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

Page 18

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tira40e1 (2005-04) BCG450SDv1.cp

Attribute

ID

Access Rule

NV/

V

Name

DeviceNet Data
Type

Description of
Attribute

Semantics of Values

7

Get

V

Status

BYTE

Alarm and Warning
State of this object
instance

Always zero, because Alarm
and Warning Trip Points are not
implemented

10

Get

NV

Full Scale

INT or specified
by Data Type

The Value of Full
Scale for the sen-
sor.

The value of attribute Value
corresponding 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 be-
havior for the Value
for states other
than Execute

→ "Semantics" section below.
[default] = 0

26

Set

NV

Safe Value

INT or specified
by Data Type

The Value to be
used for Safe State
= Safe Value

→ "Semantics" section below.
[default] = 0

32

Get

NV

Overrange

INT or specified
by Data Type

Specifies the hig-
hest valid Value

The value above which attribute
Reading Valid is set to invalid.

[default] = maximum allowable
value for the Data Type

33

Get

NV

Underrange

INT or specified
by Data Type

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

Struct of Byte

Bit definitions of
Sensor Warnings

0 = [default]
→ "Semantics" section

95

Get

V

Sensor Alarm

Struct of Byte

Bit definitions of
Sensor Alarms

0 = [default]
→ "Semantics" section

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

Defines a subset of
additional attrib-
utes, services and
behaviors.

02 = Heat Transfer Vacuum
Gauge

All Data Type attributes use the enumerated values integer or float
(

→ Appendix A).

The Data Type value will be set automatically based upon the first valid I/O con-
nection established by the device.

If no established I/O connections exist, which include an attribute from this object,
then the Data Type attribute is settable provided that the object is in the Idle State.

Note: Using data type integer in combination with a pressure unit (mbar, Torr or Pa)
will obviously not produce reasonable values below 1.

The Data Unit is only settable in the IDLE state.

2.4.2.2 Semantics of S-Analog

Sensor Instance 1

Data Type

Data Unit