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tected with this setting are: SYST:DATE, SYST:DATE:FORM, SYST:TIME,
SYST:TIME:DAYL, and SYST:TIME:FORM.
8.2.11
Status Commands
The status commands are used for querying and setting the state of the instru-
ment registers. For details on the operation of the status registers refer to the
SCPI standards.
8.2.11.1
*CLS
Clears the status registers.
Example: *CLS
This clears the error queue, Event Status Register, Operation Status Register,
Questionable Status Register, Alarm Status Register, and Measurement status
Register.
8.2.11.2
*ESE?
Returns the Event Status Enable Register. (See *ESE <num> command below.)
Example: *ESE?
Response: 189
8.2.11.3
*ESE <num>|MIN|MAX|DEF
This command sets the Event Status Enable Register. This register determines
which event bits of the Event Status Register affect the ESB Event Sum-
mary-Message Bit of the Status Byte Register. If any event bit of the Event Sta-
tus Register is set (1) while its corresponding mask bit of the Event Status
Enable Register is set, the ESB Event Summary-Message Bit of the Status Byte
Register will be set. The value of the <numeric_value> parameter is a number
from 0 to 255 that is the sum of the binary-weighted values of each mask bit.
The Event Status Register is described in Section below. The following exam-
ple causes the ESB bit in the Status Byte Register to be set whenever a com-
mand error or execution error occurs.
Example: *ESE 32
8.2.11.4
*ESR?
This query command returns the Event Status Register. It also clears the Event
Status Register and the ESB bit of the Status Byte Register. The value returned
indicates the condition of each of the eight bits of the register by adding the bi-
nary-weighted values of each bit. The meaning of each bit, when set (1) , is as
follows where 0 is the least significant and 7 is the most significant:
0
1
Operation complete (OPC). Execution of the last command is completed.
Request control (RQC). No function for this instrument.
8 Digital Communications Interface
Commands
121
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