# How to send variables to display in hmi siemens with modbus?

**URL:** <https://discourse.nodered.org/t/how-to-send-variables-to-display-in-hmi-siemens-with-modbus/73865>\
**Category:** General\
**Tags:** node-red-dashboard, modbus, opcua\
**Created:** [18 January 2023 13:45 UTC](https://discourse.nodered.org/t/how-to-send-variables-to-display-in-hmi-siemens-with-modbus/73865 "2023-01-18T13:45:04Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ahmedt04](https://avatars.discourse-cdn.com/v4/letter/a/9fc348/32.png) [@ahmedt04](https://discourse.nodered.org/u/ahmedt04)\
**Post date:** [18 January 2023 13:45 UTC](https://discourse.nodered.org/t/how-to-send-variables-to-display-in-hmi-siemens-with-modbus/73865/1 "2023-01-18T13:45:04Z")

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Hello,  
i'm using node-red to get some variables from a plc via OpcUa i'm using an iot2050,  
I managed to read the variables I need now I should send these variables to an hmi panel to be able to read them on the panel,  
I have to do it in modbus, but I've never used modbus, does anyone know how to do it?  
thank you.

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**Author:** ![ahmedt04](https://avatars.discourse-cdn.com/v4/letter/a/9fc348/32.png) [@ahmedt04](https://discourse.nodered.org/u/ahmedt04)\
**Post date:** [27 January 2023 08:04 UTC](https://discourse.nodered.org/t/how-to-send-variables-to-display-in-hmi-siemens-with-modbus/73865/2 "2023-01-27T08:04:55Z")

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Resolved.

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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:** [10 February 2023 08:05 UTC](https://discourse.nodered.org/t/how-to-send-variables-to-display-in-hmi-siemens-with-modbus/73865/3 "2023-02-10T08:05:09Z")

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