vs Record Reference

Table of contents

The vs (vacuum sensor) record type supports vacuum gauge controllers. It handles ion gauge pressure readback, convectron gauge pressures, setpoint status and values, ion gauge on/off control, degas control, and alarm checking. The record communicates with hardware through the devVacSen device support driver using ASYN.

Device support types (DTYP): devGP307 (GP307), devGP350 (GP350), devMM200 (Televac MM200), devCC10 (Televac CC10), devMX200 (Televac MX200).

Configuration

Field Type Description Access
INP INLINK Device specification (ASYN port, address) Config
TYPE MENU Controller type Config
PREC SHORT Display precision Config (default: 1)
ERR SHORT Controller error count Read/Write (default: 5)

Controller Type Menu (TYPE)

Value String Device
0 GP307 Granville-Phillips 307
1 GP350 Granville-Phillips 350
2 MM200 Televac MM200
3 CC10 Televac CC10
4 MX200 Televac MX200

Ion Gauge Control

Field Type Description Access
IG1S MENU Ion gauge 1 set (command) Read/Write (Off/On)
IG1R MENU Ion gauge 1 readback (status) Read-only (Off/On)
IG2S MENU Ion gauge 2 set (command) Read/Write (Off/On)
IG2R MENU Ion gauge 2 readback (status) Read-only (Off/On)
DGSS MENU Degas set (command) Read/Write (Off/On)
DGSR MENU Degas readback (status) Read-only (Off/On)
FLTR MENU Fault readback Read-only (Off/On)

Pressure Readback

Linear Pressure

Field Type Description Access
VAL DOUBLE Ion gauge pressure Read-only
PRES DOUBLE Ion gauge pressure (duplicate) Read-only
CGAP DOUBLE Convectron gauge A pressure Read-only
CGBP DOUBLE Convectron gauge B pressure Read-only

Log10 Pressure

Field Type Description Access
LPRS DOUBLE Ion gauge log10 pressure Read-only
LCAP DOUBLE Convectron A log10 pressure Read-only
LCBP DOUBLE Convectron B log10 pressure Read-only

Setpoint Status

Field Type Description Access
SP1 MENU Setpoint 1 status Read-only (Off/On)
SP2 MENU Setpoint 2 status Read-only (Off/On)
SP3 MENU Setpoint 3 status Read-only (Off/On)
SP4 MENU Setpoint 4 status Read-only (Off/On)
SP5 MENU Setpoint 5 status Read-only (Off/On)
SP6 MENU Setpoint 6 status Read-only (Off/On)

Setpoint Values

Field Type Description Access
SP1S DOUBLE Setpoint 1 value set Read/Write
SP1R DOUBLE Setpoint 1 readback Read-only
SP2S DOUBLE Setpoint 2 value set Read/Write
SP2R DOUBLE Setpoint 2 readback Read-only
SP3S DOUBLE Setpoint 3 value set Read/Write
SP3R DOUBLE Setpoint 3 readback Read-only
SP4S DOUBLE Setpoint 4 value set Read/Write
SP4R DOUBLE Setpoint 4 readback Read-only

Alarm Fields

The record checks the VAL field (ion gauge pressure) against these limits.

Field Type Description Default
HIHI FLOAT IG pressure hihi alarm limit 1e-06
HIGH FLOAT IG pressure high alarm limit 1e-07
LOW FLOAT IG pressure low alarm limit 2e-12
LOLO FLOAT IG pressure lolo alarm limit 1e-12
HHSV MENU Hihi alarm severity NO_ALARM
HSV MENU High alarm severity NO_ALARM
LSV MENU Low alarm severity NO_ALARM
LLSV MENU Lolo alarm severity NO_ALARM
HYST DOUBLE Alarm deadband 0
LALM DOUBLE Last value alarmed (internal)

Display Range Fields

These fields set the display range for GUI screens.

Ion Gauge

Field Type Description Default
HOPR FLOAT IG pressure display high 0.0001
LOPR FLOAT IG pressure display low 1e-12
HLPR FLOAT IG log10 pressure display high -4
LLPR FLOAT IG log10 pressure display low -12

Convectron Gauge A

Field Type Description Default
HAPR FLOAT CGA pressure display high 1000
LAPR FLOAT CGA pressure display low 0.0001
HALR FLOAT CGA log10 pressure display high 3
LALR FLOAT CGA log10 pressure display low -4

Convectron Gauge B

Field Type Description Default
HBPR FLOAT CGB pressure display high 1000
LBPR FLOAT CGB pressure display low 0.0001
HBLR FLOAT CGB log10 pressure display high 3
LBLR FLOAT CGB log10 pressure display low -4

Internal Fields

These fields are used internally by the record for change detection. They store previous values and should not be modified directly.

Field Type Description
CHGC USHORT Changed control flags
PI1S, PI2S MENU Previous ion gauge set commands
PDSS MENU Previous degas set command
PIG1, PIG2 MENU Previous ion gauge readback
PDGS MENU Previous degas readback
PFLT MENU Previous fault readback
PSP1–PSP6 MENU Previous setpoint status
PS1S–PS4S DOUBLE Previous setpoint set values
PS1R–PS4R DOUBLE Previous setpoint readbacks
PVAL, PPRE DOUBLE Previous gauge pressure
PCGA, PCGB DOUBLE Previous convectron pressures
PLPE DOUBLE Previous IG log10 pressure
PLCA, PLCB DOUBLE Previous convectron log10 pressures