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Error Messages
Query Error List
Release 2.1 121
Query Error List
An error number in the range [-499, -400] indicates that the output queue control of
the instrument has detected a problem with the message exchange protocol described
in IEEE 488.2, chapter 6. The occurrence of any error in this class causes the query
error bit (bit 2) in the Event Status Register to be set.
Table C.4 Query Error List
User Request Event
An error/event in the range [-699, -600] is used when the instrument wishes to report
a 488.2 user request event. This event also sets the user request bit (bit 6) of the
Standard Event Status Register.
Table C.5 User Request Event
Operation Complete Event
An error/event in the range [-899, -800] is used when the instrument wishes to report
a 488.2 operation complete event. This event occurs when an instrument’s
synchronization protocol, having been enabled by an *OPC command, completes all
selected pending operations. This event also sets the operation complete bit (bit 0) of
the Standard Event Status Register.
Table C.6 Operation Complete Event
Error
code
Error Message Description
-400 Query Error
This is the generic query error for the power supply, used only when the other
types of errors do not apply.
-410 Query INTERRUPTED
Generated when a new command was received before it could finish the query.
Error
code
Error Message Description
-600 User request
Error
code
Error Message Description
-800 Operation complete