CimView sends the client applet a heartbeat message periodically. If the client misses three heartbeats in a row, it puts up the message that the connection to the server is not active.

Increasing this number of messages will prevent network delays from producing false messages but will also increase the time before the user knows there is a problem communicating with the server.

heartbeatInterval is in milliseconds. The default value is 10000.

More information

Supported Java Applet parameters.