What changes are needed in Server Operating system using OPC with Labview
I am a novice trying to connect Labview into KepwareEX OPC server. I am using MS Windos XP on both sides. at first I could see no OPC server I checked with the Kepware and they suggested me to fix the DCOM configuration on the Server. at last I saw the OPC Server and their client connected to it.
When I try to assign a Datasocket connected to a control on Front panel in to OPC. System Browses and see the OPC server but after selecting the tag. when I run the software, connection Lamp gets red and this Error comes up ""Can't connect to OPC server. Registery Access denied" . the Kepware quick client is working OK. and Labview got connected when I tested it on the same server. I think there is something wrong with Server OS configuration cause I can not See the Labview OPC Server too, which is installed but I am not using it, Can anybody help me ?
Hello:
When you try creating a new I/O server and when you select OPC, you should be able to see the list of OPC servers installed in the system. You can select LabVIEW OPC and select a I/O item from the configure OPC client instance.
From what I understand you are able to connect from LabVIEW just fine. Are you able to use server explorer and connect to kepware? The following tutorial will step you through using OPC servers with LabVIEW.
http://zone.ni.com/devzone/cda/tut/p/id/3742
DSC is LabVIEW add-on for developing your HMI/SCADA or high-channel-count data-logging applications. With the DSC Module, you can interactively develop a distributed monitoring and control system with tags ranging from a few dozen to tens of thousands. The following link has a TCP modbus presentation that you will find useful.
http://www.ni.com/labview/labviewdsc/upgrade.htm
Please let us know the steps you are following to configure the OPC connections and post some snapshots. This will help in better understanding.
Thanks and hope this helps
Regards
Avi Harjani
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