The syslog.dat file is the primary log file for Citect SCADA (see Log Files). The following list represents the basic set of parameters you can use to configure logging to syslog.dat.

• [Alarm]EnableErrorLogging — Enables or disables the logging of operational errors to syslog.dat.
• [Alarm]EnableStateLogging — Enables or disables the logging of major alarm system state changes to syslog.dat.
• [General]Verbose — enables a startup dialog box which shows the opening runtime databases and other information.
• [General]VerboseToSysLog — sends additional startup information generated by [General]Verbose to syslog.dat.

The syslog.dat file is restricted in size (to 2000 kb by default). When it reaches its size limit, Citect SCADA renames it "syslog.bak", and starts a new syslog.dat.

You can make this size restriction larger or smaller by using the [Debug]SysLogSize parameter. For example, the following lines in the Citect.ini will set the syslog.dat size to 30 Mb:

[DEBUG]
SysLogSize=30000

If you want to archive more than one system log file, you can set [Debug]SysLogArchive to 1. This adds a timestamp to the filename.

The tracelog.dat file contains managed code logging, mainly in relation to data subscriptions and updates (see Log Files).

The following list represents the basic set of parameters you can use to configure logging to tracelog.dat.

• [Debug]EnableLogging — enables or disables logging to the tracelog.dat file.
• [Debug]Priority — allows you to filter messages logged to the tracelog.dat file according to their priority.
• [Debug]SeverityFilter — allows you to filter messages logged to the tracelog.dat file according to their severity.
• [Debug]SeverityFilterMode — indicates whether messages declared by [Debug]SeverityFilter will be included or excluded from the log.
• [Debug]CategoryFilter — allows you to filter messages logged to the tracelog.dat file by component category.
• [Debug]CategoryFilterMode — indicates whether messages declared by [Debug]CategoryFilter will be included or excluded from the log.

Note: By default, the setting for [Debug]CategoryFilterMode will exclude the categories specified by [Debug]CategoryFilter. Be aware that this behavior is different to [Debug]SeverityFilterMode, which includes the declared severities by default.

Archiving of the tracelog.dat file is enabled or disabled by the parameter [Debug]ArchiveFiles. Archiving occurs once the maximum size specified by [Debug]MaximumFileSize is reached.