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

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OPC-10000-4 – OPC Unified Architecture - Part 4: Services

5.13.1.5 Queue parameters

Overflow bit (flag) in the InfoBits portion of the DataValue statusCode is set. If discardOldest is TRUE, the oldest value gets deleted from the queue and the next value ... queue gets the flag set. If discardOldest is FALSE, the last value added to the queue gets replaced with the new value. The new value gets the flag