system.opchda.readRaw(serverName, itemIds, startDate, endDate, maxValues, boundingValues)
String serverName - The name of the defined OPC-HDA server to read.
List itemIds - A list of item ids to read.
Object startDate - The starting date/time of the query.
Object endDate - The ending date/time of the query.
Integer maxValues - The maximum number of values to return. 0 or less means unlimited.
Boolean boundingValues - A boolean indicating whether or not the "bounding values" should be included in the result set. The bounding values provide a value exactly at the start and end dates, but may be resource-intensive to retrieve.
List[ReadResults] - A list of read results which is one-to-one with the item IDs passed in. The ReadResult object has a 'serviceResult' quality property that indicates whether the call was successful, and is itself a list of QualifiedValues.
Gateway, Vision Client, Perspective Session