Datasheet
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Siemens Switzerland Ltd http://www.siemens.com/buildingtechnologies-productcatalog 2014
Building Technologies Division
System functions
Alarm management
One of the most important functions of a BACS is automatic alarming in the event of faults in building services plants. The management
of alarms (generation, display and handling) must be simple, efcient and consistent at all levels of the system. Desigo uses the BACnet
alarm functions and supports the following three types of alarms with up to 256 alarm priority levels:
• Basic alarm (for alarms not requiring user interaction)
• Simple alarms (for alarms requiring acknowledgment)
• Extended alarms (alarms requiring acknowledgement and reset)
Alarm messages
• When an alarm occurs, it is automatically detected, registered and transferred to operator units such as the touch panels PXM40/
PXM50, the PXM20, or to the Desigo management station. Informative alarm messages are also transmitted to remote devices such
as mobile phones, fax machines, printers or PCs and web browsers, via SMS and e-mail. The management station further separates
alarms in a customized manner so that each user receives only those alarms that correspond to his/her level of responsibility.
Alarm lists provide a view of all pending and time-stamped alarms at a glance and permit straightforward processing. Operators are
alerted to incoming and pending alarms with pop-up windows and audible and visual signals.
Alarm routing
• Alarms are transferred on the basis of time of day, priority and/or plant type, using a truly powerful alarm routing system at the ma-
nagement station. This ensures the uninterrupted routing of alarms, irrespective of whether or not there is an operator sitting at the
management station. Users are supported in their work by various overview options which help ensure a fast and correct response
even in critical alarm situations.
Alarms for example on touch panels PXM40/PXM50 and on the Desigo Insight management station