Keithley 2657A

A
ppendix E: Status model Model 2657A High Power System SourceMeter® Instrument Reference Manual
E-16 2657A-901-01 Rev. B/December 2012
Figure 156: Status byte and service request (SRQ)
Service
Request
Enable
Register
Status Summary Message
Read by Serial Poll
Read by *STB?
or print(status.condition)
OSB = Operation Summary Bit
RQS = Request for Service
MSS = Master Summary Status
Mav = Message Available
ESB = Event Summary Bit
EAV = Error Available
QSB = Questionable Summary Bit
MSB = Measurement Summary Bit
& = Logical AND
OR = Logical OR
OR
&
&
&
&
&
&
*SRE or OSB
(B5)(B6)(B7)
MAV
(B4)
QSB
(B3)
EAV
(B2) (B1) (B0)
__
MSB
*STB?
Serial Poll
Service
Request
Generation
(B5)
MAV
(B4)
QSB
(B3)
EAV
(B2) (B1)
MSB
(B0)
Status Byte
Register
OSB
(B6)
RQS
(B7)
SSB
SSB
&
MSS
ESB
ESB
SSB = System Summary Bit
Read by *SRE?
or print(status.request_enable)
status.request_enable