# How to change ip address in modbus tcp read node using a config file

**URL:** <https://discourse.nodered.org/t/how-to-change-ip-address-in-modbus-tcp-read-node-using-a-config-file/56214>\
**Category:** General\
**Created:** [6 January 2022 18:36 UTC](https://discourse.nodered.org/t/how-to-change-ip-address-in-modbus-tcp-read-node-using-a-config-file/56214 "2022-01-06T18:36:56Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![PAT](https://avatars.discourse-cdn.com/v4/letter/p/8491ac/32.png) [@PAT](https://discourse.nodered.org/u/PAT)\
**Post date:** [6 January 2022 18:36 UTC](https://discourse.nodered.org/t/how-to-change-ip-address-in-modbus-tcp-read-node-using-a-config-file/56214/1 "2022-01-06T18:36:56Z")

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Hi clever people

I know this topic has been addressed but not finding any clarity on the net,, I have a project going that has upto 5 modbus tcp devices connected. however their ip addresses could vary . all within same range eg 192.168.0.xxx. currently all 5 devices connect and work well. each device can set its own ip on its own interface based on avail ip's . is there any way to change the read node ip address "dynamically" like using a web page on the pi . TIA to all the node red Ninjas out there

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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:** [7 March 2022 18:37 UTC](https://discourse.nodered.org/t/how-to-change-ip-address-in-modbus-tcp-read-node-using-a-config-file/56214/2 "2022-03-07T18:37:10Z")

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