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Error - bad communication
April 18, 2018
17:16, EEST
sebastien lavaud
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Forum Posts: 1
Member Since:
April 18, 2018
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I encountered this error when connectiong a Beckhoff OPC UA server (on a CX9020):
Bad_NoCommunication (0x80310000) “communication with the data source is defined, but not established, and there is no last known value available.

I tried with the client from UA expert , everything is working fine.

As far as I understand the error message seems to comme from the OPC UA server, but how come I don’t get the error message with another OPC UA client…?

April 19, 2018
13:18, EEST
Heikki Tahvanainen

Forum Posts: 402
Member Since:
April 17, 2013
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Hi Sebastien,

This error code is set by the Prosys OPC UA Historian for example in the situation where there’s a connection break between the Historian and the underlying OPC UA server.

I already sent you an email about the matter, let’s continue from there.

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