Siemens 6GK7242-7KX30-0XE0 Manual Do Utilizador
Notes on operation and configuration
4.5 Connection monitoring, data buffering, acknowledgement
CP 1242-7
Operating Instructions, 03/2012, C79000-G8976-C247-03
Operating Instructions, 03/2012, C79000-G8976-C247-03
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Note
No TeleService connection establishment using "Online" > "Go online"
If you attempt to establish a TeleService connection by selecting the CPU and then selecting
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.
TeleService only from one STEP 7 project
You can only operate TeleService on an engineering Station from within a single STEP 7
You can only operate TeleService on an engineering Station from within a single STEP 7
project. TeleService from more than one STEP 7 project at any one time is not possible.
Terminating a TeleService connection
On completion of the TeleService session, terminate the TeleService connection again using
On completion of the TeleService session, terminate the TeleService connection again using
the "Go offline" button. The connection is terminated after approximately 5 minutes.
Loading only in offline mode
Loading software and blocks with TeleService via GPRS by calling the function "Load to
Loading software and blocks with TeleService via GPRS by calling the function "Load to
device" only works when no TeleService connection is established.
NOTICE
Canceling a TeleService connection when calling online dialogs
An existing TeleService connection is canceled when you attempt to access an additional
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
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".
4.5
Connection monitoring, data buffering, acknowledgement
4.5.1
Redial delay (STEP 7)
"Redial delay " parameter ("Telecontrol" mode)
In "Telecontrol" mode, the redial delay is the waiting time between the connection
establishment attempts of the CP if the telecontrol server cannot be reached. It is configured
in STEP 7, parameter group "Operating mode" of the CP.
A basic value is configured for the waiting time before the next connection establishment
A basic value is configured for the waiting time before the next connection establishment
attempt. After every 3 redial attempts, the basic value is doubled up to a maximum of 900 s.
Range of values: 10 to 600 s.