# Open Port RS485

**URL:** <https://discourse.nodered.org/t/open-port-rs485/63429>\
**Category:** General\
**Created:** [3 June 2022 16:26 UTC](https://discourse.nodered.org/t/open-port-rs485/63429 "2022-06-03T16:26:52Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![SP-Mushrooms](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/sp-mushrooms/32/61710_2.png) [@SP-Mushrooms](https://discourse.nodered.org/u/SP-Mushrooms)\
**Post date:** [7 June 2022 01:53 UTC](https://discourse.nodered.org/t/open-port-rs485/63429/3 "2022-06-07T01:53:14Z")

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> [@How do I use serialport node to write to a RS485](https://discourse.nodered.org/t/how-do-i-use-serialport-node-to-write-to-a-rs485/63484/4):
>
> If you want to send 68 03 01 00 22 aa 04 9e to the serial port then use either a SERIAL Request or SERIAL Out node. Use an INJECT to send a buffer with 68 03 01 00 22 aa 04 9e As i said before... inject (set some data in the payload) point_right serial request (setup the correct com settings) point_right debug node (see if you get a reply) They have buffers (which are byte arays) There is no JavaScript required for this - it is a "no code" example... [image] ↑ Not a bit of JavaScri…

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