HP 8920B - Page 284

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Chapter 5, Advanced Operations
Status Reporting
Error Message Queue Group
The Error Message Queue Group is an implementation of the status queue model
described in "Status Queue Model" on page 270. The Error Message Queue queue
type is a first-in, first-out (FIFO) queue that holds up to 20 messages. The Error
Message Queue Group includes a FIFO queue but no Message Available (MAV)
Summary Message. Refer to the
"Status Reporting Structure Overview" on page
260
for an overview of status queue operation. Figure 11 shows the structure of
the Error Message Queue Group.
Figure 11 Error Message Queue Group
Last Message Entered
Next Message Entered
First Message Entered
Last Message
to be Read
First Message
to be Read
SYSTem: ERRor?
Error Message Queue