
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
common command.
STATUS SUMMARY MESSAGES
HP
16518
Programming Reference
READ BY SERIAL POLL
STATUS BYTE REGISTER
R E A D B Y
SERVICE REOUEST
ENABLE REGISTER
l
SRE
Figure B-2. Service Request Enabling
Status Reporting
B-5