Figure 5-16 Status Byte Register - Keithley 7001 Instruction Manual

Bit 5, Event Summary Bit (ESB)  Set bit indicates that an enabled standard event has oc-
curred. The event can be identified by reading the Standard Event Status Register using the
*ESE? query command (see paragraph 5.10.2).
Bit 6, Master Summary Status (MSS) / Request Service (RQS)  Set bit indicates that one
or more enabled conditions have occurred to generate a service request (SRQ). Note that the
IEEE-488.1 standard designates Bit 6 as the RQS bit and is read by performing a Serial Poll.
Bit 7, Operation Summary Bit (OSB)  Set bit indicates that an enabled operation event has
occurred. The event can be identified by reading the Operation Event Status Register using the
following SCPI command structure:
:STATus:OPERation?
See paragraph 5.16 for details.
Programming
10
example
20
30
40
Figure 5-16
Status Byte Register
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OUTPUT 707; "*SRE?"
ENTER 707; A$
PRINT A$
END
Bit Position
Event
Decimal Weighting
Value
Value : 1 = Event Bit Set
Events : OSB = Operation Summary Bit
! Request contents of register
! Address 7001 to talk
! Display value of register
B7 B6 B5 B4 B3
MSS,
OSB ESB MAV QSB EAV
RQS
128 64 32 16 8
7 6 5 4 3
(2 ) (2 ) (2 ) (2 ) (2 )
0/1 0/1 0/1 0/1 0/1
0 = Event Bit Cleared
MSS = Master Summary Status
RQS = Request Service
ESB = Event Summary Bit
MAV = Message Available
QSB = Questionable Summary Bit
EAV = Error Available
IEEE-488 Reference
B2 B1 B0
4
2
(2 )
0/1
5-59