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14-4 Status Structure Models 2500 and 2502 User’s Manual

Clearing registers and queues

When the Model 2500 is turned on, the bits of all registers in the status structure are

cleared (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 14-1. In addition to these com-

mands, any enable register can be reset by sending the 0 parameter value with the individ-

ual command to program the register.

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

queues.

Table 14-1

Common and SCPI commands to reset registers and clear queues

Commands Description Ref.

To Reset Registers:

*CLS

:STATus:PRESet

To Clear Error Queue:

*CLS

:STATus:QUEue:CLEar

Reset all bits of the following event registers to 0:

Standard Event Register

Operation Event Register

Measurement Event Register

Questionable Event Register

Reset all bits of the following enable registers to 0:

Operation Event Enable Register

Measurement Event Enable Register

Questionable Event Enable Register

Clear all messages from Error Queue

Clear messages from Error Queue

Note 1

Note 2

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,”

page 14-10.

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

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

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Keithley 2500 User Manual

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