The bits of the Standard Event Status Register are described as follows:
• Bit B0, Operation Complete — A set bit indicates that all pending selected device
operations are completed and the Model 2010 is ready to accept new commands. This
bit only sets in response to the *OPC? query command.
• Bit B1 — Not used
• Bit B2, Query Error (QYE) — A set bit indicates that you attempted to read data from
an empty Output Queue.
• Bit B3, Device-Dependent Error (DDE) — A set bit indicates that an instrument
operation did not execute properly due to some internal condition.
• Bit B4, Execution Error (EXE) — A set bit indicates that the Model 2010 detected an
error while trying to execute a command.
• Bit B5, Command Error (CME) — A set bit indicates that a command error has occurred.
Command errors include:
• IEEE-488.2 syntax error — Model 2010 received a message that does not follow the
defined syntax of the IEEE-488.2 standard.
• Semantic error — Model 2010 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) — A set bit indicates that the LOCAL key on the
Model 2010 front panel was pressed.
• Bit B7, Power ON (PON) — A set bit indicates that the Model 2010 has been turned off
and turned back on since the last time this register has been read.
B7 B6 B5 B4 B3 B2 B1 B0
PON URQ CME EXE DDE QYE — OPC
0/1 0/1 0/1 0/1 — 0/1
32
(2
5
)
16
(2
4
)
8
(2
3
)
4
(2
2
)
—
1
(2
0
)
Value: 1 = Event Bit Set
0 = Event Bit Cleared
Events: PON = Power On
URQ = User Request
CME = Command Error
EXE = Execution Error
DDE = Device-Dependent Error
QYE = Query Error
OPC = Operation Complete
Bit Position
Event
Decimal Weighting
Value 0/1 0/1
128
(2
7
)
64
(2
6
)
Note: Bits B8 through B15 are not shown since they are not used.
gure
-
Standard event status
register
Remote Operation 4-37
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