12-2 Common Commands Model 2750 Multimeter/Switch System User’s Manual
Common commands (summarized in Table 12-1) are device commands that are common
to all devices on the bus. These commands are designated and defined by the IEEE-488.2
standard.
Table 12-1
IEEE-488.2 common commands and queries
Mnemonic Name Description Ref
*CLS Clear status Clears all event registers and error queue. Sec 11
*ESE <NRf> Event enable command Program the standard event enable register. Sec 11
*ESE? Event enable query Read the standard event enable register. Sec 11
*ESR? Event status register query Read the standard event enable register and
clear it.
Sec 11
*IDN? Identification query Returns the manufacturer, model number, serial
number, and firmware revision levels of the
unit.
A
*OPC Operation complete command Set the operation complete bit in the standard
event register after all pending commands
have been executed.
B
*OPC? Operation complete query Places an ASCII “1” into the output queue when
all pending selected device operations have
been completed.
B
*OPT? Option query Returns the model numbers of the switching
modules installed in the Model 2750. Returns
“NONE” if a slot is empty.
C
*RCL <NRf> Recall command Returns Model 2750 to the user-saved setup (0,
1, or 2).
D
*RST Reset command Returns Model 2750 to the *RST default
conditions.
E
*SAV <NRf> Save command Saves the present setup as the user-saved setup
(0, 1, or 2).
D
*SRE <NRf> Service request enable
command
Programs the service request enable register. Sec 11
*SRE? Service request enable query Reads the service request enable register. Sec 11
*STB? Status byte query Reads the status byte register. Sec 11
*TRG Trigger command Sends a bus trigger to Model 2750. F
*TST? Self-test query Performs a checksum test on ROM and returns
the result.
G
*WAI Wait-to-continue command Wait until all previous commands are executed. H
2750-900-01.book Page 2 Wednesday, August 3, 2011 7:56 AM
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