For the sake of example assume that coupler is running

by default at 0.0.0.0 .

Beremiz/beremiz_tutorial_opc_ua/opcua_0@opcua/confnode.xml

 <?xml version='1.0' encoding='utf-8'?>
-<OPCUAClient xmlns:xsd="http://www.w3.org/2001/XMLSchema" Server_URI="opc.tcp://192.168.3.2:4840">
+<OPCUAClient xmlns:xsd="http://www.w3.org/2001/XMLSchema" Server_URI="opc.tcp://0.0.0.0:4840">
   <AuthType/>
 </OPCUAClient>

Beremiz/beremiz_tutorial_opc_ua/plc.xml

 <?xml version='1.0' encoding='utf-8'?>
 <project xmlns:ns1="http://www.plcopen.org/xml/tc6_0201" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://www.plcopen.org/xml/tc6_0201">
   <fileHeader companyName="Unknown" productName="Unnamed" productVersion="1" creationDateTime="2021-05-14T14:33:11"/>
-  <contentHeader name="Counter (OSIE)" modificationDateTime="2022-12-13T16:54:22">
+  <contentHeader name="Counter (OSIE)" modificationDateTime="2023-11-14T13:58:32">
     <coordinateInfo>
       <fbd>
         <scaling x="0" y="0"/>