# CodeSys OPC Server Error

**URL:** <https://forum.inductiveautomation.com/t/codesys-opc-server-error/23849>\
**Category:** Ignition\
**Created:** [April 4, 2019, 2:03pm UTC](https://forum.inductiveautomation.com/t/codesys-opc-server-error/23849 "2019-04-04T14:03:03Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![mczaldivar](https://avatars.discourse-cdn.com/v4/letter/m/ea666f/32.png) [@mczaldivar](https://forum.inductiveautomation.com/u/mczaldivar)\
**Post date:** [April 4, 2019, 2:03pm UTC](https://forum.inductiveautomation.com/t/codesys-opc-server-error/23849/1 "2019-04-04T14:03:03Z")

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Hello, I am trying to connect to my codesys OPC server without success so far.  
I am using the Ignition OPC-COM and use Matrikon’s Explorer to verify that i can read tags and its works.  
Follow the log  
java.lang.IllegalStateException: The server did not indicate that it was ready to receive connections.  
at com.inductiveautomation.opccom.COMServerImpl$3.run(COMServerImpl.java:476)  
at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine$ThrowableCatchingRunnable.run(BasicExecutionEngine.java:518)  
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)  
at java.util.concurrent.FutureTask.run(Unknown Source)  
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(Unknown Source)  
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)  
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)  
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)  
at java.lang.Thread.run(Unknown Source)

7.9.10 (b2018112821)  
Oracle Corporation 1.8.0\_121

Thanks!