User guide
tira47e1 (2005-08) BPG402SPv1.cp 33
This parameter indicates the detectable warnings occurring in connection with the
Pirani measuring part.
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Byte 0 0 0 0 0 0 0 0 0
Byte 1 0 0 0 0 0 0 Electronics Warning 0
The Sensor Warning bits defined here are copied into the Device Block ID 28 in the
"Device Exception Detail Warning" range of the Pirani measuring part.
ID Name Structure Data type Bytes Access Store
14 Hot Cathode Block State
Command
Rec 1 1/2_W
101 Block Type Simple Octet
string
4 2_R N
102 Status Extension Simple UINT8 1 1/2_R V
103 Sensor Alarm Struct Array of
2 bytes
2 1/2_R V
104 Sensor Warning Struct Array of
2 bytes
2 1/2_R V
105 Emission Status Simple Boolean 1 1/2_R/W V
106 Emission Current Simple FLOAT 4 1/2_R/W N
108 Active Filament Simple Boolean 1 1/2_R/W N
109 Degas Status Simple Boolean 1 1/2_R V
116 Active Degas Filament Simple UINT8 1 1/2_R V
119 Mode Filament Selection
(Filament User Mode)
Simple Boolean 1 2_R/W N
201 Emission User Mode
State
Simple Boolean 1 1/2_R V
According to the table in Appendix A, the Block Type ID has the value "16".
This parameter indicates that the overrange or underrange of the Hot Cathode Ion
Gauge instance is exceeded.
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reseved Underrange
Exceeded
1)
Overrange
Exceeded
2)
Reading
Invalid
3)
1)
Underrange: The parameter is set to "1", if the pressure value is below the
value defined in ID 45 (Analog Input Function Block Instance 2).
2)
Overrange: The parameter is set to "1", if the pressure value is above the value
defined in ID 44 (Analog Input Function Block Instance 2).
3)
Reading Invalid: The parameter is set to "1", if "Reading Valid" ID 23 (Analog
Input Function Block Instance 2) is set to"0".
If the instance is operated in its overrange or underrange, the corresponding bit
and additionally the bit "Reading Invalid" is set.
If an error occurs, the bit "Reading Invalid" as well as the corresponding error bits
in Device Block (ID 26, 27, 28 Device Block) are set.
3.3.2.4 Sensor Warning ID 104
3.3.3 Hot Cathode Ion Gauge
Transducer Block /
SLOT 1 / Instance 2
3.3.3.1 Block Type ID 101
3.3.3.2 Status Extension ID 102