Configuration   
4.3 Communication types 
  TIM 1531 IRC 
56  Operating Instructions, 02/2018, C79000-G8976-C468-02 
 
Communication types 
4.3.1
 
Communication types 
"Communication types" 
In this parameter group you specify the protocol for the telecontrol communication. 
● 
Enable telecontrol communication
 
The communication with the communications partners via telecontrol protocols is 
activated generally. 
● 
 
– 
 
The protocol is preallocated. 
 
Communication via the SINAUT ST7 protocol 
The ST7 protocol 
Network types 
ST7 is a protocol for telecontrol communication via WANs (Wide Area Network). 
With ST7 it is possible to communicate via the following network types: 
●  Classic WAN networks 
●  IP-based WAN networks 
The following subscriber types that support the ST7 protocol are possible communications 
partners: 
●  SIMATIC stations with TIM modules or a CP capable of ST7 
●  Control center applications capable of ST7 
Communication with the ST7 protocol runs via configurable connections. You make the 
required settings in the STEP 7 configuration. 
Communication via single or redundant telecontrol connections 
The ST7 communication between two subscribers runs via configurable paths. To do this, 
telecontrol connections are created in the "Network data" editor in the "Telecontrol" tab, see 
section Creating telecontrol connections for the ST7 communication (Page 99). 
When different networks between two subscribers have been created in the network 
configuration, you can create redundant telecontrol connections. In the configuration these