Siemens S7-1200 TELECONTROL Operating Instructions Manual page 92

Configuration and operation
4.11 TeleService
Terminate TeleService connection
On completion of the TeleService session, terminate the TeleService connection again using
the "Disconnect" button. The connection is terminated after approximately 5 minutes.
User data connections and TeleService
Connections between a CP and telecontrol server for transferring user data are not
interrupted by a TeleService connection.
92
Operating Instructions, 10/2016, C79000-G8976-C311-02
CP 1242-7 GPRS V2