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11/14/2017
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I’ll get right into it.
After, either a disruption of power or the network, dynamic data is not restored. What occurs is that OPC server retains the last known values of a field transmitter, and will not resume dynamic values unless the OPC server is rebooted again, after power or communication lines have been restored.
Does anyone have any remedies or workarounds to maintain dynamic data values after one or both of these conditions occur?
Is there someone who can work with me with on the Server’s source code to alleviate this scenario and then recompile the server’s software for testing?
07/05/2017
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George,
Are you using a commercial SDK? Is your server based on the sample code? or an open source SDK? Is it commercial product?
The SDK’s and samples typically provide the OPC UA aspect of an interface, you, the developer, has to write the interaction with the underlining system.
How are you communicating with the underlining system? You said field transmitter – is it a field bus you are talking to? which one?
Some tips – you have to detect that the communication failed, so you can restart it, how you do that depends on the communication to the device.
Paul
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