PlatformNotSupportedException: Operation is not supported on this platform. -...
Good day, I receive a PlatformNotSupportedException: Operation is not supported on this platform. when I run the following code: var client = new EasyDAClient(); DAVtq vtq; try { vtq =...
View ArticleOPC XML-DA. Error: The item value does not specify a timestamp. - by: Andriy
Hello, I get an error from OPC XML-DA server after subscribing to opc items: "The item value from OPC NET API (Data Access) does not specify a timestamp." Can you explain what is wrong? Do you know to...
View ArticleTwo Versions - by: neilcooley
Hi I have existing code running on a old version, v5.2 and i wish to keep this at the moment, can i install and run the latest version alongside this ? O/S is Server 2008. Neil
View ArticleMapping object to Kepware Simulator Sample - by: Whistlerone
I am attempting a proof of concept example of Live Mapping an object in our system to an OPC UA device, in this case the 'Device1' that is the sample object provided by Kepware's Simulator driver. I am...
View ArticleOPC XML-DA. There are many sockets open in subscription mode - by: Andriy
Hello, Vendor info: Nordex OPC XML-DA Gateway The number of open sockets ramping up to 20 + 12 in "time wait" state and is stable. They open and close very often Best regards
View ArticleOPC XML-DA. OPC Server status check can not be disabled - by: Andriy
Hello, OPC Server status verification is still triggered even if it is disabled: ClientParameters.ServerStatusCheckPeriod = -1. In my case I need to disable server state verification or get control...
View ArticleOperation failure with error code -2147352566 (0X8002000A) occured. - by: Nabro
Hi everyone, I'm experiencing some issues with my client application connected to an OPC server. As stated in the title of this topic, I often have the following error : Operation failure with error...
View ArticleEvent subscription does not receive anything on some machines - by: fancybird
Hi ... I am seeing a problem that is repeatable. I am targeting Honeywell Experion PKS (EPKS) OPC server, specifically. When I run the application from my development machine, I don't get any events....
View ArticleDoubts about subscription - by: Alberto_OVT
Hello, I have some question about subscriptions. How can I get information (apart from value, timestamp and codestatus) about the current node when the event client_DataChangeNotification is fired? For...
View ArticleI can write to an OPC server but not read - by: mikeboiko
Hi, I'm not able to perform read/write operations to a Yokogawa ExaOPC. I downloaded the latest QuickOPC library (2019.1) for this test. Then, I opened EasyOpcNetDemo.exe to perform a test on...
View ArticleDelphi - Class not registered - by: uk005
Dear community, I am trying to create simple application in Delphi 10 but getting the error: Class not registered, ClassID: {54AFB0EA-9809-4D1D-AFBE-0EC164C59A45}. Maybe the problem is because I can...
View ArticleUnsubscribeAllItems. SEHException - by: Andriy
Hello, UnsubscribeAllItems method call cause SEHException Library version: 5.54.1133.1 System.Runtime.InteropServices.SEHException (0x80004005): External component has thrown an exception. at...
View ArticleOPC UA ReadMultipleValues/Read get the timestamp and status - by: Moien
Dear all, I am trying to read OPC UA Variables on my OPC server using ReadMultipleValues and Read functions of TEasyUAClient. How can I get simultaneously ItemQuality and TimeStamp? I appreciate any...
View ArticleHow to add new Reference Type - by: Alberto_OVT
Hello, I have an issue and I need some help. When I'm browsing nodes from opc ua server, I have seen that there is a reference type in the server that the UAReferenceTypeIds class does not have and I...
View ArticleRead OPC UA variables takes 30% more CPU Load! - by: Moien
Dear all, I am trying to read some OPC Variables from the OPC Server. They are mainly grouped in four different nodes. In one node I just have an array with "double word" entries. In the other three...
View ArticleProblems getting 16bit int from PLC - by: Hes
Hello everybody! I am using QuickOPC 2019.1 and i am experiencing a problem i've never had with the previous version. When i try to read 16bit int, the value i get is a 32bit int. I am sure the value...
View ArticleUA simple connection error - by: janderscu
I'm having an issue with a simple connection to UA server and reading multiple items... I have verified the data is being pushed from the server using another third party client. With my setup, I know...
View ArticleSubscription error when connecting - Too many subscriptions - by: janderscu
So I have some simple code to subscribe to a few channels. Has been working fine for multiple connections. And now I'm getting the error (attached in screenshot). Looks like there it has hit a limit on...
View ArticleAE unsubscribe re-subscribe - by: fancybird
Hello ... I searched and saw a post on this exact topic in 2014. Forgive me ... I am going to ask again ... with my own specifics. We write a tool to subscribe to AE to capture a "current snapshot"....
View ArticleException using == equality operator against null - by: fancybird
Hello ... Sometimes, we get an exception when checking for aeClient == null. It does not always happen ... but it happened enough that we had stayed away from doing that. We had been using a separate...
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