Siemens CP 1243-7 LTE Operating Instructions Manual page 130

Diagnostics and upkeep
6.5 TeleService
Requirement for TeleService via a telecontrol connection: TeleService server
In TeleService via telecontrol, a TeleService server is required as the intermediary between
S7 station and engineering station, see also the section Requirements for operation
(Page 20).
● Telecontrol server
If you use a telecontrol server, the intermediary can be the telecontrol server.
● TeleService gateway
If there is no telecontrol server in your system, a TeleService gateway must exist as the
intermediary.
For documentation of the two systems, refer to Documentation references (Page 151).
Requirements in the security configuration of the CP
For the remote station, TeleService can only be used if the engineering station (with CP
1628 or via SCALANCE S) and the CP are configured in a common VPN group.
For TeleService, you need to enable the option "Allow S7 protocol" in the IP rules of the
firewall configuration.
Remember the following when establishing TeleService connections via mobile wireless.
Note
TeleService only by a TIA Portal instance
You can operate TeleService with a certain S7 station only from a single engineering station
(TIA Portal instance / STEP 7 project). TeleService using several engineering stations at the
same time with a station is not possible.
TeleService with several engineering stations with different S7 stations is possible if the
suitable STEP 7 project exists on every engineering station.
Note
No TeleService connection establishment using "Online" > "Go online"
If you attempt to establish a TeleService connection by selecting the CPU and then selecting
the menu or shortcut menu command "Online" > "Connect online", STEP 7 will automatically
attempt to connect via Ethernet. Reason: In STEP 7, the last connection path used to
download the project data is stored.
Note
Canceling a TeleService connection when calling online dialogs
An existing TeleService connection is canceled when you attempt to access an additional
station or a node.
When there is an existing TeleService connection, do not select any of the menu commands
"Go online", "Online & Diagnostics", "Load to device", "Extended download to device" or
"Accessible nodes".
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Operating Instructions, 04/2017, C79000-G8976-C381-03
CP 1243-7 LTE