Keithley 708B Reference Manual page 444

Models 707B and 708B Switching Matrix Reference Manual
Details
Although the status logical instrument reset affects these attributes, a system reset does not.
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 decimal value, but are returned as a decimal 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 1.29000e+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
** >
0 0
* Least significant bit
** Most significant bit
Assigning a value to this attribute enables one or more status events. When an enabled status event occurs, a
summary bit is set in the appropriate system summary register. The register and bit that is set depends on the
TSP-Link node number assigned to this instrument. The individual bits of the status byte condition register can
be set to the following described values (for example, to set the enable bit to B0 of the system summary status
register, set status.system.enable = status.system.enable.EXT):
Bit Value
B0 status.system.EXTENSION_BIT
status.system.EXT
B1 status.system.NODE1
B2 status.system.NODE2
B3
status.system.NODE3
B4
status.system.NODE4
B5 status.system.NODE5
B6 status.system.NODE6
B7 status.system.NODE7
B8
status.system.NODE8
B9
status.system.NODE9
B10 status.system.NODE10
B11 status.system.NODE11
B12 status.system.NODE12
B13 status.system.NODE13
B14
status.system.NODE14
B15 Not used
In addition to the above constants, enableRegister can be set to the decimal 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 B11 and B14, set enableRegister to 18,432 (which is the sum of 2048 + 16,384).
Bit
Binary value
Decimal
Weights
Bit
Binary value
Decimal
Weights
707B-901-01 Rev. A / August 2010
B13 B12 B11 B10
> > > >
0 0 0 0
B7 B6
0/1 0/1
128 64
7
(2 ) (2
B15 B14
0/1 0/1
32,768 16,384
15
(2 ) (2
B9 B8 B7 B6
> > > >
0 0 1 0
Description
Bit 0 decimal value: 1
Bit 1 decimal value: 2
Bit 2 decimal value: 4
Bit 3 decimal value: 8
Bit 4 decimal value: 16
Bit 5 decimal value: 32
Bit 6 decimal value: 64
Bit 7 decimal value: 128
Bit 8 decimal value: 256
Bit 9 decimal value: 512
Bit 10 decimal value: 1024
Bit 11 decimal value: 2048
Bit 12 decimal value: 4096
Bit 13 decimal value: 8192
Bit 14 decimal value: 16384
Not applicable
B5 B4
0/1 0/1
32 16
6 5 4
) (2 ) (2 )
B13 B12
0/1 0/1
8,192 4,096
14 13 12
) (2 ) (2 )
Section 7: Command reference
B5 B4 B3 B2
> > > >
0 0 0 0
B3 B2 B1
0/1 0/1 0/1
8 4 2
3 2 1
(2 ) (2 ) (2 )
B11 B10 B9
0/1 0/1 0/1
2,048 1024 512
11 10 9
(2 ) (2 ) (2 )
B1 B0
> *
0 1
B0
0/1
1
0
(2 )
B8
0/1
256
8
(2 )
7-191