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13-4 Status Structure

Clearing registers and queues

When Model 6514 is turned on, the bits of all registers in the status structure are clear (reset

to 0) and the two queues are empty. Commands to reset the event and event enable registers, and

the error queue are listed in Table 13-1. In addition to these commands, any enable register can

be reset by sending the 0 parameter value with the individual command to program the register.

NOTE SYSTem:PRESet and *RST have no effect on status structure registers and queues.

Table 13-1

Common and SCPI commands — reset registers and clear queues

Commands Description Ref

To reset registers:

*CLS Reset all bits of the following event registers to 0: Note 1

Standard event register

Operation event register

Measurement event register

Questionable event register

STATus STATus subsystem:

:PRESet Reset all bits of the following enable registers to 0:

Operation event enable register

Measurement event enable register

Questionable event enable register

Note 1

To clear error queue:

*CLS Clear all messages from error queue Note 2

STATus STATus subsystem:

:QUEue Error queue:

:CLEar Clear messages from error queue Note 3

SYSTem SYSTem subsystem:

:ERRor Error queue:

:CLEar Clear messages from error queue Note 3

Notes:

1. The standard event enable register is not reset by STATus:PRESet or *CLS. Send the 0 parameter value

with *ESE to reset all bits of that enable register to 0 (see “Status Byte and Service Request commands”).

2. STATus:PRESet has no effect on the error queue.

3. Use either of the two clear commands to clear the error queue.

Keithley 6514 User Manual

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