Post by animesh on SoftPLC (CODESYS Control x86 RTE V3 x64) OPC UA binds only to 127.0.0.1 — Not binding to LAN IP ^{CODESYS Forge talk (Post)}
Hello everyone, I am facing a persistent issue with the OPC UA Server on Advantech Soft PLC with hard realtime for Win64 (V3_5_2010_3) and need help from the community. Device Information Name: Advantech Control x86 RTE V3 x64 Vendor: Advantech Co., Ltd. Categories: PLCs Version: 3.5.20.10 Description: Advantech Soft PLC with hard realtime for Win64 (V3_5_2010_3) Problem Summary The OPC UA Server works perfectly when accessed via: opc.tcp://localhost:4842 opc.tcp://<hostname>:4842</hostname> But it does NOT work when using the LAN IP: opc.tcp://192.168.0.XX:4842 In UAExpert I get: Discovery FindServers on opc.tcp://192.168.0.XX:4842 failed (BadCommunicationError) Port is LISTENING in windows Firewall.. Tried with turning off the firewall completely. System Information Windows 10 x64 Advantech CODESYS RTE Soft-PLC (hard real-time) Network IP: 192.168.0.XX Hostname: WINDOWS-XXXXX Need your Support
Last updated: 2025-11-24

Post by mohammedben on Fail communication between CODESYS and Fuxa SCADA via OPC UA ^{CODESYS Forge talk (Post)}
hi, When I try to establish communication between CODESYS and Fuxa SCADA via OPC UA, the connection fails, and I receive the following error: 2026-02-15T08:38:13.618Z [ERR] 'codesys' connect failure! Error: The connection may have been rejected by server, Err = (ClientTCP_transport6: socket has been disconnected by third party) 2026-02-15T08:38:13.619Z [ERR] 'codesys' try to connect error! Error: The connection may have been rejected by server, Err = (ClientTCP_transport6: socket has been disconnected by third party) 2026-02-15T08:38:13.622Z [ERR] 'codesys' connect error! undefined (1) Note that there are no problems when I establish communication with the UaExpert and OPC UA Client Simulator software. I also previously tried communicating with RapidSCADA and received the following error: Endpoint with the specified security options not found. And when I try to connect with "none" in the security policy, I get this error: BadSecureChannelClosed I have tried almost all the solutions available online and have not found a solution. I hope you can provide me with a solution that solves this problem. Thanks in advance
Last updated: 2026-02-16

Post by rossanoparis on How to configure CODESYSControl_User.cfg in order to use a specific network card for OPCUA Server ^{CODESYS Forge talk (Post)}
Hello at all I'd like to know how to configure CODESYSControl_User.cfg in order to use a specific network card for OPCUA Server. In the past, I tried to ask in "Forge" about this topic, but I could find neither help nor document informations about it. Reading the file "codesyscontrol.log" I see these logs OPC UA Server Started: Hostname: NTLRPICTRL01, Port: 4840 URL: opc.tcp://NTLRPICTRL01:4840 Loopbackadapter activated. **All available networkadapters are used.** Multithreading activated. 3 workers used. My controller, which is a Linux PC, has got two network cards eth0 and eth1 I whant to use the card with name "eth0" as a server for OPCUA and keep the "eth1" free for other stuffs. Is it possible ? Best regards Rossano
Last updated: 2023-08-25

OPC connection with many data ^{CODESYS Forge talk (Thread)}
OPC connection with many data
Last updated: 2014-04-26

Neues Forum zur CoDeSys OPC Anbindung ^{CODESYS Forge talk (Thread)}
Neues Forum zur CoDeSys OPC Anbindung
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How to change OPC NodeId IdentifierType ^{CODESYS Forge talk (Thread)}
How to change OPC NodeId IdentifierType
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Opc remote alarms on Linux box ^{CODESYS Forge talk (Thread)}
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OPC to HTML/AngularJS/PHP ^{CODESYS Forge talk (Thread)}
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opc client excel2007 unter windows7 ^{CODESYS Forge talk (Thread)}
opc client excel2007 unter windows7
Last updated: 2012-03-07

OPC Really slow with Control RTE ^{CODESYS Forge talk (Thread)}
OPC Really slow with Control RTE
Last updated: 2019-06-11

Connecting with OPC CoDeSys in C# ^{CODESYS Forge talk (Thread)}
Connecting with OPC CoDeSys in C#
Last updated: 2007-10-01

OPC Browser ( Möller XC 200 ) ^{CODESYS Forge talk (Thread)}
OPC Browser ( Möller XC 200 )
Last updated: 2006-10-09

OPC failure after Windows 10 Update ^{CODESYS Forge talk (Thread)}
OPC failure after Windows 10 Update
Last updated: 2018-02-12

OPC Datasources No Live Data ^{CODESYS Forge talk (Thread)}
OPC Datasources No Live Data
Last updated: 2021-11-19

CoDeSys OPC auf Windows 7 ^{CODESYS Forge talk (Thread)}
CoDeSys OPC auf Windows 7
Last updated: 2010-02-05

OPC communication with 16 PLCs ^{CODESYS Forge talk (Thread)}
OPC communication with 16 PLCs
Last updated: 2011-12-06

OPC connection problem with Ethernet ... ^{CODESYS Forge talk (Thread)}
OPC connection problem with Ethernet ...
Last updated: 2012-06-22

JEasyOPC (OS Java OPC Client) ^{CODESYS Forge talk (Thread)}
JEasyOPC (OS Java OPC Client)
Last updated: 2007-02-24

BERGHOF plc + Codesys OPC = Not working? ^{CODESYS Forge talk (Thread)}
BERGHOF plc + Codesys OPC = Not working?
Last updated: 2016-11-10

Einstellung OPC Client, Codesys V3.5 ^{CODESYS Forge talk (Thread)}
Einstellung OPC Client, Codesys V3.5
Last updated: 2017-08-16

CoDeSys version 3 and OPC ^{CODESYS Forge talk (Thread)}
CoDeSys version 3 and OPC
Last updated: 2006-07-26

Opc doesn’t work with codesys v3.5.13 ^{CODESYS Forge talk (Thread)}
Opc doesn’t work with codesys v3.5.13
Last updated: 2019-10-22

OPC Communication Issues over LAN ^{CODESYS Forge talk (Thread)}
OPC Communication Issues over LAN
Last updated: 2013-03-28

Funktion Datenaustausch OPC über Symboldatei ^{CODESYS Forge talk (Thread)}
Funktion Datenaustausch OPC über Symboldatei
Last updated: 2010-12-14

Int16[] as Single OPC Item? ^{CODESYS Forge talk (Thread)}
Int16[] as Single OPC Item?
Last updated: 2017-09-18

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