Lenze PLC Designer PLC Designer (R2-x) - Manual (Page 384)

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The Resources
382 DMS 3.2 EN 02/2011 TD29

• Acknowledgement of alarms: The main purpose of alarms is to inform the user on
alarm situations. In doing so it often is necessary to make sure that the user has
noticed this information (see possible actions assigned to an alarm in the alarm
class configuration). The user must acknowledge the alarm in order to get the
alarm removed from the alarm list.
• Alarm Event: An alarm event must not be mixed up with an alarm condition. While
an alarm condition can be valid for a longer period of time, an alarm event just
describes the momentary occurrence of an change, e.g. a change from the normal
state to the alarm state. In the PLC Designer alarm configuration for the three
types of events and the corresponding alarm states the same names are used
(INTO, ACK, OUTOF).
In »PLC Designer« the following features are supported:
• Deactivation of the alarm generation for single alarms as well as for alarm groups
• Selection of the alarms which should be displayed by defining alarm groups and
priorities
• Saving of all alarm events in an alarm table
• Visualization element 'Alarm table' in the PLC Designer Visualization