# Node-red-contrib-cip-ethernet-ip Multiple Endpoints

**URL:** <https://discourse.nodered.org/t/node-red-contrib-cip-ethernet-ip-multiple-endpoints/98160>\
**Category:** General\
**Created:** [15 July 2025 20:07 UTC](https://discourse.nodered.org/t/node-red-contrib-cip-ethernet-ip-multiple-endpoints/98160 "2025-07-15T20:07:18Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![BrallanH2](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/brallanh2/32/40801_2.png) [@BrallanH2](https://discourse.nodered.org/u/BrallanH2)\
**Post date:** [15 July 2025 20:07 UTC](https://discourse.nodered.org/t/node-red-contrib-cip-ethernet-ip-multiple-endpoints/98160/1 "2025-07-15T20:07:18Z")

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Greetings,

I have had a system working for a few years writing/reading from a ControlLogix PLC (1756-L73 and 1756-EN2T). I can't thank the contributors and everyone involved enough.

On a Windows Server 2019 VM that can never reach the internet:  
Node Red V2.2.2  
Node.js V 16.14.0

Recently, the amount of data required to and from an additional CompactLogix PLC (L306ER) has grown and the complexity of what the boss needs has gotten more complex, so I wanted to stop messaging to/from the ControlLogix PLC, using it as a data concentrator and have Node-Red communicate directly to the CompactLogix PLC (in my case, PLCs are on the same subnet).

**Has anyone successfully used node-red-contrib-cip-ethernet-ip or node-red-contrib-cip-st-ethernet-ip using multiple endpoints.**

When I tried adding the endpoint for the CompactLogix PLC, I lost connection to the ControlLogix PLC and I don't remember now if I ever tried to just have the CompactLogix PLC without the ControlLogix endpoint enabled. I currently have the ControlLogix endpoint reading over 1000 tags and writing a few. I also have UDP messages to/from the same ControlLogix PLC to handle some Strings. When I put this in, node-red-contrib-cip-st-ethernet-ip wasn't available. I also use Node-Red to send "RAW" data (over TCP/IP) to a label printer on the same network but routed to a different subnet.

Also, please let me know if there is a better way to pose or classify my question.

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [13 October 2025 20:07 UTC](https://discourse.nodered.org/t/node-red-contrib-cip-ethernet-ip-multiple-endpoints/98160/2 "2025-10-13T20:07:43Z")

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