Communication Types; Ethernet Interface (X1) > Advanced Options - Siemens SIMATIC NET TeleControl S7-1200 CP 1243-1 Operating Instructions Manual

4.4

Communication types

In this parameter group, you enable the communication type of the CP.
To minimize the risk of unauthorized access to the station via Ethernet, you need to enable
the communications services that the CP will execute individually. You can enable all options
but at least one option should be enabled.
"Communication types" parameter group
● Enable telecontrol communication
Enables communication with a Telecontrol server on the CP.
● Activate online functions
Enables access to the CPU for the online functions via the CP (diagnostics, loading
project data etc.). If the function is enabled, the engineering station can access the CPU
via the CP.
If the option is disabled, you have no access to the CPU via the CP with the online
functions. Online diagnostics of the CPU with a direct connection to the interface of the
CPU however remains possible.
● Enabling S7 communication
Enables the functions of S7 communication with a SIMATIC S7 on the CP.
If you configure S7 connections to the relevant station, and these run via the CP, you will
need to enable this option.
4.5 Ethernet interface (X1) > Advanced options
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 value configured here for individual communications
partners, refer to the section Partner stations (Page 42).
● 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"
CP 1243-1
Operating Instructions, 12/2016, C79000-G8976-C365-02
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
Configuration
4.4 Communication types
39