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3.2.15 Substitute ValueThe Substitute Value can be used in place of the Process Value if it cannot be trusted and safely used.

OPC 30142 PROFI-RemoteIO 1.00.1

3.2.18 Process Value QualifierThe Process Value Qualifier provides additional information for one Process Value indicating if it can be trusted and safely used.

OPC 30142 PROFI-RemoteIO 1.00.1

6.18 Zero trust environments

OPC 10000-2 UA Part 2: Security 1.05.04

6.1.3 Determining if a Certificate is Trusted

OPC 10000-4 UA Part 4: Services 1.04

Figure 20 – Determining if a Application Instance Certificate is Trusted

OPC 10000-4 UA Part 4: Services 1.04

6.1.3 Determining if a Certificate is trusted

OPC 10000-4 UA Part 4: Services 1.05.04

Figure 20 – Determining if an Application Instance Certificate is trusted

OPC 10000-4 UA Part 4: Services 1.05.04

4.2.4 Trust on First Use (TOFU)

OPC 10000-21 UA Part 21: Device Onboarding 1.05.04

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