2606B System SourceMeter® Instrument Reference Manual
Section 7: TSP command reference
2606B-901-01 Rev. B / May 2018
7-251
Bit
Value
Description
B6
status.MASTER_SUMMARY_STATUS
status.MSS
Request Service (RQS)/Master Summary Status
(MSS). Depending on how it is used, bit B6 of the
status byte register is either the Request for Service
(RQS) bit or the Master Summary Status (MSS) bit:
When using the USB or VXI-11 serial poll
sequence of the 2606B to obtain the status
byte (serial poll byte), B6 is the RQS bit. The
set bit indicates that the Request Service
(RQS) bit of the status byte (serial poll byte) is
set and a service request (SRQ) has
occurred.
When using the
status.condition
register
command or the
*STB?
common command to
read the status byte, B6 is the MSS bit. Set bit
indicates that an enabled summary bit of the
status byte register is set.
Bit B6 decimal value: 64
B7
status.OPERATION_SUMMARY_BIT
status.OSB
Set summary bit indicates that an enabled operation
event has occurred.
Bit B7 decimal value: 128
In addition to the above constants, when more than one bit of the register is set,
statusByte
equals
the sum of their decimal weights. For example, if 129 is returned, bits B0 and B7 are set (1 + 128).
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
)
Example
statusByte = status.condition
print(statusByte)
Returns
statusByte
.
Sample output:
1.02
Converting this output (129) to its binary equivalent yields
1000 0001
.
Therefore, this output indicates that the set bits of the status byte condition register are presently B0 (MSS) and
B7 (OSB).
Also see
Status byte and service request (SRQ)
(on page E-13)
