https://forge.codesys.com/forge/talk/Engineering/thread/815a136787/2022-02-04T22:16:17.180000ZRecent posts to Lost connection to PLC XC303 Eaton2022-02-04T22:16:17.180000Z2022-02-04T22:16:17.180000Zelee123https://forge.codesys.com/u/elee123/https://forge.codesys.comd87d6c70529b02643a38d02c6eabe792129b62c7

<div class="markdown_content"><p>Hi all,</p> <p>I am hoping you will be able to advise on why I have lost the connection via codesys to my eaton XC303 PLC.<br/> I was connected and monitoring values and then I was updating an HMI that uses the codesys protocol to integrate tags. When I downloaded the new HMI project I lost the connection to the PLC.<br/> Eaton support answer is to power cycle the PLC, however this is a remote system and don't have a means to do so.</p> <p>Is there anything remotely I can get to try to restore this connection, without a reboot.</p> <p>I am not an expert but it sounds like the connection dropped suddenly (for what reason I don't know) but it was not disconnected properly and something in the PLC has hung up.<br/> As far as I can tell the PLC is still running - webvisu works, modbus to another PLC on the same network is working and I can ping the PLC.</p> <p>As another note that other PLC on the same network I can connect via codesys without issue. Connecting via Windows VPN.</p> <p>I have had the connection running for some months now without issue, until I tried to update the HMI it seems to have fallen over.</p> <p>Let me know what details are needed to try and diagnose this, really appreciate the help.</p> <p>Thanks</p></div>