11-2
Common Commands
Model 6485 Picoammeter Instruction Manual
Common Commands
Common commands (summarized in
) 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.
*ESE <NRf>
Event enable command
Program the standard event enable register.
*ESE?
Event enable query
Read the standard event enable register.
*ESR?
Event status register query
Read the standard event enable register and clear
it.
*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.
*SRE?
Service request enable query
Reads the service request enable register.
*STB?
Status byte query
Reads the status byte register.
*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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