Varian XGS-600 Instruction Manual page 56

Command Description
x Data Digit
Termination
< CR >
The XGS-600 sends ?FF as a response if the command or data is invalid, or if the command
length is incorrect. There is no response to a wrong address, or lack of termination
character.
Description
Read XGS contents
Read pressure
Read
software revision
System Reset
Read Pressure Dump
B-2
XGS-600 Gauge Controller
All commands sent to the XGS-600 require < CR > termination.
< LF > is ignored so it is possible to use < CR/LF > with RS232 but
not with RS485 as it would cause a collision with the response.
Please note that time to response is extremely quick (10 to 20 ms)
so be ready! Responses are also terminated with < CR >.
Table B-1 Serial Command Set
Command
#aa01
#aa02cn
#aa05
#aa06
#aa0F
Notes
Response from
XGS-600
>hhhhhhhhhhhh
where "hh" sensor
board codes are:
10 = Hot Filament Ion
Gauge board (HFIG)
3A = Inverted
Magnetron board (IMG)
40 = convection board
(CNV)
FE = Empty slot
>x.xxxE-xx
>hhhh,hhhh . . .
where hhhh represents
revision hh.hh
>
>x.xxxE-xx,x.xxxE-xx, .
. .
Notes
Lists two-character
codes identifying the 6
board slots in the
system, following board
installation sequence
from left to right (front
view).
Revisions shown for
main board, then each
sensor board following
board installation
sequence from left to
right (front view).
All sensor readings in
one command.
Readings follow board
installation sequence
from left to right (front
view).