Keithley 2657A User Manual

Section 7: TSP command reference Model 2657A High Power System SourceMeter® Instrument Reference Manual
7-266 2657A-901-01 Rev. B/December 2012
Details
These attributes read or write the operation 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 2.04800e+04 (which is 20,480) is read as the value of the condition register, the binary
equivalent is 0101 0000 0000 0000. This value indicates that bit B14 (PROGRAM_RUNNING) and bit B12 (USER)
are set.
B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
** > > > > > > > > > > > > > > *
0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0
* Least significant bit
** Most significant bit
For information about .condition, .enable, .event, .ntr, and .ptr registers, refer to Status register set contents (on
page E-1) and Enable and transition registers
(on page E-19). The individual bits of this register are defined in
the following table.
Bit Value Description
B0
status.operation.CALIBRATING
status.operation.CAL
Set bit indicates that the summary bit of the
status.operation.calibrating register has been
set.
Bit B0 decimal value: 1
B1-B2 Not used Not applicable
B3
status.operation.SWEEPING
status.operation.SWE
Set bit indicates that the summary bit from the
status.operation.sweeping register is set.
Bit B3 decimal value: 8
B4
status.operation.MEASURING
status.operation.MEAS
Set bit indicates that the summary bit of the
status.operation.measuring register is set.
Bit B4 decimal value: 16
B5-B9 Not used Not applicable
B10
status.operation.TRIGGER_OVERRUN
status.operation.TRGOVR
Set bit indicates that the summary bit from the
status.operation.trigger_overrun register is set.
Bit B10 decimal value: 1,024
B11
status.operation.REMOTE_SUMMARY
status.operation.REM
Set bit indicates that the summary bit of the
status.operation.remote register is set.
Bit B11 decimal value: 2,048
B12
status.operation.USER
Set bit indicates that the summary bit from the
status.operation.user register is set.
Bit B12 decimal value: 4,096
B13
status.operation.INSTRUMENT_SUMMARY
status.operation.INST
Set bit indicates that the summary bit from the
status.operation.instrument register is set.
Bit B13 decimal value: 8,192
B14
status.operation.PROGRAM_RUNNING
status.operation.PROG
Set bit indicates that a command or program is running.
Bit B14 decimal value: 16,384
B15 Not used Not applicable
As an example, to set bit B12 of the operation status enable register, set status.operation.enable =
status.operation.USER.
In addition to the above constants, operationRegister can be set to the numeric equivalent of the bit to set.
To set more than one bit of the register, set operationRegister to the sum of their decimal weights. For
example, to set bits B12 and B14, set operationRegister to 20,480 (which is the sum of 4,096 + 16,384).

Keithley 2657A Specifications

General

Brand	Keithley
Model	2657A
Category	Measuring Instruments
Language	English