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Scope: Core (OPC-10000-*) All specs

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OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

6.7.2.4 Sequence Header

shall be incremented by exactly one for each MessageChunk sent. SecurityPolicies with LegacySequenceNumbers set to TRUE, the SequenceNumber shall monotonically increase for all Messages and shall not wrap around until ... first number after the wrap around shall be less than 1024. SecurityPolicies with LegacySequenceNumbers set to FALSE, the SequenceNumber shall start at 0 and monotonically increase for all Messages