Siemens ET 200SP Operating Instructions Manual page 94

Configuration and operation
4.7 Table "Certificate manager" (CP 1542SP-1 IRC, CP 1543SP-1)
Assign the certificates in the CP configuration
Select the following certificates in the CP configuration:
● Table "Device certificates":
The device certificate of the CP generated by STEP 7
● Table "Certificates of the partner devices":
The imported certificate of the partner
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CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
Operating Instructions, 01/2017, C79000-G8976-C426-03