User manual

IEC61131 User and Reference Manual
April 22, 2008
125
DNP in TCP
The DNP in TCP property page is selected for editing by DNP in TCP in the tree control
section of the IP Configuration dialog. When selected the DNP in TCP property page is
active.
The Protocol selection selects whether the DNP in TCP protocol is enabled. If this option is
enabled the controller supports DNP in TCP protocol. Disabling this option prevents the
controller from processing DNP in TCP protocol messages. Master messaging is always
enabled. The default selection is disabled.
The Server Idle Timeout determines when connections from a remote device are closed.
Setting this value to zero disables the timeout; the connection will be closed only when the
remote device closes it. Any other value sets the timeout in seconds. The connection will be
closed if no messages are received in that time. This allows the controller to free unused
connections. Valid timeout range is 0 to 4294967295 seconds. The default value is 250
seconds.
The Master Idle Timeout determines when connections to a slave controller are closed.
Setting this value to zero disables the timeout; the connection will be closed only when your
program closes it. Any other value sets the timeout in seconds. The connection will be
closed if no messages are sent in that time. This allows the slave device to free unused
connections. Valid timeout range is 0 to 4294967295 seconds. The default value is 10
seconds.
The TCP Port sets the port used by the DNP in TCP protocol. Valid port number range is 1
to 65534. The default value is 20000. Consult your network administrator to obtain a port if
you are not using the default.