INFICON BCG450-SD ATM to Ultra-High Vacuum Triple Gauge (DeviceNet) - Manual (Page 29)

tira40e1 (2005-04) BCG450SDv1.cp
29
The S-Analog Sensor Object provides the following Common Services:
Service
Code
Service Name Description of Service
0E
h
Get_Attribute_Single Returns the contents of the specified attribute.
10
h
Set_Attribute_Single Modifies an attribute value.
Service
Code
Service Name Description of Service
61
h
Set Degas State Activates/deactivates degas mode according to
the parameter Degas State. Degas mode may
be terminated either automatically by device
timeout (3 min) or remotely by this service.
Parameter Data Type Description Semantics of Values
Degas
State
BOOL 0
switches Degas OFF
1
switches Degas ON
The pressure has to be below 7.2
×10 -6
mbar before degas can be swit-
ched on.
Service
Code
Service Name Description of Service
62
h
Set Emission
State
Turns the filament on and off according to the
parameter Emission State
Parameter Data Type Description Semantics of Values
Emission
State
BOOL → below
0
emission OFF
1
emission ON
If the gauge is in the Emission User Mode "Manual", please note:
• The service SET EMISSION STATE ⇒ ON may be executed only, if
the pressure is below 2.4
×10 -2
mbar. If the pressure is higher, an
Object State Conflict error message will be returned.
• If the pressure rises above 3.2×10 -2 mbar, the gauge will switch off
the emission automatically. The gauge will then show the Pirani
value.
• If the gauge is measuring in the ion gauge measuring range and the
service Set Emission State
⇒ OFF ist executed, the emission will be
switched off and the minimum Pirani value 1
×10 -3
mbar will be dis-
played.
2.4.3 Common Services
2.4.4 Object-Specific Services
on Instance 2 / Hot
Cathode Ion Gauge
2.4.4.1 SET DEGAS STATE
Set Degas State Request
Service Data Field
parameters
2.4.4.2 SET EMISSION STATE
Set Emission State Request
Service Data Field
parameters