Object Structure
22
17200138_002_C0 – (2016-10) –
Leybold
Attr.
ID
Access
rule
NV/
V
Name DeviceNet
data type
Description of
attribute
Semantics of values
91 Get V Emission
Current
REAL Indicates setting
level of emission
current in amps
92 Set NV Filament
Control
USINT Defines the mode
in which the
filament is used.
0
≙ Auto The device
switches the filament
from Fil1 to Fil2 and
from Fil2 to Fil1 every
time the emission is
switched on.
1
≙ Manual The
device uses the
filament which is
selected by the
attribute Active
Filament
93 Get V Emission
Status
BOOL Indicates whether
the emission is
turned ON or
OFF
0
≙ OFF
1
≙ ON
94 Get V Sensor
Warning
Structure of
Byte
default
≙ 0
→ "Semantics" section
95 Get V Sensor
Alarm
Structure of
Byte
default
≙ 0
→ "Semantics" section
96 Get V Status
Extension
BYTE Bit mapped byte
providing addi-
tional status bits
Bit description:
0 Reading Invalid *)
1 Overrange
Exceeded
2 Underrange
Exceeded
99 Get NV Subclass UINT Identifies the sub-
set of additional
attributes, ser-
vices and behav-
iors for hot cath-
ode ion gauges
5
≙ Hot Cathode Ion
Gauge
100 Get V State
Emission
User
Mode
USINT Represents the
state according to
the service Set
Emission User
Mode
0
≙ Auto
1
≙ Manual
*) Logical inversion of Reading Valid.
2.4.2.4 Semantics of S-Analog Sensor Instance 2
→ Instance 1
An S-Analog Sensor object instance derives a reading from a physical analog sen-
sor. The reading is converted to the data type and units specified for the Value
attribute.
Using Counts and INT the following conversion has to be used:
Counts = [ log
10
(pressure) + k ] × 2000
where: k
mba
= 12.5
k
Pa
= 10.5
k
Tor
= 12.624903
ID 3 Data Type
ID 6 Value
To Next Page
Loading...