Basic procedure
Note
If the encrypted communication is enabled on a PC station, this PC station can only establish
communication connections to PC stations on which the same PSK is configured.
Note the following example: Communication with inconsistent settings for encrypted
communication in a plant
1. Switch on migration mode for all PC stations:
Leave the PSK unchanged and select the "Migration mode" check box.
2. Disable encrypted communication for all PC stations:
Clear the "Encrypted communication" check box.
3. Enable new PSK for all PC stations:
Select the "Encrypted communication" check box, enter the new PSK and select the
"Migration mode" check box.
4. Switch off migration mode for all PC stations:
Leave the PSK unchanged and clear the "Migration mode" check box.
Example: Communication with inconsistent settings for encrypted communication in a plant
Example of an initial situation
System Communication PSK
Server_A Encrypted, migration mode enabled AAA
Client_1 Encrypted, migration mode enabled AAA
Server_B Encrypted, migration mode enabled 111
Client_2 Unencrypted -
Reaction
Type of communica‐
tion between the PC
stations
Server_A Client_1 Server_B Client_2
Server_A - Encrypted No connection Unencrypted
Client_1 Encrypted - No connection Unencrypted
Server_B No connection No connection - Unencrypted
Client_2 Unencrypted Unencrypted Unencrypted -
Additional information
● Section "How to access PC stations outside a subnet (Page 112)"
Installing PC stations
5.7 Preparing PC stations
PCS 7 - PC Configuration (V8.2)
118 Installation Manual, 03/2016, A5E36200050-AB
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