Siemens SIMATIC S7-1200 - 3.5 Working with Instructions

Configuration and operation
5.11 STEP 7 configuration of individual parameters
CP 1243-1 PCC
44 Operating Instructions, 02/2015, C79000-G8976-C384-01
5.11.2
Ethernet interface (X1) > Advanced options
TCP connection monitoring
The setting made here applies globally to all TCP connections of the CP.
Note the option of overwriting the value configured here for individual operation centers, refer
to the section Operation center1 or Operation center2 (Page 45).
TCP connection monitoring time
If there is no data traffic within the connection monitoring time, the CP sends a keepalive to
the communications partner.
● Permitted range: 0 ... 65535 s
● Default setting: 180 s; if you enter 0 (zero), the function is deactivated.
The monitoring time is configured for the Ethernet interface as the default for all TCP
connections. The default value can be adapted individually for each connection in "Operation
center".
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.
● Permitted range: 0 ... 65535 s
● Default setting: 1 s; if you enter 0 (zero), the function is deactivated.
The monitoring time is configured for the Ethernet interface as the default for all TCP
connections. The default value can be adapted individually for each connection in "Operation
center".
5.11.3
Operation center
Operation center
●
Enable operation center
Selecting the option enables communication with the configured operation center on the
CP. You have option of configuring two operation centers.
●
Operation center number
The Operation center number in this parameter group is set by the system. It is required
for data point configuration.