D-16
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2600S-901-01 Rev. C / January 2008
Appendix D: Status Model
Series 2600 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 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
•
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 received a message that does not follow
the defined syntax of the IEEE-488.2 standard.
• Semantic error — SourceMeter 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
front panel was pressed.
•
Bit B7, Power ON (PON)
—
Set bit indicates that the SourceMeter 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
.
