Section 7: TSP command reference Model 2657A High Power System SourceMeter® Instrument Reference Manual
7-322 2657A-901-01 Rev. B/December 2012
Details
In an expanded system (TSP-Link), these attributes are used to read or write to the system summary registers.
They are set using a constant or a numeric value, but are returned as a numeric value. The binary equivalent of
the value indicates which register bits are set. In the binary equivalent, the least significant bit is bit B0, and the
most significant bit is bit B15. For example, if a value of 1.30000e+02 (which is 130) is read as the value of the
condition register, the binary equivalent is 0000 0000 1000 0010. This value indicates that bit B1 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 1 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 Not used Not applicable
B1
status.system5.NODE57
Bit B1 decimal value: 2
B2
status.system5.NODE58
Bit B2 decimal value: 4
B3
status.system5.NODE59
Bit B3 decimal value: 8
B4
status.system5.NODE60
Bit B4 decimal value: 16
B5
status.system5.NODE61
Bit B5 decimal value: 32
B6
status.system5.NODE62
Bit B6 decimal value: 64
B7
status.system5.NODE63
Bit B7 decimal value: 128
B8
status.system5.NODE64
Bit B8 decimal value: 256
B9-B15 Not used Not applicable
As an example, to set bit B1 of the system summary 5 enable register, set status.system5.enable =
status.system5.NODE57.
In addition to the above constants, enableRegister can be set to the numeric equivalent of the bit to set. To
set more than one bit of the register, set enableRegister to the sum of their decimal weights. For example, to
set bits B1 and B4, set enableRegister to 18 (which is the sum of 2 + 16).
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
enableRegister = status.system5.NODE57 +
status.system5.NODE60
status.system2.enable = enableRegister
Uses constants to set bits B1 and B4 of
the system summary 5 enable register.
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