Unable to use network adapter '' on channel ''. No comm handle provided on connect for line ''. Unable to generate a tag database for device '':Īuto generation produced too many overwrites, stopped posting error messages.įailed to add tag '' because the address is too long. Unable to generate a tag database for device ''. | Object = ''.Īuto-generated tag '' already exists and will not be overwritten. 209 Unable to load the project due to a missing object. To load XML projects, change the product language selection to English in Server Administration. The current language does not support loading XML projects. was not found or could not be loaded.ĭevice discovery has exceeded maximum allowed devices.
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Project without a backup, deselect the backup option under Tools | Options | General and resave the project. Verify the destination file is not locked and has read/write access. Unable to add device due to driver-level failure. Unable to add channel due to driver-level failure.
#KEPSERVEREX SPECS DRIVER#
Remove the conflicting driver and restart the application.įailed to open modem line ''.
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Unable to load the '' driver because more than one copy exists ('' and ''). The device driver was not found or could not be loaded. IFIX Signal Conditioning Options Project Startup for iFIX Applications
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Work with Non-Normalized Floating Point Values Resolve Comm Issues When the DNS/DHCP Device Connected to the Server is Power Cycled Properly Name a Channel, Device, Tag, and Tag Group
#KEPSERVEREX SPECS SERIAL#
First of them was the OPC XML-DA spec, but now we have OPC-UA with its various transport mechanisms also, the OPC Xi specifications are based on Web services and thus need URLs.īelow is a short summary of what we could find about the "OPC URL" syntax used in various OPC products.Channel Properties - Ethernet CommunicationsĬhannel Properties - Serial CommunicationsĬhannel Properties - Ethernet EncapsulationĬhannel Properties - Communication Serializationĭevice Properties - Communication Parametersĭevice Properties - Ethernet Encapsulation Things start becoming even more interesting when we put the Internet-based OPC specifications into the mix, because they use the true URLs for connection to the servers. Also, Kepware ClientAce product uses a variant of this syntax. The OPC NET API has a code that displays this syntax at various places to the user, and is able to recognize it as an input to some of its methods.
#KEPSERVEREX SPECS HOW TO#
And, customers even used that form when they tried to work with our own products, which did not have a support for it at the time (when specifically dealing with COM servers, we prefer to identify the server directly by the computer name, and the server's ProgID or CLSID).Īs it turned out, the probable cause of the proliferation was the OPC NET API, basically a sample code from the OPC Foundation (available to its members) which demonstrates how to create basic OPC servers and clients in. What's more, people who were not expert in OPC area started to consider such URL-like syntax like a part of the OPC specification, and posted forums questions mentioning the syntax etc. Over the time, I spotted its usage at some other places as well. The first time I remember seeing this syntax was when playing with the Softing OPC Toolbox Demo Client: Yet it seems to be used by various products. Have you ever seen something like this, when connecting to an OPC server? opcda://TEST-OPC/5/ is its CLSID.įor OPC "Classic" servers, the OPC specification actually do not have a mention of such syntax at all.