Diagnostics according to this document may be implemented in a non-safety-related way. This allows for categorization and localization of safety communication errors.

This document provides two types of diagnostics:

• Diagnostics messages generated by the SafetyConsumer and provided in a vendor-specific way.
• The Method ReadSafetyDiagnostics, defined in the OPC UA Information Model (see 6.2.2.4 and 6.4.3).