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Codesys: UaExpert can not connect to OPC/UA Server of Raspberry Pi

Forum: Engineering 🇬🇧

Creator: leon-zhang

Created: 2021-11-08

Updated: 2021-11-10

leon-zhang - 2021-11-08

Hallo everyone,

I'm trying to using UaExpert to connect to the OPC/UA Server on my Raspberry Pi, but I get an error message

DiscoveryUrl of FindServers (opc.tcp://192.168.1.108) differs from the one received in GetEndpoints (opc.tcp://raspberrypi:4840)
Could not connect to server: BadCommunicationError

also showing in the following attachments.

Does anyone know how to connect to the OPC/UA Server on my Raspberry Pi?

Best Regards,
Leon

Add_Server.png

error_message.png

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hermsen - 2021-11-08

You should mandatorily use the ip adress. You can change the name into the ip and that should work;

opc.tcp://192.168.1.108:4840

Last edit: hermsen 2021-11-08

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- leon-zhang - 2021-11-09
  
  Last edit: leon-zhang 2021-11-09
  
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leon-zhang - 2021-11-09

Hallo h-hermsen,

thank you very much for yuor help.

You mean that I should change the name into the ip(opc.tcp://192.168.1.108:4840). I have done in Server Settings as the first screenshot in the added attachment. Is that right?

But I still can not connect UaExpert to OPCUA Server on Raspberry Pi and I get new error message as the second screenshot in the added attachment. Can you help me? This is very important for my work. Please...

BR

leon-zhang

error_message1.png

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leon-zhang - 2021-11-09

Hallo,

I can only add one screenshot every time.

Above I add the second screenshot as I described.

Now I add the first screenshot as I described.

BR

leon-zhang

Server_Settings.png

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hermsen - 2021-11-09

https://help.codesys.com/webapp/_cds_runtime_opc_ua_server;product=codesys;version=3.5.17.0

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leon-zhang - 2021-11-10

Hallo h-hermsen,

I have followed the instruction of the link you sent me.

But when I Click View -> Security Screen, I can not find the Devices tab as shown in the attachment.

BR

Leon

screenshot_from_instruction.png

screenshot_without_Device_tab.png

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eschwellinger - 2021-11-10

use the CODESYS Installer ("c:\Program Files (x86)\CODESYS\APInstaller\APInstaller.GUI.exe" )
to install the Security Agent.

SecurityAgentInstaller.jpg

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- leon-zhang - 2021-11-10
  
  Hallo eschwellinger,
  
  thank you very much for your help. Everything work fine now.
  
  BR
  
  Leon
  
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