AMETEK XG Family Programmable DC - Manual (Page 186)

Remote Operation
5-54 M370430-01 Rev E
SCPI Error/Event Queue
The error/event queue contains items that include a numerical and
textual description of the error or event. Querying for the full queue item
(for example, with SYSTem: ERRor [ :NEXT] ?) will return a response
with the following syntax:
, “Description>;“
The is a unique integer in the range [-32768,
32767]. All positive numbers are instrument-dependent. All negative
numbers are reserved by the SCPI standard with certain standard error/
event codes described in the SCPI 1999 standard document. The value,
zero, is also reserved to indicate that no error or event has occurred.
The second parameter of the full response is a quoted string containing
an followed by optional info> text. Each has a unique and fixed event_description> associated with it.
The maximum string length of plus
is 255 characters.
As errors and events are detected, they are placed in a queue. This queue
is first in, first out. If the queue overflows, the last error/event in the
queue is replaced with error:
-350,”Queue overflow
Any time the queue overflows, the least recent errors/events remain in
the queue, and the most recent error/event is discarded. The error queue
implemented in the XG is capable of holding 4 errors.
When the error queue is not empty the error queue bit in the Status
register will be set.
Querying For the Errors
Executing a query of the event queue will respond with the oldest error
currently on the queue. This error is removed. The response format is
discussed in the error/event queue description section.
Command:
[:]SYSTem:ERRor[:EVENt]?