SCPI Error Messages
Device-Specific Errors (-300…)
Miscellaneous Errors (+300... and +500..)
Licensing and Self-test Errors (+600...)
Miscellaneous Errors (+800...)
The instrument returns error messages in accordance with the SCPI standard.
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Up to 20 errors can be stored in the instrument's error queue. Each remote interface I/O session
(GPIB, USB, VXI-11, Telnet/Sockets) has its own interface-specific error queue. Errors appear in the
error queue of the I/O session that caused the error. For example, if an error was generated by a com-
mand sent over GPIB, send
from GPIB to read the error queue. Errors generated by
instrument hardware are broadcast to all I/O sessions.
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The instrument beeps each time an error is generated (unless disabled by
).
The front panel
Error
annunciator turns on when one or more errors are in the error queue.
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A special global error queue holds all power-on and hardware-related errors (for example, over-
temperature).
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Error retrieval is first-in-first-out (FIFO), and errors are cleared as you read them. When you have read
all of the interface-specific errors, the errors in the global error queue are retrieved. When you have
read all errors from the interface-specific and global error queues, the
Error
annunciator turns off.
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If more than 20 errors have occurred, the most recent error stored in the queue is replaced with -
350,"Queue overflow". No additional errors are stored until you remove errors from the queue. If no
errors have occurred when you read the error queue, the instrument responds with +0,"No error".
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The front panel reports errors from all I/O sessions and the global error queue. To read the error queue
from the front panel, press
Help > View remote command error queue
.
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Error conditions are also summarized in the Status Byte Register. For more information on the SCPI
Status System, see
.
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The interface-specific error queues are cleared by the
(Clear Status) command and when power is
cycled. All errors are cleared when you read the error queue. The error queue is not cleared by a Fact-
ory Reset (
).
SCPI Programming Reference
460
Keysight True
volt
Series Operating and Service Guide