Keithley 2280 Series - Page 441

Appendix D: Status model Series 2280 Precision DC Power Supply Reference Manual
D-8 077085503 / March 2019
Figure 123: Series 2280 Status Byte Register
The bits of the Status Byte Register are described in the following table:
Bit
Decimal
value
Bit name
When set, indicates the following
has occurred:
0
1
Measurement summary bit (MSB)
An enabled measurement event
1
2
Not used
Not applicable
2
4
Error available (EAV)
An error is present in the error queue
(warning and information messages do
not affect this bit)
3
8
Questionable summary bit (QSB)
An enabled questionable event
4
16
Message available (MAV)
A response message is present in the
output queue
5
32
Event summary bit (ESB)
An enabled standard event
6
64
Request for service (RQS)/Master summary
status (MSS)
An enabled summary bit of the Status
Byte Register is set; depending on
how it is used, this is either the
Request for Service (RQS) bit or the
Master Summary Status (MSS) bit
7
128
Operation summary bit (OSB)
An enabled operation event