Keithley 2182, Руководство пользователя, Страница: 252 / 339

15-14 Additional SCPI Commands
:PRESet command
:PRESet
:STATus:PRESet Return registers to default conditions
Description
When this command is sent, all bits of the following registers are cleared to zero (0):
• Questionable Event Enable Register
• Measurement Event Enable Register
• Operation Event Enable Register
NOTE Registers not included in the above list are not affected by this command.
:QUEue commands
[:NEXT]?
:STATus:QUEue[:NEXT]? Read Error Queue
Description
As error and status messages occur, they are placed into the Error Queue. This query
command is used to read those messages.
The Error Queue is a first-in, first-out (FIFO) register. Each time you read the queue, the
“oldest” message is read and that message is then removed from the queue. The queue will hold
up to ten messages. If the queue becomes full, the “350, Queue Overflow” message will occupy
the last memory location in the register. On power-up, the Error Queue is empty. When the Error
Queue is empty, the “0, No error” message is placed in the Error Queue.
The messages in the queue are preceded by a number. Negative (–) numbers are used for SCPI
defined messages, and positive (+) numbers are used for Keithley defined messages. The
messages are listed in
Appendix B .
After this command is sent and the Model 2182 is addressed to talk, the “oldest” message in
the queue is sent to the computer.
NOTE The :STATus:QUEue[:NEXT]? query command performs the same function as the
:SYSTem:ERRor? query command (see System subsystem).
:CLEar
:STATus:QUEue:CLEar Clear Error Queue
Description
This action command is used to clear the Error Queue of messages.