11-2 Common Commands Model 6485 Picoammeter Instruction Manual
Common Commands
Common commands (summarized in Table 11-1) 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 11-1
IEEE-488.2 common commands and queries
Mnemonic Name Description Ref
*CLS Clear status Clears all event registers and error queue. Section 10
*ESE <NRf> Event enable command Program the standard event enable register. Section 10
*ESE? Event enable query Read the standard event enable register. Section 10
*ESR? Event status register query Read the standard event enable register and clear
it.
Section 10
*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 model number of any installed options.
*RCL <NRf> Recall command Returns Model 6485 to the user-saved setup. C
*RST Reset command Returns Model 6485 to the *RST default
conditions.
D
*SAV <NRf> Save command Saves the present setup as the user-saved setup. C
*SRE <NRf> Service request enable command Programs the service request enable register. Section 10
*SRE? Service request enable query Reads the service request enable register. Section 10
*STB? Status byte query Reads the status byte register. Section 10
*TRG Trigger command Sends a bus trigger to Model 6485. E
*TST? Self-test query Performs a checksum test on ROM and returns
the result.
F
*WAI Wait-to-continue command Wait until all previous commands are executed. G
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