Remote Commands - TTI QL Serie Manual De Instrucciones

RS232 Remote Command Formats
Serial input to the instrument is buffered in a 256 byte input queue which is filled, under interrupt, in a
manner transparent to all other instrument operations. The instrument will send XOFF when
approximately 200 characters are in the queue. XON will be sent when approximately 100 free
spaces become available in the queue after XOFF was sent. This queue contains raw (un-parsed)
data which is taken, by the parser, as required. Commands (and queries) are executed in order and
the parser will not start a new command until any previous command or query is complete. In non–
addressable RS232 mode responses to commands or queries are sent immediately; there is no
output queue. In addressable mode the response formatter will wait indefinitely if necessary, until the
instrument is addressed to talk and the complete response message has been sent, before the
parser is allowed to start the next command in the input queue.
Commands must be sent as specified in the commands list and must be terminated with the
command terminator code 0AH (Line Feed, LF). Commands may be sent in groups with individual
commands separated from each other by the code 3BH (;). The group must be terminated with
command terminator 0AH (Line Feed, LF).
Responses from the instrument to the controller are sent as specified in the commands list. Each
response is terminated by 0DH (Carriage Return, CR) followed by 0AH (Line Feed, LF).
is defined as character codes 00H to 20H inclusive with the exception of those which
<WHITE SPACE>
are specified as Addressable RS232 (ARC) control codes.
is ignored except in command identifiers. e.g. '*C LS' is not equivalent to '*CLS'.
<WHITE SPACE>
The high bit of all characters is ignored.
The commands are case insensitive.
GPIB Remote Command Formats
GPIB input to the instrument is buffered in a 256 byte input queue which is filled, under interrupt, in a
manner transparent to all other instrument operations. The queue contains raw (un-parsed) data
which is taken, by the parser, as required. Commands (and queries) are executed in order and the
parser will not start a new command until any previous command or query is complete. There is no
output queue which means that the response formatter will wait, indefinitely if necessary, until the
instrument is addressed to talk and the complete response message has been sent, before the
parser is allowed to start the next command in the input queue.
Commands are sent as
more
<PROGRAM MESSAGE UNIT>
elements.
A
<PROGRAM MESSAGE UNIT>
A
<PROGRAM MESSAGE UNIT SEPARATOR>
<PROGRAM MESSAGES>
any of the following:
NL
NL^END
^END
Responses from the instrument to the controller are sent as
consists of one
MESSAGE>
.
TERMINATOR>
A
<RESPONSE MESSAGE TERMINATOR>
<PROGRAM MESSAGES>
elements separated by
is any of the commands in the remote commands list.
are separated by
The new line character (0AH)
The new line character with the END message
The END message with the last character of the message
<RESPONSE MESSAGE UNIT>
is the new line character with the END message NL^END.

Remote Commands

by the controller, each message consisting of zero or
<PROGRAM MESSAGE UNIT SEPARATOR>
is the semi-colon character ';' (3BH).
<PROGRAM MESSAGE TERMINATOR>
<RESPONSE MESSAGES>
followed by a
elements which may be
. A
<RESPONSE
<RESPONSE MESSAGE
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