Keithley 2000, User Manual, Page: 201 / 280

SCPI Command Reference 5-63
:VERSion? command
:VERsion?
:SYSTem:VERSion? Read SCPI version
Description
This query command is used to read the version of the SCPI standard being
used by the Model 2000. Example code:
1991.0
The above response message indicates the version of the SCPI standard.
:ERRor? command
:ERRor?
:SYSTem:ERRor? 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 that can hold up to 10 messages. Every time
you read the queue, the “oldest” message is read and that message is then re-
moved from the queue.
If the queue becomes full, the message “350, Queue Overflow” occupies the
last memory location in the register On power-up, the queue is empty. When
the Error Queue is empty, the message “0, No error” 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. Appendix B lists the messages.
NOTE The :SYSTem:ERRor? query command performs the same func-
tion as the :STATus:QUEue? query command (see STATus sub-
system).