Keithley 708B Reference Manual page 452

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 1.30000e+02 (which is 130) is read as the value of the
condition register, the binary equivalent is 0000 0000 1000 0001. This value indicates that bit B1 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 B1 of the system summary status
register set 5, set status.system5.enable = status.system5.NODE57):
Bit Value
B0 Not used
B1
status.system5.NODE57
B2
status.system5.NODE58
B3
status.system5.NODE59
B4
status.system5.NODE60
B5
status.system5.NODE61
B6 status.system5.NODE62
B7
status.system5.NODE63
B8
status.system5.NODE64
B9-B14 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 B1 and B4, set enableRegister to 18 (which is the sum of 2 + 16).
Bit
Binary value
Decimal
Weights
Bit
Binary value
Decimal
Weights
Example 1
enableRegister = status.system5.NODE57 +
status.system5.NODE60
status.system2.enable = enableRegister
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
Not applicable
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
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 )
Sets BIT1 and BIT5 of the status system
enable register set 5 using constants.
B1 B0
> *
1 0
B0
0/1
1
0
(2 )
B8
0/1
256
8
(2 )
7-199