Models 2500 and 2502 User’s Manual Status Structure 14-11
Status register sets
As shown in Figure 14-1, there are four status register sets in the status structure of the
Model 2500: Standard Event Status, Operation Event Status, Measurement Event Status,
and Questionable Event Status.
NOTE See Appendix B for details on which register bits are set by specific error and
status conditions.
Register bit descriptions
Standard event register
The used bits of the standard event register (shown in Figure 14-4) are described as
follows:
Figure 14-4
Standard event status
DDE
(B3)
QYE
(B2)
—
(B1)
OPC
(B0)
EXE
(B4)
CME
(B5)
URQ
(B6)
PON
(B7)
—
(B15 - B8)
Standard
Event Status
Enable
Register
&
&
&
&
&
&
OR
To Event
Summary Bit
(ESB) of Status
Byte Register
(Figure 14-3)
PON = Power On
URQ = User Request
CME = Command Error
EXE = Execution Error
*ESE
*ESE?
&
DDE
(B3)
QYE
(B2)
—
(B1)
OPC
(B0)
EXE
(B4)
CME
(B5)
URQ
(B6)
PON
(B7)
—
(B15 - B8)
Standard
Event Status
Register
*ESR?
DDE = Device-Dependent Error
QYE = Query Error
OPC = Operation Complete
&= Logical AND
OR = Logical OR
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