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The D2000 KOM process with the KOM Archive functionality can be also started without the D2000 Server process. In that case, the configuration is read from a file, that is placed in the KOMARC subdirectory \KOMARC of the application directory. The subdirectory is created automatically after running the D2000 KOM process with the parameter the /KA parameter. Besides the above-mentioned parameters, there is also the /KC<ApplicationName> parameter required for the definition of the location of the configuration file.
A necessary condition to run the D2000 KOM process without the D2000 Server process is the existence of the configuration file. The file is created and updated automatically after the D2000 KOM process is connected to the D2000 Server process. The file is updated after each change of child objects (lines, stations, I/O tags) that belong to a specific D2000 KOM process.
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The D2000 KOM processes started in this way are connecting to the HOT server. One of them is active and the other one is passive - it acts as if it was connected to the STANDBY D2000 Server. After the current D2000 Server becomes unavailable or STANDBY, the D2000 KOM processes attempt to connect to a new HOT server. When all servers are unavailable, the D2000 KOM processes stay in the same state as they were before the D2000 Server became unavailable (one is active and the other one is passive).
A problem can occur, when something happens to the active D2000 KOM process (the other D2000 KOM process is not notified and stays in the STANDBY state till it is reconnected to the D2000 Server).
Another problem is starting the D2000 KOM process when no server exists - the D2000 KOM process is automatically transferred into the active state as mentioned above.
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