OPC DA 2.05a - Specification EXT070513 The OPC Data Access Custom Interface - This document will describe the Interfaces and Methods of OPC Components and Objects. The OPC Data Access Automation Interface - A Separate Document (The OPC Data Access Automation Specification 2.0) will describe the OPC Automation Interfaces which facilitate.

1. Opc Foundation

Opc Foundation

I'm finding some interesting behavior when trying to access Proficy iFIX HMI / SCADA with PCo 2.1 using OPC DA.PCo Version 2.1.0.55iFIX version 5.1SCADA OS: Windows XP Pro, SP3MII Version 12.1.5 Build(99)What happens is that when I do a tag list in a tag query, instead of getting the tags, I get the propertes of the tags in the tag list, so what I think PCo's OPC client is doing is resolving to the lowest level of the tag list, which of course would be a tags individual properties. IFIX UDS does not exhibit this behavior.I've tried a variey of settings in PCo, including 'Force Flat Namespace' to no avail.

Is there an option to set how far down the tag list drills?Here is my setup, I know most of these settings have nothing to do with my problem but here they are for completness:Source System Type: OPC DAOPC Server Name: OPC Data Access 2.0 for ifixSpecification: DA 2.05AAcquistion Mode: SynchronousRead Source: PCoCacheForce Flat Namespace: FalseSynchronous Read Source: DeviceAcceptable Data Quality: GoodActivate Items: BothAgent:No Subcription ItemsCommunication: MIITag Query Cache Mode: Cache.