Programming
3
Keysight 53147A/148A/149A Operating and Programming Guide
175
Status Byte Register and Service Request Enable Register
Figure 3-13
Status Byte and Service Request Enable
Status Byte Register
The Status Byte Register is the summary-level register in the status reporting
structure. It contains summary bits that monitor activity in the other status
registers and queues as shown in
. The Status Byte Register is a live
register—its summary bits are set TRUE or FALSE (one or zero) by the presence or
absence of the condition which is being summarized.
The Status Byte Register can be read with either a serial poll or the
*STB?
query,
but it is altered only when the state of the overlying status data structures is
altered. The entire Status Byte Register can be cleared by sending just the
*CLS
command to the instrument in a program message.
lists the Status Byte Register bits and briefly describes each bit.
0
1
EAV
QSB
MAV
ESB
RQS /MSS
OSB
SRQ Interrupt
to Computer
Status Byte
Register
&
&
&
&
&
&
&
0
1
2
3
4
5
7
Service Request
Enable Register
Operation Status
Register Group
Service
Request
Generation
Questionable
Data
Status Register
Group
Logical OR
(Logical AND)
Standard Event
Status Register
Group
Status of
Output Queue
Error/Event
Queue
Содержание 53147A
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