HP 1660B/HP 16518
Programming Reference
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.
Figure B-2. Service Request Enabling
STATUS
BYTE
REGISTER
SERVICE
REOUEST
ENABLE
REGISTER
l SRE <NRf>
Status Reporting
B-5