Annex B : Additional information (informative) ToC Previous Next

B.2 Use cases for Operator Acknowledgment ToC Previous Next

B.2.4 Use case 3: bidirectional comm. and single, one-sided OA ToC Previous Next

readme_files/image034.png Figure 30 – One sided OA in bidirectional safety communication

In this scenario (see Figure 30), an operator acknowledgment activated at controller A suffices for re-establishing the bidirectional connection. Both sides will cease delivering fail-safe values and continue sending process values. This is accomplished by connecting OperatorAckProvider with OperatorAckConsumer at the SafetyConsumer of controller B. Activating operator acknowledgment at controller B is not possible in this scenario.

Previous Next