9-2 Common Commands
Overview
Common commands are device commands that are common to all devices on the bus. These
commands are designated and defined by the IEEE-488.2 standard. Common commands are
listed in Table 9-1. Note that detailed information on the Common Commands to program and
read status registers is provided in Section 8.
Table 9-1
IEEE-488.2 common commands and queries
Mnemonic Name Description
*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
f
irmware revision levels of the unit.
*OPC Operation complete com-
mand
Set the operation complete bit in the standard event register after
all pending comma
nds have been executed.
*OPC? Operation complete query Places an ASCII “1” into the output queue when all pending
se
lected device operations have been completed.
*RCL <NRf> Recall command Returns the power supply to the user-saved setup.
*RST Reset command Returns the power supply to the *RST default conditions.
*SAV <NRf> Save command Saves the present setup as the user-saved setup.
*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[1] Trigger command Sends a battery channel (#1) bus trigger to the power supply.
*TRG2 Trigger command Sends a charger channel (#2) bus trigger to the power supply.
*TST? Self-test query Performs a checksum test on ROM and returns the result.
*WAI Wait-to-continue
command
Wait until all previous commands are executed.
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