cannot be opened ERR_VUM_FILE_READ [...] read ERR [...] list cannot be read
_SetQueueCapacity initializes this field. nRead [...] sure, nReadPos and n [...] PastMarker to nReadPos -1 are
SyncBufferDuration output of MC_GroupRead [...] _GroupPrepareTrigger , SMC_GroupRead [...] SMC_GroupRead
ComPurge (Function) SysComRead
FileOpenAsync (FunctionBlock) SysFileRead