Hi , an error occured qhen i try to read a value, but this error came out only yesterday, it was all right before yesterday evening, what could the problem be? Thanks
error text:
OpcLabs.EasyOpc.UA.OperationModel.UAException: An OPC-UA operation failure with error ID 'OpcLabs.UAEngine=1' occurred, originating from '' and with depth of 3. The inner exception, of type "OpcLabs.EasyOpc.UA.Engine.UAEngineException", contains details about the problem. ---> OpcLabs.EasyOpc.UA.Engine.UAEngineException: UA SDK error (Opc.UA.ServiceResult=0x80820000) in 'DiscoveryClient.GetEndpoints'. OPC UA service result - {BadTcpInternalError}. Error establishing a connection.
+ The error occurred when preselecting an endpoint for discovery URL "opc.tcp://172.16.253.6:4840".
+ Connection attempt #1; last connected at 01/01/0001 00:00:00 (local); unconnected for 00:00:00.2810000.
+ Some possible causes of this error are that the OPC-UA server is not running, or is not configured to listen on the specified port. Also, the network connection may be broken (cable unplugged?).
+ The endpoint URL string used was "opc.tcp://172.16.253.6:4840".
+ The client method called (or event/callback invoked) was 'ReadMultiple[1]'. ---> OpcLabs.EasyOpc.UA.UAServiceException: OPC UA service result - {BadTcpInternalError}. Error establishing a connection.
--> {BadTcpInternalError}. An unexpected error occurred while connecting to the server.
--> {Bad}. Impossibile stabilire la connessione. Risposta non corretta della parte connessa dopo l'intervallo di tempo oppure mancata risposta dall'host collegato 172.16.253.6:4840. ---> OpcLabs.BaseLib.Portable.CustomException: Impossibile stabilire la connessione. Risposta non corretta della parte connessa dopo l'intervallo di tempo oppure mancata risposta dall'host collegato 172.16.253.6:4840
+ This is a deducted base exception.
