# I changed to UDP From TCP for Mitsubhishi PLC Fx3u but did not worked in Nodered

**URL:** <https://discourse.nodered.org/t/i-changed-to-udp-from-tcp-for-mitsubhishi-plc-fx3u-but-did-not-worked-in-nodered/99518>\
**Category:** Industrial\
**Created:** [27 October 2025 14:25 UTC](https://discourse.nodered.org/t/i-changed-to-udp-from-tcp-for-mitsubhishi-plc-fx3u-but-did-not-worked-in-nodered/99518 "2025-10-27T14:25:24Z")\
**Posts on this page:** 5\
**Page:** 2

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**Author:** ![Jayeshpitale1](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/jayeshpitale1/32/70216_2.png) [@Jayeshpitale1](https://discourse.nodered.org/u/Jayeshpitale1)\
**Post date:** [10 November 2025 16:47 UTC](https://discourse.nodered.org/t/i-changed-to-udp-from-tcp-for-mitsubhishi-plc-fx3u-but-did-not-worked-in-nodered/99518/21 "2025-11-10T16:47:47Z")

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@Steve-Mcl ,  
I tried Kepserver it worked in that but not working in NodeRED What should i do the PLC guy telling me it working in Kepserver so it should work in NodeRED

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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:** [10 November 2025 16:53 UTC](https://discourse.nodered.org/t/i-changed-to-udp-from-tcp-for-mitsubhishi-plc-fx3u-but-did-not-worked-in-nodered/99518/22 "2025-11-10T16:53:20Z")

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> [@Jayeshpitale1](#):
>
> I tried Kepserver it worked

Tried what?

Is kepware on same network? Same physical network? Is kepware using UDP?

Show me all the settings on both kepware and PLC and what nodered settings you are trying.

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<div class="post-metadata">

**Author:** ![Jayeshpitale1](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/jayeshpitale1/32/70216_2.png) [@Jayeshpitale1](https://discourse.nodered.org/u/Jayeshpitale1)\
**Post date:** [10 November 2025 17:19 UTC](https://discourse.nodered.org/t/i-changed-to-udp-from-tcp-for-mitsubhishi-plc-fx3u-but-did-not-worked-in-nodered/99518/23 "2025-11-10T17:19:43Z")

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@Steve-Mcl ,  
i Tried the 5000 port and kepware worked with message good  
Below is setting for kepware

 ![image (1)](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/f/b/fb40d56ffa5090408b16f8f741dec11314c44a1c.png)  
 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/8/5/859e4384a7bdd9dfb4278132ea67457eccf62ceb.png)

if it can work then why cant the nodeRED  
i think so something is getting wrong

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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:** [10 November 2025 17:57 UTC](https://discourse.nodered.org/t/i-changed-to-udp-from-tcp-for-mitsubhishi-plc-fx3u-but-did-not-worked-in-nodered/99518/24 "2025-11-10T17:57:46Z")

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please answer all questions.

> [@Steve-Mcl](#):
>
> Is kepware on same network?

> [@Steve-Mcl](#):
>
> Same physical network?

> [@Steve-Mcl](#):
>
> Show me all the settings on both kepware and PLC and what nodered settings you are trying.

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<div class="post-metadata">

**Author:** ![Jayeshpitale1](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/jayeshpitale1/32/70216_2.png) [@Jayeshpitale1](https://discourse.nodered.org/u/Jayeshpitale1)\
**Post date:** [10 November 2025 18:00 UTC](https://discourse.nodered.org/t/i-changed-to-udp-from-tcp-for-mitsubhishi-plc-fx3u-but-did-not-worked-in-nodered/99518/25 "2025-11-10T18:00:59Z")

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> [@Steve-Mcl](#):
>
> Is kepware on same network?

yes same network via lan

> [@Steve-Mcl](#):
>
> > [@Steve-Mcl](#):
> >
> > Same physical network?

yes

> [@Steve-Mcl](#):
>
> > [@Steve-Mcl](#):
> >
> > Show me all the settings on both kepware and PLC and what nodered settings you are trying.

i already posted everything above

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