Manual

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