Fluke NORMA 4000 Operators, User Manual, Page: 158 / 184

Remote Control
Users Guide
5-8
Query Error
An <error/event 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 will cause
the query error bit (bit 2) in the event status register (IEEE 488. 2, section 11.5.1) to be set.
These errors correspond to message exchange protocol errors described in IEEE 488. 2,
section 6.5. One of the following is true:
•
An attempt is being made to read data from the output queue when no output is
either present or pending;
•
Data in the output queue has been lost.
•
Events that generate query errors shall not generate command errors, execution
errors, or device-specific errors; see the other error definitions in this section.
Error Number Error String [description/explanation/examples]
-400 Query error[This is the generic query error for devices that cannot detect more specific
errors. This code indicates only that a Query Error as defined in IEEE 488.2,
11.5.1.1.7and 6.3 has occurred.]
-410 Query INTERRUPTED[Indicates that a condition causing an INTERRUPTED Query
error occurred (see IEEE 488.2, 6.3.2.3); for example, a query followed by DAB or GET
before a response was completely sent.]
-420 Query UNTERMINATED[Indicates that a condition causing an UNTERMINATED Query
error occurred (see IEEE 488.2, 6.3.2.2); for example, the device was addressed to talk
and an incomplete program message was received.]
-430 Query DEADLOCKED[Indicates that a condition causing an DEADLOCKED Query error
occurred (see IEEE 488.2, 6.3.1.7); for example, both input buffer and output buffer are
full and the device cannot continue.]
-440 Query UNTERMINATED after indefinite response [Indicates that a query was received in
the same program message after a query requesting an indefinite response was
executed (see IEEE 488.2, 6.5.7.5).]