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IEEE-488 Common Commands
IEEE-488 Common commands generally control overall instrument functions, such as reset, status,
and synchronization. All common commands consist of a three-letter mnemonic preceded by an
asterisk: *RST *IDN? *SRE 8.
*CLS
Clear status command. Clear Status Command. Clears the
clears the status byte and error queue. If *CLS immediately follows a program message terminator
(<NL>), then the output queue and the MAV bit are also cleared. Refer to
information.
Parameter
(none)
Clear event registers, status byte, and error queue: *CLS
*ESE <value>
*ESE?
Event status enable command and query. Sets the value in the
Status
group. Each set bit of the register enables a corresponding event. All enabled events are
logically ORed into the ESB bit of the status byte. The query reads the enable register. Refer to
Tutorial
for more information.
Parameter
A decimal value corresponding to the binary-weighted
sum of the register's bits.
Enable bits 3 and 4 in the enable register: *ESE 24
The value returned is the binary-weighted sum of all enabled bits in the register. For example, with
l
bit 2 (value 4) and bit 4 (value 16) set, the query returns +20.
Any or all conditions can be reported to the ESB bit through the enable register. To set the enable
l
register mask, write a decimal value to the register using *ESE.
*CLS does not clear the enable register, but does clear the
l
*ESR?
Event status event query. Reads and clears the
The event register is a read-only register, which latches all standard events. Refer to
for more information.
Keysight RP7970 & RP7980 Series Operating and Service Guide
5 SCPI Programming Reference
event registers
Typical Return
(none)
enable register
Typical Return
<bit value>
event
register.
event register
for the
Standard Event Status
in all register groups. Also
Status Tutorial
for more
for the
Standard Event
Status
group.
Status Tutorial
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