For each alarm group a file can be defined, in which the alarm events are stored, if (!) a 'Save' action has been assigned to the class in the alarm class configuration dialog⮫ “Alarm classes”.
Select the alarm group in the configuration tree and open the dialog tab 'Alarm saving':
The following definitions are possible:
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Filepath: Directories path of the file which is defined in Filename; via button "..." you get the standard dialog for selecting a directory. If the target-specific option 'Alarmhandling on PLC' is activated, this path will be ignored an the file will be saved in the download directory of the PLC⮫ “Target settings in category visualization”.
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Filename: Name of the file which should save the alarm events (e.g. "alarmlog"). Automatically a file will be created which gets the name defined here plus an attached digit and which has the extension ".alm". The digit indicates the version of the log-file. The first file gets a "0"; each further file, which will be created according to the defined File change event, will be numbered with 1, 2 etc. (Examples: "alarmlog0.alm", "alarmlog1.alm).
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File change event: Define here the event which will cause the creation of a new file for alarm-saving. Possible entries: Never, after one Hour, after one Day, after one Week, after one Month, at a rising edge of the variable defined in field Triggervariable, when the number of records in the file as defined in Number of records gets exceeded.
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Triggervariable resp. Number of records: see above, File change event.
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Delete old files after .. Hours: Number of days since the day of creation, after which all alarm log-files except from the actual one should be deleted.
The log-file (History) contains the following entries:
See the column types and exemplary entries for two alarms.
Date/Time in DWORD |
Date |
Time |
Event |
Expression |
Alarm type |
Limit |
Tolerance |
Current value |
Class |
Priority |
Message |
---|---|---|---|---|---|---|---|---|---|---|---|
1046963332 |
6.3.03 |
16:08:52 |
INTO |
PLC_PRG.b |
LO |
-30 |
5 |
-31 |
Alarm_high |
0 |
Temperature ! |
1046963333 |
6.3.03 |
16:08:53 |
ACK |
PLC_PRG.n |
HIHI |
35 |
Warnng |
9 |
Rising Temp. ! |
Example appearance of the log-file
1046963332,6.3.03 16:08:52,INTO,PLC_PRG.ivar5,HIHI,,,, 9.00,a_class2,0,
1046963333,6.3.03 16:08:53,INTO,PLC_PRG.ivar4,ROC,2,,, 6.00,a_class2,2,
1046963333,6.3.03 16:08:53,INTO,PLC_PRG.ivar3,DEV-,,,, -6.00,a_class2,5,
1046963334,6.3.03 16:08:54,INTO,PLC_PRG.ivar2,LOLO,-35,,3, -47.00,warning,10,warning: low temperature !
1046963334,6.3.03 16:08:54,INTO,PLC_PRG.ivar1,HI,20,,5, 47.00,a_class1,2,temperature to high ! Acknowledge !