Diagnostics and upkeep
6.2 Online security diagnostics via port 8448
CP 1243-8 IRC
174 Operating Instructions, 02/2018, C79000-G8976-C385-03
Online security diagnostics via port 8448
Security diagnostics without opening port 102
If you want to perform security diagnostics without opening port 102, follow the steps below:
1. Select the CP in STEP 7.
2. Open the "Online & diagnostics" shortcut menu.
3. In the parameter group "Security" click the "Connect online" button.
In this way you perform the security diagnostics via port 8448.
Online functions and TeleService
Online functions and TeleService
Along with STEP 7 on the engineering station (ES) the CP provides various diagnostics and
maintenance functions under the following terms:
● Online functions
Access from the ES to the station via LAN
Requirement: The ES and the CP are located in the same subnet.
● TeleService
Access from the ES to the station via WAN (Internet)
Requirement: The CP is connected to the ES and can be reached via this path Note
section Access to the Web server (Page 79) for more information.
For a remote station located in a different IP subnet or that can be reached via the
Internet, these functions can only be used if the ES (with CP 1628 or via SCALANCE S)
is connected to the station via a VPN tunnel.
Connections between a CP and telecontrol server for transferring user data are not
interrupted by a TeleService-connection.
The functions and the connection establishment are largely the same with the online
functions and TeleService.
Note
Transmission time with TeleService
Note that transferring
larger amounts of data via WAN (Internet) can take a very long time.
If there are disruptions or interruptions of the transmission path this can lead to the data
transmission being aborted.
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