# Omron CJ2M CPU33 Connected! Cannot read data

**URL:** <https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604>\
**Category:** Industrial\
**Created:** [28 September 2021 07:54 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604 "2021-09-28T07:54:52Z")\
**Posts on this page:** 5\
**Page:** 2

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**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [30 September 2021 06:31 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/21 "2021-09-30T06:31:47Z")

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> [@DonCube](#):
>
> Do i need to change something in this setting?
> 
> ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/1/3/132e1bf9e030228c1ba744142294ef48183946a0.png)

No. That is purely for cx-programmer to connect to PLC. But you can use that to test connection settings by changing to Ethernet mode and entering the expected settings.

> [@DonCube](#):
>
> i have already change the dials to 0B and still i cannot read data

Did you power PLC off then on after changing?

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<div class="post-metadata">

**Author:** ![DonCube](https://avatars.discourse-cdn.com/v4/letter/d/c37758/32.png) [@DonCube](https://discourse.nodered.org/u/DonCube)\
**Post date:** [30 September 2021 07:02 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/22 "2021-09-30T07:02:02Z")

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yes, i power off/on the plc

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<div class="post-metadata">

**Author:** ![DonCube](https://avatars.discourse-cdn.com/v4/letter/d/c37758/32.png) [@DonCube](https://discourse.nodered.org/u/DonCube)\
**Post date:** [30 September 2021 10:30 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/23 "2021-09-30T10:30:52Z")

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Hello steve, below is my connection setup.. can you help me to figure out why i cannot connect using the UDP..i try TCP it can connect but cannat read data.see image below for reference  
Note: the data type in the setup in PLC for D3552 is CHANNEL..im not familiar with this..

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/d/9/d9a43f201e974666cced7eb115f39c438485cecf.jpeg)

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<div class="post-metadata">

**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [1 October 2021 22:38 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/24 "2021-10-01T22:38:41Z")

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This issue was resolved outside of the forum.

For anyone reading, the issue was @DonCube running node-red V2.x + nodejs V10

Both node-red v2.x and `node-red-contrib-omron-fins` require nodejs V12+

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<div class="post-metadata">

**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [1 October 2021 22:38 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/25 "2021-10-01T22:38:54Z")

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Closed on 1 October 2021 22:38 UTC



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