# Modbus RTU to OPC-UA conversion

**URL:** <https://discourse.nodered.org/t/modbus-rtu-to-opc-ua-conversion/40829>\
**Category:** General\
**Created:** [11 February 2021 16:15 UTC](https://discourse.nodered.org/t/modbus-rtu-to-opc-ua-conversion/40829 "2021-02-11T16:15:18Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Industrialogics](https://avatars.discourse-cdn.com/v4/letter/i/7ba0ec/32.png) [@Industrialogics](https://discourse.nodered.org/u/Industrialogics)\
**Post date:** [11 February 2021 16:15 UTC](https://discourse.nodered.org/t/modbus-rtu-to-opc-ua-conversion/40829/1 "2021-02-11T16:15:18Z")

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Looking to use Raspberry Pi as edge device. Want to import Modbus RTU/ASCII data from legacy controllers, format and wrap in OPC-UA in order to transmit to Amazon AWS cloud service.  
Would Node-Red be capable of handling such a conversion?

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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:** [11 February 2021 16:27 UTC](https://discourse.nodered.org/t/modbus-rtu-to-opc-ua-conversion/40829/2 "2021-02-11T16:27:22Z")

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> [@Industrialogics](#):
>
> Would Node-Red be capable of handling such a conversion

Yes. Node-red does modbus and OPC UA. Just be sensible when requesting data from modbus devices (favour reading many items in a single modbus request over reading many single values). Node-red-contrib-buffer-parser can assist in converting the raw modbus values to proper types before serving via OPC UA.

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**Author:** ![Industrialogics](https://avatars.discourse-cdn.com/v4/letter/i/7ba0ec/32.png) [@Industrialogics](https://discourse.nodered.org/u/Industrialogics)\
**Post date:** [11 February 2021 16:41 UTC](https://discourse.nodered.org/t/modbus-rtu-to-opc-ua-conversion/40829/3 "2021-02-11T16:41:59Z")

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Thank you...

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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:** [12 April 2021 16:42 UTC](https://discourse.nodered.org/t/modbus-rtu-to-opc-ua-conversion/40829/4 "2021-04-12T16:42:32Z")

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