INFICON HPG400-SP ATM to High-Vacuum Gauge (Profibus) User Manual
Page 27
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tira36e1-a (0310) BPG/HPG400 v1.cp
27
Pressure unit
Full scale
COUNTS
30 333
Torr
750.06168
mTorr (Micron)
750 061.68
mbar
1 000
Pascal
100 000
When the gauge is not in the EXECUTING status (ID 25, Device Block) or if there
is a device error, a value defined by Safe State is output as pressure value. You
can select among:
• "0"
• Full scale
• Last valid value
• Safe Value (user-definable in ID 40)
Safe State
Coding
PV behavior
Zero
0
The Process Value (measured value ID 19) is set
to 0.
Full Scale
1
The Process Value (measured value ID 19) is set
to the full scale value (ID 24).
Hold Last Value
2
The Process Value is set to the last valid value
obtained in the EXECUTING status.
Use Safe Value
3
The Process Value (measured value ID 19) is set
to the Safe Value (ID 40).
The Safe Value is the value output with the Process Value parameter (ID 19) when
an error occurs or the gauge goes to the NOT EXECUTING status. If this value is
set to zero, it will remain on zero when the data unit is changed.
Overrange is the highest valid measured value at which Reading Valid is still on
"1".
Pressure unit
Overrange
COUNTS
31 000
Torr
750.06168
mTorr (Micron)
750 061.68
mbar
1 000
Pascal
100 000
Pressure unit
Overrange
COUNTS
30 333
Torr
750.06168
mTorr (Micron)
750 061.68
mbar
1 000
Pascal
100 000
Underrange is the lowest valid measured value at which Reading Valid is still on
"1".
Pressure unit
Underrange
COUNTS
20 480.7254
Torr
4.12534×10
-3
mTorr (Micron)
4.12534
mbar
5.5×10
-3
Pascal
0.55
HGP400-SP
3.2.2.7 Safe State
3.2.2.8 Safe Value
3.2.2.9 Overrange
BGP400-SP
HGP400-SP
3.2.2.10 Underrange
BGP400-SP