RS-232-C Operation
SRQ Message
Example
Long Line Splitting
Example
Remarks
32
Each time the Master Summary Status (MSS) bit of the STatus
Byte (STB) is set, the SRQ message (a string of characters) is
to the host to indicate that the oscilloscope requests service. The
RS-232-C SRQ message has the same meaning as the GPIB SRQ
message. If the string is empty, no message will be sent. This is the
default setting. Note that no response message terminator is added
at the end of the SRQ message.
COMM_RS232 SRQ,"\r\n\nSRQ\r\n\a"
When the MSS bit is set, the oscilloscope will send
a <CR> followed by 2 <LF>s
SRQ
a <CR> followed by 1 <LF>
and the buzer will sound.
Line splitting is a feature provided for hosts that cannot accept
lines with more than a certain number of characters. The oscillo-
scope may be configured to split responses into many lines. This
feature is very useful for waveform or front-panel setup transfers
although it is applicable to all response messages. Two parameters
control this feature:
Line Separator: Off messages will not be
split into lines
<CR>,<LF> or <CR><LF> possible line termi-
nators.
the maximum number of characters in a line.Line length:
COMM_RS232 LS,LF,LL,40
The line separator is the ASCII character <LF>, the line is a maxi-
mum of 40 characters long (excluding the line separator).
If the oscilloscope receives the command PNSU?, it may answer:
PNSU #9000001496
A.AAA5555000655AA403000580019000000000001
000000000000000000000000000C1BO100580000
0000000000000000000000000000000000000000
Long commands sent to the oscilloscope may not be split into
lines. If a command sent to the oscilloscope is the response to a
previous query, the line split characters (<LF> and/or <CR>) must
be removed.
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