Configuration and operation
4.11 TeleService
CP 1242-7 GPRS V2
90 Operating Instructions, 10/2016, C79000-G8976-C311-02
Note
No TeleService connection establishment using "Online" > "Go online"
If you attempt to establish a TeleService connec
tion 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 me
nu commands
"Go online", "Online & Diagnostics", "Load to device", "Extended download to device" or
"Accessible nodes".
Mechanisms of connection establishment
The request for establishment of a TeleService connection is triggered by the engineering
station. This request is sent via the intranet or Internet to the TeleService server (telecontrol
server or TeleService gateway).
The TeleService server forwards to request to the CP in the S7 station. The TeleService
server sends the request by e-mail to the SMS gateway which converts the e-mail and
forwards it as an SMS to the CP in the S7 station via the mobile wireless network.
The TeleService connection is finally actively established by the CP.
Establishing a TeleService connection
Follow the steps below to establish a TeleService connection to the remote station via the
mobile wireless network from the engineering station:
1. Select the CPU of the remote station in the STEP 7 project.
2. Select the menu "Online" > "Extended go online".
The "Online access" dialog opens.
3. Choose the entry "TeleService via telecontrol" in the "Type of interface" drop-down list.
4. Choose the entry "TeleService board" in the "PG/PC interface" drop-down list.
5. Click on the
icon next to the "PG/PC interface" drop-down list.
The "Establish remote connection via telecontrol" dialog box opens.
6. Make the necessary entries in this dialog.
You will find information on the necessary entries in the tooltips of the STEP 7 online
help.
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