Register Bit Descriptions - Keithley 6430 Instruction Manual

Status register sets
As shown in Figure 14-1, there are four status register sets in the status structure of the
SourceMeter: Standard Event Status, Operation Event Status, Measurement Event Status, and
Questionable Event Status.
NOTE

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
*ESR?
Standard event
status
OR
To Event
*ESE
Summary Bit
*ESE?
(ESB) of Status
Byte Register
(Figure 14-3)
See Appendix B for details on which register bits are set by specific error and status
conditions.
Bit B0, Operation Complete — Set bit indicates that all pending selected device oper-
ations are completed and the SourceMeter is ready to accept new commands. This bit
only sets in response to the *OPC? query command. See Section 15 for details on
*OPC and *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 opera-
tion did not execute properly due to some internal condition.
— PON URQ
(B15 - B8) (B7) (B6)
&
&
— PON URQ
(B15 - B8) (B7) (B6)
PON = Power On
URQ = User Request
CME = Command Error
EXE = Execution Error
CME EXE DDE QYE
(B5) (B4) (B3) (B2) (B1)
&
&
&
&
CME EXE DDE QYE
(B5) (B4) (B3) (B2) (B1)
DDE = Device-Dependent Error
QYE = Query Error
OPC = Operation Complete
& = Logical AND
OR = Logical OR
Status Structure
— OPC Standard Event
(B0) Status Register
&
— OPC Standard Event Status
(B0) Enable Register
14-11