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2600AS-901-01 Rev. B / September 2008
Appendix C: Status Model
Series 2600A System SourceMeter® Instruments Reference Manual
Standard Event Register
The bits used in the Standard Event Register (shown in
) are described as follows:
•
Bit B0, Operation Complete
(OPC): Set bit indicates that all pending selected device
operations are completed and the SourceMeter instrument is ready to accept new
commands. The bit is set in response to an *OPC command. The ICL function
opc()
can
be used in place of the *OPC command. See
for details on *OPC.
•
Bit B1:
Not used.
•
Bit B2, Query Error (QYE):
Set bit indicates that you attempted to read data from an empty
Output Queue.
•
Bit B3, Device-Dependent Error (DDE):
Set bit indicates that an instrument operation did
not execute properly due to some internal condition.
•
Bit B4, Execution Error (EXE):
Set bit indicates that the SourceMeter detected an error
while trying to execute a command.
•
Bit B5, Command Error (CME):
Set bit indicates that a command error has occurred.
Command errors include:
•
IEEE-488.2 syntax error: The SourceMeter instrument received a message that does not
follow the defined syntax of the IEEE-488.2 standard.
•
Semantic error: SourceMeter instrument received a command that was misspelled or
received an optional IEEE-488.2 command that is not implemented.
•
The instrument received a Group Execute Trigger (GET) inside a program message.
•
Bit B6, User Request (URQ):
Set bit indicates that the LOCAL key on the SourceMeter
instrument front panel was pressed.
•
Bit B7, Power ON (PON):
Set bit indicates that the SourceMeter instrument has been
turned off and turned back on since the last time this register has been read.
Commands to program and read the register are summarized in
, and bits are
summarized in