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Section 7: Command reference
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
2) and
Enable and transition registers
meanings:
Bit
Value
B0
Not used
B1
status.operation.instrument.digio.trigger_overrun.LINE1
B2
status.operation.instrument.digio.trigger_overrun.LINE2
B3
status.operation.instrument.digio.trigger_overrun.LINE3
B4
status.operation.instrument.digio.trigger_overrun.LINE4
B5
status.operation.instrument.digio.trigger_overrun.LINE5
B6
status.operation.instrument.digio.trigger_overrun.LINE6
B7
status.operation.instrument.digio.trigger_overrun.LINE7
B8
status.operation.instrument.digio.trigger_overrun.LINE8
B9
status.operation.instrument.digio.trigger_overrun.LINE9
B10
status.operation.instrument.digio.trigger_overrun.LINE10
B11
status.operation.instrument.digio.trigger_overrun.LINE11
B12
status.operation.instrument.digio.trigger_overrun.LINE12
B13
status.operation.instrument.digio.trigger_overrun.LINE13
B14
status.operation.instrument.digio.trigger_overrun.LINE14
B15
Not used
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 + 1024).
Bit
Binary value
Decimal
Weights
Bit
Binary value
Decimal
Weights
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
7-274
Model 2651A High Power System SourceMeter® Instrument Reference Manual
(on page E-18). The individual bits of this register have the following
B7
B6
B5
0/1
0/1
0/1
128
64
32
7
6
5
(2
)
(2
)
(2
)
B15
B14
B13
0/1
0/1
0/1
32,768
16,384
8,192
15
14
13
(2
)
(2
)
(2
)
Status register sets
Description
Not applicable
Bit B1 decimal value: 2
Bit B2 decimal value: 4
Bit B3 decimal value: 8
Bit B4 decimal value: 16
Bit B5 decimal value: 32
Bit B6 decimal value: 64
Bit B7 decimal value: 128
Bit B8 decimal value: 256
Bit B9 decimal value: 512
Bit B10 decimal value: 1024
Bit B11 decimal value: 2048
Bit B12 decimal value: 4096
Bit B13 decimal value: 8192
Bit B14 decimal value: 16,384
Not applicable
B4
B3
B2
0/1
0/1
0/1
16
8
4
4
3
2
(2
)
(2
)
(2
)
B12
B11
B10
0/1
0/1
0/1
4,096
2,048
1024
12
11
10
(2
)
(2
)
(2
)
Sets bit B1 and bit B10 of
the operation status
digital I/O overrun enable
register using constants.
2651A-901-01 Rev. A / March 2011
(on page E-
B1
B0
0/1
0/1
2
1
1
0
(2
)
(2
)
B9
B8
0/1
0/1
512
256
9
8
(2
)
(2
)
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Troubleshooting
