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Series 4000 SCPI Programmers Reference Manual
3 Commands by Subsystem
3.1 IEEE-488.2 Commands
The IEEE-488.2 standard defines a set of common commands that perform functions such as
reset, self-test, and status operations. Common commands always begin with an asterisk (
*
),
are three characters in length, and may include one or more parameters. The command
keyword is separated from the first parameter by a blank space. Use a semicolon (
;
) to
separate multiple commands. IEEE488.2 commands are device commands that are common
to all devices according to the IEEE488.2 standard. Most of the commands are described in
detail in this section. The following common commands associated with the status structure are
related to the STATus Subsystem Commands section:
*CLS,*ESE,*ESE?,*ESR?
,*SRE,*SRE?,*STB?
See also figure Status Structure .
Table <%+%>: IEEE-488.2 commands
Mnemonic Name Description
*CLS
Clear status Clear all event registers and Error Queue
*ESE <value>
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 and clear the
Standard Event Register
*IDN?
Identification query Read the unit’s identification string
*OPC
Operation complete
command
Set the Operation Complete bit in the
Standard Event Register
*OPC?
Operation complete
query
Place a 1 into the output queue when all device operations have
been completed
*RCL <value>
Recall command Return the unit to the user-saved setup
*RST
Reset command Return the unit to the *RST default condition
*SAV <value>
Save default device
setting
Initialize the content of save/recall registers
*SDS <value>
Save default device
setting
Initialize the content of save/recall registers
*SRE <value>
Service request
enable command
Program the
Service Request Enable Register
*SRE?
Service request
enable query
Read the
Service Request Enable Register
*STB?
Status byte query Read the
Status Byte Register
*TST?
Self-test query Perform the unit’s self-test and return the result.
*WAI
Wait-to-continue
command
Wait until all previous commands are executed
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