Table 1.0 provides the format of the EPICS PV name. Table 1.1 lists the Vacuum Primaries used for LCLS. Table 1.2 lists the most commonly used EPICS PV attibutes.
Vacuum Device Name Examples |
Table 1.0 |
EPICS Device |
|---|
<Device Type>:<Area>:<Position>:<Attribute> |
Vacuum Device Types |
|
Table 1.1 |
|
Device Type |
Description |
|---|---|
VVPG |
Pneumatic (remotely controlled) gate valve |
VVMG |
Manual gate valve |
VPIO |
Ion pump |
VGCC |
Cold cathode gauge |
VGPR |
Pirani gauge |
VGHF |
Hot filament gauge |
VGCP |
Convectron gauge |
Vacuum Attributes |
||
Table 1.2 |
||
Device Type |
Attribute |
Description |
|---|---|---|
VVPG or VVMG |
POSITION |
Valve position. Options: Open, Closed, Moving, Inconsistent |
VPIO |
P |
Pressure (Torr) |
VPIO |
V |
Pump voltage (Volts) |
VPIO |
I |
Pump current (Amps) |
VPIO |
PSTAT1 |
Pressure status relative to process set point 1. Options: OK, Faulted |
VPIO |
PSTAT2 |
Pressure status relative to process set point 2. Options: OK, Faulted |
VGCC, VGPR, VGHF, or VGCP |
P |
Pressure (Torr) |
VGCC, VGPR, VGHF, or VGCP |
PSTAT |
Pressure status relative to process set point. Options: OK, Faulted |
