Siemens CP 1243-7 LTE Operating Instructions Manual page 54

Configuration
4.7 Ethernet interface (X1)
Advanced options > TCP connection monitoring
The settings made here apply globally to all configured TCP connections of the CP. If
telecontrol communication is enabled, this is the connection to the telecontrol server.
Note the option of overwriting the general value configured here for individual
communications partners, refer to the section Partner stations (Page 57).
(Note: The settings made here do not apply to connections programmed for Open User
Communication with the program blocks.)
● TCP connection monitoring time
Function: If there is no data traffic within the TCP connection monitoring time, the CP
sends a keepalive to the communications partner.
Default setting: 180 s. Permitted range: 1...65535 s.
– The parameter below the Ethernet interface
– The parameter below "Partner stations"
● TCP keepalive monitoring time
After sending a keepalive, the CP expects a reply from the communications partner within
the keepalive monitoring time. If the CP does not receive a reply within the configured
time, it terminates the connection.
Default setting: 180 s. Permitted range: 1...65535 s.
– The parameter below the Ethernet interface
– The parameter below "Partner stations"
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The monitoring time is configured for the Ethernet interface globally for all TCP
connections. The parameter is preset to 180 seconds as default.
The parameter "TCP connection monitoring time" occurs again with the individual
partners in the parameter group "Connection to partner". This parameter applies only
to the individual partner. The value of 180 seconds preset on the Ethernet interface is
adopted for the individual partners.
If for any reason you want to change the value of the TCP connection monitoring time
for individual partners, you can adapt the value for every partner individually in
"Partner stations". If. for example, you want to check the connection at shorter
intervals, reduce the value. If disruptions or delays occur often when transferring in
your mobile wireless network, it may be advisable to increase the value.
The monitoring time is configured for the Ethernet interface as a global setting for all
TCP connections.
As with the TCP connection monitoring time, the value of "Partner stations" can be
adapted for each partner individually.
Operating Instructions, 04/2017, C79000-G8976-C381-03
CP 1243-7 LTE