[RQ7.8] This structure shall be used to transmit non-safety data values (e.g., diagnostic information) together with safe data consistently. Non-safety data is not CRC-protected and may stem from an unsafe source.

[RQ7.9] When presented to the safety application (e.g., at an output of the SafetyConsumer), non-safety values shall clearly be indicated as “non-safety”, by an appropriate vendor-specific mechanism (e.g. by using a different color).

To avoid possible problems with empty structures, the dummy structure NonSafetyDataPlaceholder shall be used when no non-safety data is used (see requirement RQ6.8).