INFICON HPG400-SD ATM to Ultra-High Vacuum Gauge (DeviceNet) User Manual
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tira03e1-b (0310) BPG/HPG400-SDv1.cp
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16 Bits are used as sensor warnings. Bit 8
… Bit 16 are mapped to the Exception
Detail Warning 5, Bit 0
… Bit 7 are mapped to the Exception Detail Warning 4.
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
Pressure
too high for
degas
(Only
BPG400-
SD).
0
0
0
The bit "Pressure too high for degas" will be set if the pressure is above
7.2×10
-6
mbar when a degas service is requested. The bit will be reset when the
pressure is below 7.2×10
-6
mbar (Only BPG400-SD).
Attribute
ID
Access
Rule
NV/
V
Name
DeviceNet
Data Type
Description of Attribute
Semantics of Values
3
Set / Con-
ditional:
→
Instance 1
NV
Data
Type
USINT
Determines the Data Type
of Value and all related
attributes as specified in
this table.
→ "Semantics" section below.
int
C3 hex [default]
float
CA hex
4
Get
NV
Data
Units
UINT
Determines the Units
context of Value and all
related attributes.
Supported Values:
Counts
1001
h
[default]
mbar
1308
h
Torr
1301
h
Pascal
1309
h
5
Get
V
Reading
Valid
BOOL
Indicates that the Value
attribute contains a valid
value.
0 = invalid
1 = valid
6
Get
V
Value
INT or speci-
fied by Data
Type
The value of the
Setpoint A (Setpoint B)
relay.
7
Get
V
Status
BYTE
Alarm and Warning State
of this object instance
→ "Semantics" section below.
Behavior as Trip Point LOW
A bit mapped byte which indicates the Alarm and Warning Exception status of the
object instance. The following definition applies:
Bit
Definition
0
High Alarm Exception:
0 = cleared
1 = set
1
Low Alarm Exception:
0 = cleared
1 = set
2
High Warning Exception: 0 = cleared
1 = set
3
Low Warning Exception: 0 = cleared
1 = set
4
Reserved
5
Reserved
6
Reserved
7
Reserved
If the pressure (attribute 6, instance 1 and 2) decreases below the Set Point value
(attribute 6, instance 21 and 22) an alarm or warning exception condition will be
generated. The hysteresis is set to 10%.
For example: A SET Point value of 100 will result in an exception condition being
set when the Value is below 100 and cleared when the Value increases above 110.
Sensor Warning
2.4.2.5 Instance Attributes of
Instance 21 / Setpoint A
(Instance 22 / Setpoint B)
Status
Set Points