# ExaOPC connection **URL:** \ **Category:** General Discussion\ **Created:** [December 11, 2018, 8:29pm UTC](https://forum.inductiveautomation.com/t/exaopc-connection/21349 "2018-12-11T20:29:09Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![shibubalaji](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/shibubalaji/32/9165_2.png) [@shibubalaji](https://forum.inductiveautomation.com/u/shibubalaji)\ **Post date:** [December 11, 2018, 8:29pm UTC](https://forum.inductiveautomation.com/t/exaopc-connection/21349/1 "2018-12-11T20:29:09Z")
Has any one come across with Ignition Server to ExaOPC Server. I have a yokogawa centum VP and would like to make connection to its ExaOPC server from ignition and not sure how to establish this. I made several attempt using the document of Centum VP ExaOPC , but was not successful. If any one could share, would be a great help. ---
**Author:** ![shibubalaji](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/shibubalaji/32/9165_2.png) [@shibubalaji](https://forum.inductiveautomation.com/u/shibubalaji)\ **Post date:** [December 22, 2018, 2:46am UTC](https://forum.inductiveautomation.com/t/exaopc-connection/21349/2 "2018-12-22T02:46:58Z")
I have not seen any response to this query? No one knows about this ExaOPC? ---
**Author:** ![ingraham](https://avatars.discourse-cdn.com/v4/letter/i/3ab097/32.png) [@ingraham](https://forum.inductiveautomation.com/u/ingraham)\ **Post date:** [December 27, 2018, 3:49pm UTC](https://forum.inductiveautomation.com/t/exaopc-connection/21349/3 "2018-12-27T15:49:05Z")
I don’t know ExaOPC specifically. One thing I did notice was that it use OPC DA, not UA. In order to use OPC DA with Ignition, you need to install the OPC Core Components from the OPC Foundation. There’s some information in the Ignition User Manual on this. See the section on [OPC COM](https://docs.inductiveautomation.com/display/DOC79/OPC+COM) for more information. There are also a few forum posts about OPC DA, although none of them about ExaOPC specifically. ---
**Author:** ![shibubalaji](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/shibubalaji/32/9165_2.png) [@shibubalaji](https://forum.inductiveautomation.com/u/shibubalaji)\ **Post date:** [May 21, 2019, 4:39pm UTC](https://forum.inductiveautomation.com/t/exaopc-connection/21349/4 "2019-05-21T16:39:31Z")
Ingraham, You are correct . This is OPC DA COM connection. I have made several attempt to do this to Yokogawa and unfortunately wasn’t successful, though had correct program ID and credentials. Any ways, still go to fight with it to see if it can be connected. But this might be a stupid question that, why Ignition doesn’t have a driver to connect to the Centum VP controller as device. ? May be integrity issue for yokogawa to use a third party driver. Not sure. ---
**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:** [May 21, 2019, 4:42pm UTC](https://forum.inductiveautomation.com/t/exaopc-connection/21349/5 "2019-05-21T16:42:58Z")
> [@shibubalaji](#): > > But this might be a stupid question that, why Ignition doesn’t have a driver to connect to the Centum VP controller as device. ? Developing a driver is a big investment in developer time, support time, equipment, and training. I've never heard of or seen a Centrum VP controller until you asked about it, so... it doesn't make much sense. Especially since there's already an OPC server from the manufacturer themselves. ---
**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:** [May 21, 2019, 4:56pm UTC](https://forum.inductiveautomation.com/t/exaopc-connection/21349/7 "2019-05-21T16:56:50Z")
> [@shibubalaji](#): > > Sorry for being stupid… Not a stupid question, don't be so hard on yourself. ---
**Author:** ![ingraham](https://avatars.discourse-cdn.com/v4/letter/i/3ab097/32.png) [@ingraham](https://forum.inductiveautomation.com/u/ingraham)\ **Post date:** [May 21, 2019, 10:01pm UTC](https://forum.inductiveautomation.com/t/exaopc-connection/21349/8 "2019-05-21T22:01:20Z")
Just to double check, did you install the OPC Core Components? I agree with Kevin about economics being the reason for not including a Yokogawa. There aren’t enough people asking for it to make it worthwhile for Inductive to add it. Is Modbus/TCP an option? Most DCS systems support it at least nominally. Ignition does have native support for Modbus/TCP. ---
**Author:** ![diat150](https://avatars.discourse-cdn.com/v4/letter/d/a587f6/32.png) [@diat150](https://forum.inductiveautomation.com/u/diat150)\ **Post date:** [May 22, 2019, 12:27am UTC](https://forum.inductiveautomation.com/t/exaopc-connection/21349/9 "2019-05-22T00:27:07Z")
if you install matrikon opc explorer on the computer that has exaopc installed on it, can you see the exaopc server listed in the opc servers and can you connect to it? thats the first place i start. ---
**Author:** ![zarei.gh](https://avatars.discourse-cdn.com/v4/letter/z/d9b06d/32.png) [@zarei.gh](https://forum.inductiveautomation.com/u/zarei.gh)\ **Post date:** [June 30, 2020, 8:16am UTC](https://forum.inductiveautomation.com/t/exaopc-connection/21349/10 "2020-06-30T08:16:29Z")
I have some experince with Exaopc. which version of Exaopc do you use? ---
**Author:** ![Mohammed\_Drai](https://avatars.discourse-cdn.com/v4/letter/m/da6949/32.png) [@Mohammed\_Drai](https://forum.inductiveautomation.com/u/Mohammed_Drai)\ **Post date:** [January 24, 2025, 2:07pm UTC](https://forum.inductiveautomation.com/t/exaopc-connection/21349/11 "2025-01-24T14:07:12Z")
Please sir can you help me…. I want to add 2 new controllers FCS & SCS in exaopc. Any idea please ---
**Author:** ![Mohammed\_Drai](https://avatars.discourse-cdn.com/v4/letter/m/da6949/32.png) [@Mohammed\_Drai](https://forum.inductiveautomation.com/u/Mohammed_Drai)\ **Post date:** [January 24, 2025, 9:17pm UTC](https://forum.inductiveautomation.com/t/exaopc-connection/21349/12 "2025-01-24T21:17:45Z")
Hi