Keithley 2280 Series Reference Manual page 443

Appendix D: Status model
Standard Event Register
The Standard Event Register records eight types of events that could occur in the instrument. See the
following figure and table below it for details.
Decimal
Bit value
0
1
2
3
4 16
5 32
6 64
7 128
D-10
Figure 124: Series 2280 Standard Event Register
Bit name
1 Operation complete (OPC)
2 Request control (RQC). Not used.
4 Query error (QYE)
8 Device error (DDE)
Execution error (EXE)
Command error (CME)
User request (URQ)
Power on (PON)
Series 2280 Precision DC Power Supply Reference Manual
When set, indicates the following has
occurred:
All pending selected device operations are
completed and the Series 2280 is ready to accept
new commands.
NA
An attempt was made to read data from an empty
output queue.
A device error has been detected.
An error was detected while the instrument was
trying to execute a command.
A command error has occurred. See information
following this table for descriptions of command
errors.
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.
The instrument has been turned off and turned
back on since the last time this register was read.
077085503 / March 2019