friction85

Hello trungnc! I had the same problem. Are you running Windows 7 or Windows Server 2008? Because then the problem could be, that the FsGateway runs with a different Session ID than the UniOPC Server. The Solution is, to run FsGateway not as a Service. You have to start the FGateway.exe manual (normally you can find it here: C:\Program Files (x86)\Wonderware\DAServer\FSGateway\Bin) A better description of this you can find in the Wonderware Technote 853 http://wdnresource.w...l/1/t002648.pdf I hope Unitronics will develope a UniOPC Version that can be configured as a Service soon! Another thing that`s wrong in your configuration is the item name. It should look like e.g.: PLC1.MB12 (PLC1 has to be exact the same as the PLC Name in UniOPC. The Prefixes you had to use in OPCLink are not neccesary in FSGateway) Hope this helps! Greets Tom