# Ignition (OPC- UA device connection)

**URL:** <https://forum.inductiveautomation.com/t/ignition-opc-ua-device-connection/37858>\
**Category:** Ignition\
**Tags:** ignition80\
**Created:** [August 18, 2020, 2:12pm UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-device-connection/37858 "2020-08-18T14:12:00Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![man.nguyen-van](https://avatars.discourse-cdn.com/v4/letter/m/e8c25b/32.png) [@man.nguyen-van](https://forum.inductiveautomation.com/u/man.nguyen-van)\
**Post date:** [August 18, 2020, 2:12pm UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-device-connection/37858/1 "2020-08-18T14:12:00Z")

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Hello everyone,  
Can you help me, I have a question:  
In ignition (OPC UA\> Device Connections). a maximum of how many devices can be connected ?

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**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:** [August 18, 2020, 2:27pm UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-device-connection/37858/2 "2020-08-18T14:27:47Z")

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There’s no limit unless you’re using Ignition Edge edition.

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**Author:** ![wdougmiller](https://avatars.discourse-cdn.com/v4/letter/w/a9a28c/32.png) [@wdougmiller](https://forum.inductiveautomation.com/u/wdougmiller)\
**Post date:** [February 17, 2021, 2:08am UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-device-connection/37858/3 "2021-02-17T02:08:05Z")

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What is the limit on Ignition Edge?

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**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:** [February 17, 2021, 2:18am UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-device-connection/37858/4 "2021-02-17T02:18:26Z")

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It’s a license parameter. I think it’s 2 by default on the editions that are limited.

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**Author:** ![wdougmiller](https://avatars.discourse-cdn.com/v4/letter/w/a9a28c/32.png) [@wdougmiller](https://forum.inductiveautomation.com/u/wdougmiller)\
**Post date:** [February 17, 2021, 7:30am UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-device-connection/37858/5 "2021-02-17T07:30:11Z")

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I’m hoping it’s just a license parameter and can be extended. Just 2 won’t get me very far. ☹ I recognize that there are performance issues to be considered, just something to work through.

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**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:** [February 17, 2021, 2:00pm UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-device-connection/37858/6 "2021-02-17T14:00:13Z")

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It’s not necessarily performance, although that can be an issue if you’re running Edge on really low power hardware, but I think it mostly has to do with the low price of Edge compared to regular Ignition or buying the OPC UA module + driver modules.

I’d get in touch with your sales rep though. Edge stuff changes all the time and I don’t know what the current situation is.

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**Author:** ![wdougmiller](https://avatars.discourse-cdn.com/v4/letter/w/a9a28c/32.png) [@wdougmiller](https://forum.inductiveautomation.com/u/wdougmiller)\
**Post date:** [February 17, 2021, 3:05pm UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-device-connection/37858/7 "2021-02-17T15:05:34Z")

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Thank you for the prompt responses, much appreciated!