Keithley 6430 User Manual

Status Structure 14-7
Status byte and service request (SRQ)
Service request is controlled by two 8-bit registers; the Status Byte Register and the Service
Request Enable Register. Figure 14-3 shows the structure of these registers.
Table 14-2
Data format commands for reading status registers
Command Description Default
:FORMat:SREGister <name> Select data format for reading status registers:
<name> = ASCii Decimal format
HEXadecimal Hexadecimal format
OCTal Octal format
BINary Binary format
ASCii
ESB
OSB
ESB
*STB?
OSB*SRE
*SRE?
OR
(B6)
RQS
(B5)(B77)
(B5)(B6)
Serial Poll
Service
Request
Generation
(B7)
MSS
MAV
Status Summary Message
Read by Serial Poll
Read by *STB?
Status Byte
Register
OSB = Operation Summary Bit
MSS = Master Summary Status
RQS = Request for Service
ESB = Event Summary Bit
Mav = Message Available
QSB = Questionable Summary Bit
EAV = Error Available
MSB = Measurement Summary Bit
& = Logical AND
OR = Logical OR
Service
Request
Enable
Register
MAV
(B4)
(B4)
QSB
QSB
(B3)
(B3)
EAV
EAV
(B2)
(B2)
(B1)
(B1)
MSB
MSB
(B0)
(B0)
__
____
&
&
&
&
&
&
Fi
gure
14
-
3
Status byte and
service request
(SRQ)

Keithley 6430 Specifications

General

Brand	Keithley
Model	6430
Category	Measuring Instruments
Language	English