IEEE 488.2 Common Commands
*CLS
Clear Status Command. Clears the event registers in all register groups. Also 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 Status Tutorial for more information.
Parameter Typical Return
(none) (none)
Clear Event register bits, Status byte, and Error queue: *CLS
*ESE <value>
*ESE?
Event Status Enable Command and Query. Enables bits in the enable register for the Standard Event
Status group. A 1 in the bit position enables the corresponding event. The selected bits are then
reported to the ESB bit of the Status Byte Register. The query reads the enable register and returns a
decimal value which corresponds to the binary-weighted sum of all bits set in the register. Refer to
Status Tutorial for more information.
Parameter Typical Return
A decimal value that corresponds to the binary-weighted sum of the bits
in the register.
<bitvalue>
Enable bit3 and 4 in the enable register: *ESE 24
l Any or all of the enabled events of the Standard Event Status Event Register are logically ORed to
cause the Event Summary Bit (ESB) of the Status Byte Register to be set.
l *CLS does not clear the enable register, but does clear the event register.
l The value returned is the binary-weighted sum of all bits set in the register.
*ESR?
Event Status Register Query. Queries the event register for the Standard Event Status group. The
event register is a read-only register, which stores (latches) all standard events. Refer to Status
Tutorial for more information.
Parameter Typical Return
(none) <bitvalue>
Read event status enable register: *ESR?
5 SCPI Programming Reference
248 Keysight N6700C Operating and Service Guide
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