# OPC server connection

**URL:** <https://forum.inductiveautomation.com/t/opc-server-connection/6047>\
**Category:** General Discussion\
**Created:** [March 18, 2013, 10:37am UTC](https://forum.inductiveautomation.com/t/opc-server-connection/6047 "2013-03-18T10:37:44Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![Niks](https://avatars.discourse-cdn.com/v4/letter/n/e19b73/32.png) [@Niks](https://forum.inductiveautomation.com/u/Niks)\
**Post date:** [March 18, 2013, 10:37am UTC](https://forum.inductiveautomation.com/t/opc-server-connection/6047/1 "2013-03-18T10:37:44Z")

</div>

Hello All,

In Ignition 7.5.6 my OPC server connection occurs faulted  
I kept all setting by default only i changed  
1.Host-“localhost” and  
2.Port-“4096”.  
Earlier it shows connected but after that I took the backup and restore it again after that it never shows connected.  
I take “Restart” from “Ignition Control Utility” still it is not connected.  
Please suggest me

Regards,  
Nikhil

---

<div class="post-metadata">

**Author:** ![greg.simpson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/greg.simpson/32/3135_2.png) [@greg.simpson](https://forum.inductiveautomation.com/u/greg.simpson)\
**Post date:** [March 18, 2013, 3:27pm UTC](https://forum.inductiveautomation.com/t/opc-server-connection/6047/2 "2013-03-18T15:27:44Z")

</div>

Try placing the IP address of the computer in place of localhost. If you are running a machine with multiple NICs pick one of the IP address’s to put in place of localhost.

---

<div class="post-metadata">

**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [March 18, 2013, 3:32pm UTC](https://forum.inductiveautomation.com/t/opc-server-connection/6047/3 "2013-03-18T15:32:23Z")

</div>

Also check the ‘Endpoint Address’ in the UA server settings (not the connection, but the server itself) to make sure it’s still correct. It’s likely that you’ve brought in some other IP address from the backup you restored.

---

<div class="post-metadata">

**Author:** ![Niks](https://avatars.discourse-cdn.com/v4/letter/n/e19b73/32.png) [@Niks](https://forum.inductiveautomation.com/u/Niks)\
**Post date:** [March 19, 2013, 12:24pm UTC](https://forum.inductiveautomation.com/t/opc-server-connection/6047/4 "2013-03-19T12:24:04Z")

</div>

I put IP address at “HOST” as per Greg suggested. and checked “Endpoint Address” in “UA server setting” still it not showing connected.

And I think the “Endpoint address” / “UA server server settings” doesn’t make any changes in OPC server connection because i checked and edited when OPC server is connected.

Please let me know if any other setting is required.