# Modbus and Kohler RDC2 controller

**URL:** <https://discourse.nodered.org/t/modbus-and-kohler-rdc2-controller/95820>\
**Category:** General\
**Created:** [6 March 2025 06:58 UTC](https://discourse.nodered.org/t/modbus-and-kohler-rdc2-controller/95820 "2025-03-06T06:58:43Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![k5map](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/k5map/32/47681_2.png) [@k5map](https://discourse.nodered.org/u/k5map)\
**Post date:** [6 March 2025 06:58 UTC](https://discourse.nodered.org/t/modbus-and-kohler-rdc2-controller/95820/1 "2025-03-06T06:58:43Z")

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Has anyone successfully used one of the Modbus nodes and communicated to a Kohler RDC2 controller over TCP?

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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:** [6 March 2025 07:29 UTC](https://discourse.nodered.org/t/modbus-and-kohler-rdc2-controller/95820/2 "2025-03-06T07:29:45Z")

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> [@k5map](#):
>
> Has anyone successfully used one of the Modbus nodes

Many. In particular `node-red-contrib-modbus`

> [@k5map](#):
>
> and communicated to a Kohler RDC2

This is quite specific

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/e/5/e513cd48dfbab3d9e813837fccbc0aee435ea849.png)

but the make and model _should not really be a factor_ since Modbus TCP is a protocol.

* * *

What have you tried?

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [4 June 2025 07:30 UTC](https://discourse.nodered.org/t/modbus-and-kohler-rdc2-controller/95820/3 "2025-06-04T07:30:20Z")

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