INFICON BCG450-SD ATM to Ultra-High Vacuum Triple Gauge (DeviceNet) - Manual (Page 23)

tira40e1 (2005-04) BCG450SDv1.cp
23
Following is the Instance 3 with the subclass extension of the capacitance
diaphragm gauge part of the BCG450-SD. This instance is used to provide control
and status information for the capacitance diaphragm gauge part of the
BCG450-SD.
Attribute
ID
Access
Rule
NV/
V
Name DeviceNet
Data Type Description of Attribute Semantics of Values
3 Set/Cond.
→ below
NV Data Type USINT Determines the Data Type
of Value and all related
attributes as specified in
this table. → "Semantics" section
[default] = INT
4 →
"Semantics"
NV Data Units ENGUNITS Determines the Units con-
text of Value and all related
attributes. → "Semantics" section
[default] = Counts
5 Get V Reading
Valid BOOL Indicates that the Value
attribute contains a valid
value. 0 = invalid
1 = valid
(invalid: e.g., not warmed up yet)
6 Get V Value INT or speci-
fied by Data
Type if sup-
ported Analog input value The corrected, converted, calibrated
final value of the sensor.
→ "Semantics" section
7 Get V Status BYTE Alarm and Warning State
of this object instance → "Semantics" section
10 Get NV Full Scale INT or speci-
fied by Data
Type if sup-
ported The Value of Full Scale for
the sensor. The value of attribute Value corre-
sponding to the Full Scale calibrated
measurement of the sensor.
[default] = maximum allowable value
for the Data Type
25 Set NV Safe State USINT Specifies the behavior for
the Value for states other
than Execute → "Semantics" section
[default] = 0
26 Set NV Safe
Value INT or speci-
fied by Data
Type if sup-
ported The Value to be used for
Safe State = Safe Value → "Semantics" section
[default] = 0
32 Get NV Overrange INT or speci-
fied by Data
Type if sup-
ported
Specifies the highest valid
Value The value above which attribute
Reading Valid is set to invalid.
[default] = maximum allowable value
for the Data Type
33 Get NV Under-
range INT or speci-
fied by Data
Type if sup-
ported Specifies the lowest valid
Value The value below which attribute
Reading Valid is set to invalid.
[default] = minimum allowable value
for the Data Type
94 Get V Sensor
Warning Structure of
Byte default
0 → "Semantics"
95 Get V Sensor
Alarm Structure of
Byte default
0 → "Semantics"
96 Get V Status
Extension BYTE Bit mapped byte providing
additional status bits Bit description:
0 Reading Invalid
(Logical Inversion of
Reading Valid)
1 Overrange Exceeded
2 Underrange Exceeded
99 Get NV Subclass UINT Identifies the subset of
additional attributes, serv-
ices and behaviors for hot
cathode ion gauges 5
Capacitance Diaphragm Gauge
2.4.2.5 Instance Attributes of
Instance 3 / Capacitance
Diaphragm Gauge