# Pass NR-data to modbus-tcp-client?

**URL:** <https://discourse.nodered.org/t/pass-nr-data-to-modbus-tcp-client/34796>\
**Category:** General\
**Created:** [25 October 2020 21:12 UTC](https://discourse.nodered.org/t/pass-nr-data-to-modbus-tcp-client/34796 "2020-10-25T21:12:20Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![syma33](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/syma33/32/30665_2.png) [@syma33](https://discourse.nodered.org/u/syma33)\
**Post date:** [25 October 2020 21:12 UTC](https://discourse.nodered.org/t/pass-nr-data-to-modbus-tcp-client/34796/1 "2020-10-25T21:12:21Z")

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i have a HMI where i can setup multiple modbus TCPmasters to listen or write data to (for controling the individual technical equipment)... now i got many temperature sensor in my NR-setup i do like to pass to the HMI that only speaks modbus-tcp...

how can i put NR-data into a own holding register and use my HMI to call for it?

reading and writing from NR to a TCP-masters are no problem... but does it exist a module that enables NR act as a TCPmaster? 🤔

thanks for reply.

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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:** [25 October 2020 21:47 UTC](https://discourse.nodered.org/t/pass-nr-data-to-modbus-tcp-client/34796/2 "2020-10-25T21:47:33Z")

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Have you tried `node-red-contrib-modbus` it has client and server nodes

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**Author:** ![syma33](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/syma33/32/30665_2.png) [@syma33](https://discourse.nodered.org/u/syma33)\
**Post date:** [27 October 2020 15:50 UTC](https://discourse.nodered.org/t/pass-nr-data-to-modbus-tcp-client/34796/3 "2020-10-27T15:50:16Z")

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> [@Steve-Mcl](#):
>
> it has client and server nodes

yes im working with that module, i might have been too hasty to giving up. Found some examples in the doc that might work. (does not include what i ask for but might be a workaround)

i come back with progress...

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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:** [27 October 2020 16:26 UTC](https://discourse.nodered.org/t/pass-nr-data-to-modbus-tcp-client/34796/4 "2020-10-27T16:26:59Z")

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Did you look at the examples?

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/f/c/fce19c9ccc074891aebfdd7e1b5ac44cb7a183d1.png)

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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:** [26 December 2020 16:27 UTC](https://discourse.nodered.org/t/pass-nr-data-to-modbus-tcp-client/34796/5 "2020-12-26T16:27:02Z")

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Closed on 26 December 2020 16:27 UTC

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