# Accessing two serial ports simultaneously

**URL:** <https://discourse.nodered.org/t/accessing-two-serial-ports-simultaneously/6393>\
**Category:** General\
**Created:** [4 January 2019 15:33 UTC](https://discourse.nodered.org/t/accessing-two-serial-ports-simultaneously/6393 "2019-01-04T15:33:38Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![gsr](https://avatars.discourse-cdn.com/v4/letter/g/eada6e/32.png) [@gsr](https://discourse.nodered.org/u/gsr)\
**Post date:** [4 January 2019 15:33 UTC](https://discourse.nodered.org/t/accessing-two-serial-ports-simultaneously/6393/1 "2019-01-04T15:33:38Z")

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Hi,  
How to configure node-red for two serial ports?

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [4 January 2019 15:54 UTC](https://discourse.nodered.org/t/accessing-two-serial-ports-simultaneously/6393/2 "2019-01-04T15:54:58Z")

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> [@gsr](#):
>
> How to configure node-red for two serial ports?

There should be no problem configuring two serial ports. What issue are you having?

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**Author:** ![JayDickson](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/jaydickson/32/90592_2.png) [@JayDickson](https://discourse.nodered.org/u/JayDickson)\
**Post date:** [4 January 2019 16:55 UTC](https://discourse.nodered.org/t/accessing-two-serial-ports-simultaneously/6393/3 "2019-01-04T16:55:10Z")

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First go to the serial node config ![34%20AM](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/c/cba1c72dcb73addf816625284eb7871f65b608d9.png)

next select add new port and click the edit button ![51%20AM](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/3/3538496f84c169b7021db202c25d5f9ecdf9d96c.png)

Fill out the path to a serial port on your host system and click add

 ![53%20AM](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/b/bbcfd3c8b4a0cab9bfdca4cdb70bd3267a054629.png)

That port will now show up in the dropdown to be selected by serial nodes ![07%20AM](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/5/51e70ba1f3eed38686f529e874df99595c30206a.png)

Repeat for each port as needed.

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<div class="post-metadata">

**Author:** ![gsr](https://avatars.discourse-cdn.com/v4/letter/g/eada6e/32.png) [@gsr](https://discourse.nodered.org/u/gsr)\
**Post date:** [5 January 2019 09:13 UTC](https://discourse.nodered.org/t/accessing-two-serial-ports-simultaneously/6393/4 "2019-01-05T09:13:09Z")

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> [@Colin](#):
>
> d be no problem configuring two serial ports. What issue are you having?

when I change com port number other configured port details are changing.

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**Author:** ![gsr](https://avatars.discourse-cdn.com/v4/letter/g/eada6e/32.png) [@gsr](https://discourse.nodered.org/u/gsr)\
**Post date:** [5 January 2019 09:15 UTC](https://discourse.nodered.org/t/accessing-two-serial-ports-simultaneously/6393/5 "2019-01-05T09:15:01Z")

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Thanks you very much