SCL

communication layer above the OPC UA communication stack that includes all necessary additional measures to ensure safe transmission of data in accordance with the requirements of IEC 61508

Note 1 to entry: The SCL provides several services, the most important ones being the SafetyProvider and the SafetyConsumer.

[SOURCE: IEC 61784-3:2021, 3.1.39 modified – “FAL” replaced by “OPC UA communication stack”, not to entry added]