CMDN Manual 11
Auto-Acknowledge/Internal Buzzer Silence
With firmware revision 2.0, the CMDN has the capability of an auto-
acknowledge mode and internal buzzer silence mode.
Auto-Acknowledge
The auto-acknowledge mode allows for automatic acknowledge of
messages waiting without having to go to and manually acknowledge
each message. In auto-acknowledge operation, the CMDN will display
the points that have been received as activation’s and have not restored.
In auto-acknowledge mode, the FCC/IRC/LSS system sees a trouble,
supervisory, or alarm condition, the MW (message waiting) counter
will display the total number of messages waiting to be acknowledged.
The user can manually acknowledge each MW or, once the system
returns to a normal condition, the messages in the CMDN will be
automatically acknowledged.
The MW will acknowledge in the order in which they were received.
alarm messages, because of their priority, will always be first in the
acknowledge order.
If other conditions are restored before the alarm conditions, the CMDN
will not auto-acknowledge any MW’s until the alarm conditions are
either manually acknowledged or restored. If the user manually
acknowledges any of the trouble, supervisory, or alarm conditions, and
the system returns to a normal condition, the CMDN will automatically
acknowledge the restored conditions. The user does not have to
manually acknowledge the restored condition. Any MW’s that have not
been restored will remain. Once the MW’s are acknowledged, they will
NOT remain in the active point buffer for referring to in the future.
Note: With the CMDN in the auto-acknowledge mode, the printer
functions are not available.
Internal Buzzer Silence
The CMDN’s internal buzzer sounds when there are any un-
acknowledged trouble conditions that are not silenced. In the internal
buzzer silence mode, the buzzer can be completely disabled for silent
operation in areas sensitive to high noise.
With the buzzer disabled, the following conditions can be expected.
When the IRC/FCC/LSS system reports a trouble or supervisory
condition, the trouble silence LED will light, reporting that the buzzer
is silenced. The trouble silence LED will also stay illuminated after the
final message is acknowledged. When the system reports an ALARM,
the buzzer will not sound and the trouble silence LED will not light
even after the final message is acknowledged.
Note: Refer to the installation section for proper dip switch setup for
enabling auto-acknowledge or disabling the internal buzzer.
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