SMA Sunny Data Control V.4.2 - Manual (Page 153)

SMA Technologie AG Transferring Data to the Internet
User Manual SDC-TEN080642 Page 153
ServerPort (Integer)
This parameter specifies the TCP port which aids the applet in establishing a TCP
connection to the SDC agent (on the web server). The value must correspond to the
SDC agent's settings. See section 12. 7 „SDC Agent” (page 145).
The default value is port 18500 if the parameter is not declared.
This setting sets the communication port to 12345.
If you use a firewall, it is imperative to enable the specified TCP port between the
Java applet and the agent on the web server!