User Manual

Tags
4.3 InternalTags
Internal tags can be used to calculate values that need not be represented in the
controller, for example information only for the operator. Internal tags are selected
in the same way as an external controller tags. Any number of volatile user defined
tags can be created.
Note:
Internaltagvalueswillnot besavedintheoperatorpanelwhentheprojectis
restarted,unlesstheNonVolatile optionisused.
Unlike the regular drivers, it does not matter if internal tags are used in consecutive
orderornot.
4.4 SystemTags
System tags are used to monitor or access variables from the system. System tags
are handled as regular controller tags, i.e. can be used in screens, logged, included
in scripts etc. The Date and Time system tags can be used when you want to use
the controller clock in the panel project. The following system tags are available:
Systemtag
group
Systemtag Description
CommunicationError
Message
Latestcommunicationerrormessage
CommunicationErrors Numberofactivecommunicationerrorson
allcontrollers
Communi-
cation
Remote Alarm Server
ConnectionErrors
Numberofremote alarm serverswith
connectionerrors,e.g. disconnected
servers
DatabaseErrorActive Setto1whenthere isanactivedataba se
error
DatabaseE rror
Message
Latestdatabaseerrormessage
Database
DatabaseMaxSize
Exceeded
Setto1whenthedatabasemaximumsize
isexceeded
DateTime Currentdateandtime
Day Daycomponentofcurrentdate
DayofWeek Dayofcurrentweek(1-7where1isSunday)
Hour Hourcomponentofcurrenttime
Minute Minutecomponentofcurrenttime
Month Monthcomponentofcurrentdate
Second Secondcomponent ofcurrenttime
Dateand
Time
Year Year component of current date
104
BeijerElectronics, M AEN831P