Keithley 2657A, Reference Manual, Page: 586 / 805

Model 2657A High Power System SourceMeter® Instrument Reference Manual Section 7: TSP command reference
2657A-901-01 Rev. B/December 2012 7-273
A set bit indicates that the specified digital I/O line generated an action overrun when it was triggered to generate
an output trigger.
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 Not used Not applicable
B1
status.operation.instrument.digio.trigger_overrun.LINE1
Bit B1 decimal value: 2
B2 status.operation.instrument.digio.trigger_overrun.LINE2 Bit B2 decimal value: 4
B3
status.operation.instrument.digio.trigger_overrun.LINE3
Bit B3 decimal value: 8
B4 status.operation.instrument.digio.trigger_overrun.LINE4 Bit B4 decimal value: 16
B5 status.operation.instrument.digio.trigger_overrun.LINE5 Bit B5 decimal value: 32
B6 status.operation.instrument.digio.trigger_overrun.LINE6 Bit B6 decimal value: 64
B7 status.operation.instrument.digio.trigger_overrun.LINE7 Bit B7 decimal value: 128
B8 status.operation.instrument.digio.trigger_overrun.LINE8 Bit B8 decimal value: 256
B9 status.operation.instrument.digio.trigger_overrun.LINE9 Bit B9 decimal value: 512
B10 status.operation.instrument.digio.trigger_overrun.LINE10 Bit B10 decimal value: 1,024
B11 status.operation.instrument.digio.trigger_overrun.LINE11 Bit B11 decimal value: 2,048
B12 status.operation.instrument.digio.trigger_overrun.LINE12 Bit B12 decimal value: 4,096
B13 status.operation.instrument.digio.trigger_overrun.LINE13 Bit B13 decimal value: 8,192
B14
status.operation.instrument.digio.trigger_overrun.LINE14
Bit B14 decimal value: 16,384
B15 Not used Not applicable
As an example, to set bit B1 of the operation status digital I/O overrun enable register, set
status.operation.instrument.digio.trigger_overrun.enable =
status.operation.instrument.digio.trigger_overrun.LINE1
.
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 B1 and B10, set
operationRegister
to 1,026 (which is the sum of 2 + 1,024).
Bit B7 B6 B5 B4 B3 B2 B1 B0
Binary value 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1
Decimal 128 64 32 16 8 4 2 1
Weights
(2
7
) (2
6
) (2
5
) (2
4
) (2
3
) (2
2
) (2
1
) (2
0
)
Bit B15 B14 B13 B12 B11 B10 B9 B8
Binary value 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1
Decimal 32,768 16,384 8,192 4,096 2,048 1,024 512 256
Weights
(2
15
) (2
14
) (2
13
) (2
12
) (2
11
) (2
10
) (2
9
) (2
8
)
Example 1
operationRegister =
status.operation.instrument.digio.trigger_overrun.LINE1 +
status.operation.instrument.digio.trigger_overrun.LINE10
status.operation.instrument.digio.trigger_overrun.enable =
operationRegister Uses constants to set bit
B1 and bit B10 of the
operation status digital
I/O overrun enable
register.
Also see
Operation Status Registers (on page E-9)
status.operation.instrument.digio.* (on page 7-270)