User Manual

ManualsBrandsSiemens ManualsBuilding automationDesigo Building Automation System 6.2 - Technical Principles

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Alarm management

Alarm message texts

CM110664en_07 163 | 353

Combination of multiple alarm suppressions

The above options to suppress alarms can overlap. For an object impacted

already by multiple types of suppression, the following rule applies: One type of

alarm suppression cannot be overridden by another type of alarm suppression.

AS_STA.

SupEvt

CMN_ALM.

SupEvt

CMN_ALM.

EnSupEcp

FB.SupEcpt FB.EnEvt Resulting alarm suppression

for function block

True • • • • suppressed

• • • • (F, F, F) suppressed

False False • • (T,T,T) not suppressed

False True False • (T,T,T) suppressed

False True True True (T,T,T) not suppressed

False True True False (T,T,T) suppressed

9.11 Alarm message texts

Desigo contains all the alarm texts necessary to help the user maintain an

overview and an understanding of the alarms. These alarm texts can be freely

defined in the engineering tool for each alarm source individually. If this is not

done, text will be generated automatically on the basis of the Technical

Designation of the individual function blocks. In a third category are the

predefined alarm texts used in conjunction with device faults.

The Desigo system supports alarm message texts.

For Desigo PX the message texts for TO_OFFNORMAL, TO_FAULT and

TO_NORMAL alarms are entered as an Array [3] in the BACnet property

[Message_Text]. For Desigo room automation the BACnet Property

Event_Message_Texts_Config is used.

For Desigo PX if no alarm message text has been entered for an alarm source,

or if the alarm message text for a given state (e.g., TO_FAULT) has been left

blank, an alarm message text will be generated from the existing descriptions.

Longer messages are divided into segments with forward slashes // so that the

client can display the message over several lines. Each segment may contain a

maximum of 70 characters, with a maximum of three segments separated by //

for any one message.

System alarms and events of the BACnet Device Info Object use text messages

which cannot be configured, e.g., Battery low.

System alarms and events of the BACnet Device Info Object use non-

configured text messages whose contents are language-dependent. These

Project-spec

Description

Standard

Description

Configured alarm

message texts

Non-configured

message texts