Status Reporting
Introduction
HP 1650B/HP 16516
Programming Reference
The status reporting feature available over the bus is the serial poll. IEEE
488.2 defines data structures, commands, and common bit definitions.
There are also instrument defined structures and bits.
The bits in the status byte act as summary bits for the data structures
residing behind them. In the case of queues, the summary bit is set if the
queue is not empty. For registers, the summary bit is set if any enabled bit
in the event register is set. The events are enabled via the corresponding
event enable register. Events captured by an event register remain set
until the register is read or cleared. Registers are read with their
associated commands. The “*CL.!? command clears all event registers
and all queues except the output queue. If
“*CL.!7
is sent immediately
following a c program message terminator
>
, the output queue will also
be cleared.
Status Reporting
B-l
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