1261B User Manual
Using The Enhanced Monitoring System 4-20
Racal Instruments
Ó
1995
The Questionable Condition Register may be read with the query
STATUS:QUES:COND?
This query returns an integer value in the range 0 to 575.
In addition to the Questionable Condition Register, the 1261B
EMS implements a “Questionable Event Register” and a
“Questionable Enable Register”. These act identically to the
“Event Registers” and “Enable Registers” associated with each
of the attributes.
The “Questionable Event Register” contains the latched status of
all of the attribute summary bits. This means that a bit in the
“Questionable Event Register” is set when the corresponding bit
of the “Questionable Condition Register” transitions from a 0 to a
1.
The Questionable Event Register may be read with the query:
STATUS:QUES:EVENT?
The “Questionable Enable Register” enables bits in the
“Questionable Event Register” to set bit 3 of the IEEE-488.2
defined Status Byte. Bit 3 of the Status Byte is the status
summary for all enabled “Questionable Event Register” bits.
The Questionable Enable Register may be set with the
command:
STATUS:QUES:ENABLE
32767
This example enables all of the bits of the Questionable Event
Register to set bit 3 of the Status Byte.
The status reporting hierarchy is shown in
Figure 4-3.
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