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Appendix
A
SCPl
Error
Messages
A.4
Query
Errors
The error codes,
[-499
and
-4001,
indicate that the output control queue of the device has encountered errors related to the
message exchange control protocol. When these errors take place, bit
2
of the event status register of the device is set.
Errors take place when the following events take place.
Reading from the output queue was attempted in the absence of output.
The data of the output queue has been lost.
Table
A-4
Error
Messages
of Query Errors
Code Message
Error
Detection Condition
-4
10
Query INTERRUPTED
Before the device finishes sending a response message, an interrupt by a new
command has taken place.
Example:
*TRG
was sent before sending of a response has fully been
completed.
-320
Query UNTERMINATED
A
query to correspond to the response message to be read has not been sent.
Or the query has completely been terminated.
-430
Query DEADLOCKED
Data greater in size than the storage area has been attempted to be stored into
the buffer.
Example:
The device is unable to continue measurement because the input
and output buffers are both full.