INFICON PSG55x ATM to Medium Vacuum Gauge (EtherCAT) - Manual (Page 34)

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tira85e1 (2013-06) PxG55x.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 display range is the complete pressure range where the gauge gives an
indication (measurement signal). The 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 0x02 REAL x RO Highest Informational
Measurement Value
0x03 REAL x RO Highest Precision
Measurement Value
0x04 REAL x RO Lowest Precision
Measurement 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.
4.10 PCG with ATM
Information Area
(0x9000…0x9FFF)
Highest / lowest
measurement value
Subindex 0x02
Subindex 0x03
Subindex 0x04