ICS ELECTRONICS 4809A, Instruction Manual

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A-13
A
commands for setting up and querying a serial interface.
SYSTem:COMMunicate:SERial:BAUD 9600 <nl>
'Sets the baud rate to 9600
baud
SYST:COMM:SER:BAUD? <nl>
'Queries the current baud set-
ting
SYST:COMM:SER:BITS 8 <nl>
'Sets character format to 8 data
bits
Figure A-4 SCPI Command Examples
Multiple SCPI commands may be concatenated together as a compound
command using semi colons as command separators. The first command is
always referenced to the root node. Subsequent commands are referenced
to the same tree level as the previous command. Starting the subsequent
command with a colon puts it back at the root node. IEEE 488.2 common
commands and queries can be freely mixed with SCPI messages in the same
program message without affecting the above rules. Figure A-5 shows some
compound command examples.
SYST:COMM:SER:BAUD 9600; BAUD? <nl>
SYST:COMM:SER:BAUD 9600; :SYST:COMM:SER:
BITS 8 <nl>
SYST:COMM:SER:BAUD 9600; BAUD?; *ESR?; BIT 6; BIT?;
PACE XON; PACE?; *ESR? <nl>
Figure A-5 Compound Command Examples
A typical response would be: 9600; 0; 8; XON; 32 <nl>
The response includes five items because the command contains 5 queries.
The first item is 9600 which is the baud rate, the second item is ESR=0
which means no errors (so far). The third item is 8 (bit/word) which is
the current setting. The BIT 6 command was not accepted because only 7
or 8 are valid for this command. The fourth item XON means that XON