Status Byte. The Status Byte contains the basic status information which
is sent over the bus in a serial poll. If the device is requesting service
(RQS set), and the controller serial polls the device, the RQS bit is
cleared. The MSS (Master Summary Status) bit (read with *STB?) and
other bits of the Status Byte are not be cleared by reading them. Only the
RQS bit is cleared when read.
The Status Byte is cleared with the *CLS common command.
-
STATUS SUMMARY MESSAGES
--,
HP 1660B/HP 16518
Programming Reference
-
READ BY SERIAL POLL
‘I
STATUS BYTE REGISTER
I
f-
READ BY
*ST67
SERVICE REOUEST
ENABLE REGISTER
l
SRE
<NRf>
*SRE’
Figure B-2. Service Request Enabling
Status Reporting
B-5
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