Event logging in the system
The "Log database" dialog box in the D2000 CNF process allows setting the log database parameters. The dialog box contains a table comprising the following columns:
- Event - category of system events,
- Log - [Yes/No] - enables/disables logging particular event into the log database,
- History depth [days] - [0-3650] - writing period of event into the log database (in days),
- Use device - [Yes/No] - enables/disables event logging to output device,
- Device - the name of an output device. The output device is the type of device, where logged data will be written. There are these types of output devices:
- PRN, LPT1, LPT2 - output to a specified printer,
FileName.Ext- saving to a text file of a given name.From V21.1 version, it is possible to use Windows environment variables. Usage example: "% userprofile%\Monitoring\logon.txt". When writing to a file, the existence of directories is checked and the missing directory is created. Here, for example, the "Monitoring" directory. The file size is controlled by the max_log_size parameter that is described in the Special Settings chapter.
| Event category | System events |
|---|---|
| Alarms | All changes of alarm states (information about particular alarm states and their changes, see the online guide D2000 System Configuration - topic Alarm states). |
| System | Start and stop of the D2000 system Operator's logon into the D2000 system (logon with incorrect name or password). |
| Process | All status changes of the D2000 system processes (e.g. start, stop, breakdown). |
| Kom process | Communication failures. |
| Operator | All operator's interactions into the system (e.g. changes of system objects' values via control windows in the D2000 HI process). |
| Event | Logs are written by performing LOG commands. |
| Logon/Logoff | Operator's logon/logoff from/to the D2000 system processes. |
| Data export | Export from Browser |
| Change value | Spontaneous changes of values. |
| PostMortemData | Special communication data. |
To set parameters to write events of a given category into the log database:
- Click the required category of events.
- Using Log, History depth, Use device and Device placed bellow the table, set parameters for the given category of events.
- Click the Save button to confirm the log database configuration.