INFICON SRT-422 Crucible Indexer - Manual (Page 57)

RS-232 Interface Page 55
$A1<cr> This command defines which SEL inputs will have priority. A1
defines the RS232 inputs as having priority while A0 defines the
STC I/O SEL inputs as having priority.
To use the RS-232 command inputs the AUTO.MAN switch must
be in AUTO, and a Lockout command $A1<cr> should be sent
once. This “Lockout” state is maintained until the unit is either
powered down, or another Lockout command is sent, setting
Lockout State to “AO”.
There is a “panic” mode in which if your RS-232 link should go
down and you need to select another pocket location simply move
the AUTO/MAN switch to MAN and select the desired pocket using
the thumbwheel. If you then re-establish your RS-232 link, move
the AUTO/MAN switch back to AUTO, and you will still have RS-
232 control.
Response: $*<cr>