A-24 Appendix PLZ-U
Execution errors
An <error/event number> in the range [-299, -200] indicates that an error has been
detected by the instrument's execution control block. The occurrence of any error in
this class shall cause the execution error bit (bit 4) in the event status register to be
set.
Device-specific errors
An <error/event number> in the range [-399, -300] or [1, 32767] indicates that the
instrument has detected an error other than a command error, query error, or execu-
tion error. A part of the operation of the device did not complete correctly probably
due to a hardware or firmware malfunction. These codes are also used for self-test
response errors. The occurrence of any error in this class should cause the device-
specific error bit (bit 3) in the event status register to be set.
Query errors
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 proto-
col described in IEEE 488.2, chapter 6. The occurrence of any error in this class
shall cause the query error bit (bit 2) in the event status register to be set.
Error Code Error Message Description
-140 Character data error This error is generated when parsing a character data element.
-150 String data error This error is generated when parsing a string data element.
-160 Block data error This error is generated when parsing a block data element.
-170 Expression error This error is generated when parsing an expression data element.
-180 Macro error The parser recognized a data element different than one allowed.
Error Code Error Message Description
-200 Execution error (generic) This is a generic syntax error for this device.
Error Code Error Message Description
-300
Device-specific error
(generic)
Indicates that this device could not finish the operation due to some
condition of the device.
-350 Queue overflow
A specific code entered into the queue in lieu of the code that caused
the error. This code indicates that there is no room in the queue and an
error occurred but was not recorded.
Error Code Error Message Description
-400 Query error (generic)
This is the generic query error for devices that cannot detect more spe-
cific errors.
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