Keithley 2651A, Справочное руководство

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Model 2651A High Power System SourceMeter® Instrument Reference Manual Section 7: Command reference
2651A-901-01 Rev. A / March 2011 7-313
Details
These attributes are used to read or write to the standard event status registers. Reading a status register
returns a value. The binary equivalent of the returned value indicates which register bits are set. The least
significant bit of the binary number is Bit B0, and the most significant bit is Bit B15. For example, if a value of
1.02
(which is 129) is read as the value of the condition register, the binary equivalent is
0000 0000 1000 0001. This value indicates that bit B0 and bit B7 are set.
B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
** > > > > > > > > > > > > > > *
0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1
* Least significant bit
** Most significant bit
For information about .condition, .enable, .event, .ntr, and .ptr registers, refer to Status register sets (on page E-
2) and Enable and transition registers (on page E-18). The individual bits of this register have the following
meanings:
Bit Value Description
B0
status.standard.OPERATION_COMPLETE
status.standard.OPC
Set bit indicates that all pending selected
instrument operations are completed and the
instrument is ready to accept new commands.
The bit is set in response to an
*OPC
command. The
opc()
function can be used in
place of the
*OPC
command.
Bit B0 decimal value: 1
B1 Not used Not applicable
B2
status.standard.QUERY_ERROR
status.standard.QYE
Set bit indicates that you attempted to read
data from an empty Output Queue.
Bit B2 decimal value: 4
B3
status.standard.DEVICE_DEPENDENT_ERROR
status.standard.DDE
Set bit indicates that an instrument operation
did not execute properly due to some internal
condition.
Bit B3 decimal value: 8
B4
status.standard.EXECUTION_ERROR
status.standard.EXE
Set bit indicates that the instrument detected an
error while trying to execute a command.
Bit B4 decimal value: 16
B5
status.standard.COMMAND_ERROR
status.standard.CME
Set bit indicates that a command error has
occurred. Command errors include:
IEEE Std 488.2 syntax error:
Instrument
received a message that does not follow the
defined syntax of the IEEE Std 488.2 standard.
Semantic error:
Instrument received a
command that was misspelled or received an
optional IEEE Std 488.2 command that is not
implemented.
GET error:
The instrument received a Group
Execute Trigger (GET) inside a program
message.
Bit B5 decimal value: 32
B6
status.standard.USER_REQUEST
status.standard.URQ
Set bit indicates that the LOCAL key on the
instrument front panel was pressed.
Bit B6 decimal value: 64