Bus Learn; Programming Data Out; What Happens When I Switch To Local - Fluke PM6669 Operator's Manual

Page: 30

Bus Learn

–
Set the counter to LOCAL and select the functions you
want from the front panel.
–
If required, set the counter to Remote and program spe-
cial bus-functions from the controller.
–
Check that the counter/controller performs the intended
functions.
–
If it does, send the five queries from the controller to
the counter and store the responses in the controller
for later use.
These are the five queries:
Query Response
FNC? Functions setting; e.g. FREQ A
MEAC? Measurement control;
MTIME <number>,FRUN ON
TOUT <number>
INPA? Input-A settings;
TRGSLP POS
BUS? Bus interface commands;
MSR <number>,OUTM <number>
EOI OFF,SPR <number>
As you can see, the responses are the same commands
as you use for normal programming. So if you have to
change anything in a program made using bus learn, or
add functions which are not selectable from the front
panel, these program messages can easily be edited in
the controller.
NOTE: MEAC? and BUS? result in a response sent as
two lines, each terminated by the selected
separator.
NOTE: The counter will stop measuring until all lines of
the response have been read or the response
has been terminated.
NOTE: The query command must always be the last
command in a program message.
Terminating a Response
It is not necessary to read all output lines. Any program
message will terminate the response.
PM 6669 - OPERATORS MANUAL
GPIB-INTERFACE OPERATION

Programming Data Out

Any one of the queries used for Bus Learn can be used
to ask the counter about its current setting, see 'Bus
Learn' above.
What Happens When I
Switch to Local?
Switching to LOCAL causes the counter to adapt the set-
tings indicated on the display, see 'How to select func-
tion'. This means that the counter will never have set-
tings in LOCAL which are not possible to set via the
Max No.
of Char- front panel.
acters
When switching to remote again, the LOCAL-setting will
9
remain. Bus-functions like SRQ mask, output separator,
EOI, etc. will not be altered by switching to LOCAL and
20
back again.
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