# Replace opc classes - module ignition 7.9 to 8.0

**URL:** <https://forum.inductiveautomation.com/t/replace-opc-classes-module-ignition-7-9-to-8-0/25143>\
**Category:** Module Development\
**Tags:** ignition80\
**Created:** [May 20, 2019, 9:28am UTC](https://forum.inductiveautomation.com/t/replace-opc-classes-module-ignition-7-9-to-8-0/25143 "2019-05-20T09:28:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\
**Post date:** [May 20, 2019, 9:28am UTC](https://forum.inductiveautomation.com/t/replace-opc-classes-module-ignition-7-9-to-8-0/25143/1 "2019-05-20T09:28:27Z")

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Hi @Kevin.Herron,

is there any substitute in 8.0 for these 7.9 classes :

```auto
com.inductiveautomation.ignition.gateway.opc.OPCManager;
com.inductiveautomation.ignition.gateway.opc.SubscribableNode;`

```

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<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:** [May 20, 2019, 11:52am UTC](https://forum.inductiveautomation.com/t/replace-opc-classes-module-ignition-7-9-to-8-0/25143/2 "2019-05-20T11:52:33Z")

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[http://files.inductiveautomation.com/sdk/javadoc/ignition80/8.0.1/com/inductiveautomation/ignition/gateway/opc/OpcConnectionManager.html](http://files.inductiveautomation.com/sdk/javadoc/ignition80/8.0.1/com/inductiveautomation/ignition/gateway/opc/OpcConnectionManager.html)

[http://files.inductiveautomation.com/sdk/javadoc/ignition80/8.0.1/com/inductiveautomation/ignition/gateway/opc/OpcSubscriptionNode.html](http://files.inductiveautomation.com/sdk/javadoc/ignition80/8.0.1/com/inductiveautomation/ignition/gateway/opc/OpcSubscriptionNode.html)