Importing server certificates for OPC UA Server - References - SIMATIC AX - AX Hardware Engineering documentation - Hardware Engineering,

Server certificate is required for OPC UA Server. To import the certificate, the import-certificate command of the Hardware Compiler can be used with the purpose OpcUaServer.

apax hwc import-certificate -i ./my-hw-config.hwl.yaml --module-name PLC_1 --purpose OpcUaServer --certificate ./my-certificate.p12