest
Precision
Measurement Value
Accumulated Zero Offset: An amount added prior to Gain to derive Value. Result of
Zero Adjust Command (accumulated value).
Highest Informational Measurement Value: Highest value that the gauge can
measure without a specified accuracy.
Highest Precision Measurement Value: Highest valid value at which the gauge is
specified with an accuracy value. Above that value, the parameter Reading Valid is
set to invalid.
Lowest Precision Measurement Value: Lowest valid value at which the gauge is
specified with an accuracy value. Below that value, the parameter Reading Valid is
set to invalid.
4.6 Information Area
(0x9000…0x9FFF)
Highest / lowest
measurement value
Subindex 0x01
Subindex 0x02
Subindex 0x03
Subindex 0x04