Section 8: TSP command reference
Model 2450 Interactive SourceMeter® Instrument Reference Manual
8-154
2450-901-01 Rev. B/September 2013
status.condition
This attribute stores the status byte condition register.
Type
TSP-Link accessible
Affected by
Where saved
Default value
Attribute (R)
Yes
Not applicable
Not saved
Not applicable
Usage
statusByte
= status.condition
statusByte
The status byte
Details
You can use this command to read the status byte, which is returned as a numeric value.
When an enabled status event occurs, a summary bit is set in this register to indicate the event occurrence. The
returned value can indicate that one or more status events occurred. If 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). See
(on page C-15) for additional information about reading bit values.
If you are using the GPIB, USB, or VXI-11 serial poll sequence of the Model 2450 to get the status
byte (also called a serial poll byte), B6 is the Request for Service (RQS) bit. If the bit is set, it
indicates that a serial poll (SRQ) has occurred. For additional detail, see
page C-13)
The meanings of the individual bits of this register are shown in the following table.
Bit
Decimal
value
Constant
When set, indicates the following has occurred:
0
1
status.MSB
An enabled measurement event
1
2
Not used
2
4
status.EAV
An error or status message is present in the Error Queue
3
8
status.QSB
An enabled questionable event
4
16
status.MAV
A response message is present in the Output Queue
5
32
status.ESB
An enabled standard event
6
64
status.MSS
An enabled summary bit of the status byte register is set
7
128
status.OSB
An enabled operation event
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
None