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OPC client polling hangup

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23 May 2018 06:25 #6360 by support
Replied by support on topic OPC client polling hangup
The base licenses are for the version that is current at the time of purchase (and earlier versions), plus any new versions that we release in 60 days after the purchase.

An "upgrade assurance" (earlier called "free upgrades" or "maintenance") can be purchased together with the license (and later extended), for 1, 2, 3, 4 or 5 years. This gives the buyer the right to use versions released during the upgrade assurance period without further payment.

I do not know which license you have. It is in your documents. If you some how do not know either, send me your serial number, or other identifying information, to support09 (at) opclabs.com.

Regards

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23 May 2018 03:16 #6359 by SENTHILKUMAR
we already purchased the license. again why its need to purchase? i cant understand the strategy??

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22 May 2018 12:36 #6355 by support
Replied by support on topic OPC client polling hangup
Please test with 5.52.184.1 or later, as explained here: www.quickopc.com/forum/quickopc-net--9/2374-quickopc-client-...t-retaining-back?start=30#6302 . There is a chance (but no guarantee) it has been fixed in this build.

The timeout might be normal but it should go back to normal when the connection/server becomes accessible again.

If you do not have a license for 5.52 and need more than 30 minutes of the trial, we can give you evaluation license for version 5.52 valid for 30 days for this purpose, free of charge. Let me know.

Best regards

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21 May 2018 01:41 #6351 by SENTHILKUMAR
Dear Z,

we are using quilck OPC build 5.51.465.1

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19 May 2018 10:30 #6347 by support
Replied by support on topic OPC client polling hangup
Please indicate not just the version, but also the build of the QuickOPC used in your application.

Regards

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17 May 2018 02:11 #6339 by SENTHILKUMAR
Dear Z,

we arrived code hangup situation in real time.

we are using OPC client polling concept with OSI PI SOFT OPC DA serve.

code settings


static EasyDAClient easyOPCClient;

EasyDAClient.SharedParameters.TopicParameters.SlowdownWeight = 0.0f;
EasyDAClient.SharedParameters.TopicParameters.SpeedupWeight = 0.0f;
easyOPCClient = new EasyDAClient();
easyOPCClient.Isolated = true;
easyOPCClient.InstanceParameters.Timeouts.ReadItem = 6000;//set 30 seconds timeout for read item
easyOPCClient.InstanceParameters.Mode.AllowAsynchronousMethod = false;
easyOPCClient.InstanceParameters.UpdateRates.ReadAutomatic = Timeout.Infinite;
easyOPCClient.InstanceParameters.UpdateRates.WriteAutomatic = Timeout.Infinite;
EasyDAClient.SharedParameters.ClientParameters.UseCustomSecurity = false;



we are using read multiple items method

DAVtqResult[] vtqResults = easyOPCClient.ReadMultipleItems(ServerDetail, subarray);

we observed after running twenty days, we received two error codes in two successive reads.

in first read we received below error

-1073430509 - Read not completed. This error indicates that it could not be verified that the requested read operation was completed during the timeout period. It is possible that the read operation will actually succeed or fail, but later. Increase the timeout period if you want to obtain positive or negative indication of the operation outcome. Other reason for this error may be that under heavy loads, topic request or response queue is overflowing. Check the event log for queue overflow errors (if event logging is supported by the product and enabled). -status Unknown


second read we received this error

-1073430526 - Cannot connect topic (timeout). -status Unknown


on third read, the application hanged at this point.

DAVtqResult[] vtqResults = easyOPCClient.ReadMultipleItems(ServerDetail, subarray);

please let's know solution for this issue.

we running licensed version

quick OPC Application version : 2017.2 (5.51)

please provide a solution for this issue. the OPC server will not support subscription

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