# Compact logix control net to OPC UA adapter

**URL:** <https://forum.inductiveautomation.com/t/compact-logix-control-net-to-opc-ua-adapter/46903>\
**Category:** Ignition\
**Created:** [May 19, 2021, 6:22pm UTC](https://forum.inductiveautomation.com/t/compact-logix-control-net-to-opc-ua-adapter/46903 "2021-05-19T18:22:04Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![zacharyw.larson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/zacharyw.larson/32/23749_2.png) [@zacharyw.larson](https://forum.inductiveautomation.com/u/zacharyw.larson)\
**Post date:** [May 19, 2021, 6:22pm UTC](https://forum.inductiveautomation.com/t/compact-logix-control-net-to-opc-ua-adapter/46903/1 "2021-05-19T18:22:04Z")

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> [@Connecting to a ControlNet network?](http://forum.inductiveautomation.com/t/connecting-to-a-controlnet-network/5371):
>
> I have several PLC’s on a ControlNet network that I need to communicate with. What is the best way to set this up? is there an EtherNet to CNet bridge that can be configured? Do I need to go through RSLinx? If so, how do I set that up in the OPC-UA devices? Thanks, Scott

When the post says to "add a Control logix gateway", do they mean that the tags will need to be read into the Control Logix or is there a way to navigate through the gateway to the other devices to pull tags?

That would seem like a lot of traffic on the controlnet, so they mean just whatever is on the control logix will get pulled in right?

Sorry to ask such simple questions. I don't want to make any painful or expensive mistakes.

The link about the connection paths did not work for me.  
So I think maybe if I had that, it would make more sense to me.

[http://inductiveautomation.com/support/kb/149](http://inductiveautomation.com/support/kb/149)  
Just shows me the main support page

* * *

Old stuff

Can't read a compact logix control net system

Anyone have a better option than this adapter?  
[https://www.anybus.com/products/gateway-index/anybus-xgateway/detail/anybus-x-gateway-iiot---powerlink-slave-mqtt-and-opc-ua](https://www.anybus.com/products/gateway-index/anybus-xgateway/detail/anybus-x-gateway-iiot---powerlink-slave-mqtt-and-opc-ua)

controlnet to OPC UA  
450 bytes  
5Mb baud rate  
Requires setting the tags that are desired to pass through it though.

[https://docs.inductiveautomation.com:8443/display/DOC79/Browsing+and+Creating+OPC+Tags](https://docs.inductiveautomation.com:8443/display/DOC79/Browsing+and+Creating+OPC+Tags)  
this link did not work for me  
I wanted to see what it said though. It was in one of the similar posts.  
Thought maybe I could get a solution there.

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [May 19, 2021, 7:17pm UTC](https://forum.inductiveautomation.com/t/compact-logix-control-net-to-opc-ua-adapter/46903/2 "2021-05-19T19:17:55Z")

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A ControlLogix chassis that has an Ethernet/IP module and a ControlNet module is sufficient for Ignition to pass through to anything else on the ControlNet side. You don’t even need a processor in that first chassis, just the two comm modules.

When connecting from Ignition, give the IP address of the Ethernet/IP module. In the connection path, put `1 CC 2 NN 1 PP`, where “CC” is the slot of the controlnet module paired with that Ethernet/IP module, “NN” is the ControlNet node of the target, and “PP” is the processor slot number in the target.

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**Author:** ![zacharyw.larson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/zacharyw.larson/32/23749_2.png) [@zacharyw.larson](https://forum.inductiveautomation.com/u/zacharyw.larson)\
**Post date:** [May 19, 2021, 7:29pm UTC](https://forum.inductiveautomation.com/t/compact-logix-control-net-to-opc-ua-adapter/46903/3 "2021-05-19T19:29:01Z")

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Thanks very much
