Micromod MOD: 30ML Functions Data Base Reference User Manual
Page 63
MOD 30ML Functions
PROCESS ALARM DISPLAY BLOCK
09
Alarm Active (A) ................................................................................................................– WR
The Alarm Active status output is a calculated block output that uses the following order of
comparison: Alarm Input value, Alarm Activate (trip) Condition, Alarm Activate (trip) Value. If
the result of the comparison is true, the alarm is active. Otherwise, the alarm is clear. Writing
this output is allowed, but only if the block or its loop is in DEBUG (write will not be reported
as an event).
TRUE
1
A calculated block output indicating the alarm calculation has
determined there is an alarm.
FALSE
0
A calculated block output indicating the alarm calculation has
determined there is no alarm. Since the user can not enter initial
data, when this block is initially added to the database in the
configurator, this field will be FALSE (clear and acknowledged), and
data quality set bad.
10
Active Quality (AQ) ...........................................................................................................– WR
Writing this output is allowed, but only if the block or its loop is in DEBUG (write will not be
reported as an event).
GOOD
0
Quality is left GOOD when the quality of the acknowledge input is
bad.
BAD
1
Quality is set BAD when the quality of the alarm input is bad.
11
Report events? (REPORT) ............................................................................................... CWR
The reporting of alarm events to the system event queue is determined by configuring or
writing this attribute.
NO
0
No reports are made.
YES
1
Reporting of alarm occurrence and acknowledgment events is made
to the System Event queue. Note that this does not affect reporting
of block state transitions.
The following alarm event transitions are reported when an alarm
occurs: See IB-23G600 (I/O Logic Book 1) Section 3.4.5, Event
Transitions for additional information.
• 3
Alarm goes active and unacked.
• 4
Alarm goes active but not unacked.
• 5
Alarm goes active while unacked.
• 6
Alarm goes clear while unacked.
• 7
Alarm goes clear while acked.
• 8
Alarm cleared by suppression.
• 9 Alarm acknowledged.
• 10 Alarm globally acknowledged.
• 11 Alarm acked by suppression.
• 12 Alarm suppressed.
• 13 Alarm enabled.
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