11-12 Status Structure Model 2700 Multimeter/Switch System User’s Manual
Status register sets
As shown in Figure 11-1, there are four status register sets in the status structure of the
Model 2700: Standard Event Status, Operation Event Status, Measurement Event Status,
and Questionable Event Status.
Register bit descriptions
Standard event register
The used bits of the Standard Event Register (Figure 11-4) are described as follows:
• Bit B0, Operation Complete (OPC) — Set bit indicates that all pending selected
device operations are completed and the Model 2700 is ready to accept new com
-
mands. This bit only sets in response to the *OPC? query command. See
Section 12 for details on *OPC and *OPC?.
Figure 11-4
Standard event status
* ESR ?
PON
(B7)
URQ
(B6)
CME
(B5)
EXE
(B4)
DDE
(B3)
QYE
(B2) (B1) (B0)
OR
Standard Event
Status Register
Standard Event
Status Enable
Register
PON = Power On
URQ = User Request
CME = Command Error
EXE = Execution Error
DDE = Device-Dependent Error
OPC
PON
(B7)
URQ
(B6)
CME
(B5)
EXE
(B4)
DDE
(B3)
QYE
(B2) (B1) (B0)
OPC
* ESE
* ESE ?
(B15 - B8)
(B15 - B8)
To Event
Summary
Bit (ESB) of
Status Byte
Register.
&
&
&
&
&
&
&
QYE = Query Error
OPC = Operation Complete
& = Logical AND
OR = Logical OR
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