Siemens CP 1243-7 LTE Operating Instructions Manual page 58

Configuration
4.8 Partner stations
● 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 monitoring time is specified at a higher level for the Ethernet interface as the default
for all configured TCP connections, see also section Ethernet interface (X1) (Page 53).
You will find information on the acknowledgment of messages in the section
"Acknowledgment (Page 60)".
– The parameter below the Ethernet interface
– The parameter below "Partner stations"
● TCP keepalive monitoring time
If the value configured here differs from the value configured in the Ethernet interface
parameter group, the monitoring time of the "Partner stations" parameter group is used.
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: 10 s. Permitted range: 1...65535 s.
– The parameter below the Ethernet interface
– The parameter below "Partner stations"
● Connection mode
In the "Permanent" connection mode, there is a permanent connection to the
communications partner.
The CP only supports this connection mode.
For information on connection establishment, refer to the section "Connection
establishment (Page 60)".
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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