Anritsu MT9812B, Operation Manual, Page: 97 / 144

5-29
Remote Control
5
(4) Clearing the status byte register using a
∗
CLS common com-
mand
The
∗
CLS common command clears all status structures, except the output
queue and MAV summary message (i.e., event registers and queues), and
the corresponding summary messages.
Issuing a
∗
CLS command after the <PROGRAM MESSAGE TERMINA-
TOR> element or before the <Query MESSAGE UNIT> element clears all
status bytes. With this method, all unread messages in the output queue are
cleared and the MAV message becomes False. When replying to the
∗
STB?, the MSS message becomes False, too. Values of enable registers
are not affected by
∗
CLS.
7
ESB
MAV
3
2
1
0
MSS 6 RQS
Standard event
register
Status summary
message
Status Byte Register
……
Output Queue
Extended event
register or queue
Extended event
register or queue
Extended event
register or queue
Extended event
register or queue
Extended event
register or queue
(Queue is not used)
(Queue is not used)
(Not used)
(Not used)
(Not used)
Service request
occurrence
Data Data Data Data Data
5.5 Status Byte Registe