15 semantics of s-analog sensor instance 1 – INFICON PSG55x ATM to Medium Vacuum Gauge (DeviceNet) User Manual
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tira58e1-a (2012-03) PxG5xx.cp
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Attribute
ID
Access rule NV/
V
Name
DeviceNet
data type
Description of attribute
Semantics of values
96 Get
V
Status
extension
Byte
Bit-mapped byte providing
additional status bits of an
S-Analog sensor instance.
default = 0
→ "Semantics" section below
99
Get
V Subclass
UINT
Identifies a subset of addi-
tional instance attributes,
services and behaviors.
2 = Heat Transfer Vacuum Gauge
101 Set
NV
Pirani
OFF
Cmd
USINT
Flag to switch off the Pirani
in a dangerous
environment
0 = Pirani is always on;
1 = Pirani switches off at 120% of
s32CombineUpperLimit;
2 = Pirani is always off
If the Pirani is switched off, the meas-
urement part (wheatstone bridge) is
not powered and the instance outputs
it’s “Safe State” value
In this case the Status extension is
also set to “Reading Invalid”
102 Set
NV
Pirani
Adjust Hv
Pressure
INT or speci-
fied by data
type
Target value for the high
vacuum (hv) adjustment
<1E-4mbar = standard hv adjustment,
other values = adjustment to this
value
→ Instance 1 PCG55x
→ Instance 1 PCG55x
→ Instance 1 PCG55x
→ Instance 1 PCG55x
→ Instance 1 PCG55x
16 bits are used as sensor warnings.
Data component
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Sensor warning byte 0
0 0 0 0 0 0 0 0
Sensor warning byte 1
0 0 0 0 0 0
Electronics
Warning
0
16 bits are used as sensor faults.
Data component
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Sensor alarm byte 0
0 0 0 0 0 0 0
Sensor
Element
Failure
Sensor alarm byte 1
0 0 0 0 0 0
Electronics
Failure
0
8 bits providing the current sensor alarm state of the instance
Data component
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Sensor alarm byte 0
0 0 0 0 0
Underrange
exceeded
Overrange
exceeded
Reading
invalid
1)
1)
Logical inversion of reading valid
4.4.3.15 Semantics of S-Analog
Sensor Instance 1
Data type
Data units
Value
Safe state
Safe value
Sensor warning
Sensor alarm
Status extension