# RS485 at the Controller e-Series
**URL:** https://forum.universal-robots.com/t/rs485-at-the-controller-e-series/12751
**Category:** Technical Questions
**Created:** [March 4, 2021, 11:00pm UTC](https://forum.universal-robots.com/t/rs485-at-the-controller-e-series/12751 "2021-03-04T23:00:26Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@anon22196637](https://forum.universal-robots.com/u/anon22196637)
#### Post date: [March 4, 2021, 11:00pm UTC](https://forum.universal-robots.com/t/rs485-at-the-controller-e-series/12751/1 "2021-03-04T23:00:26Z")
Hello, I have an application for a device that needs RS485 at the controller of the e-Series Robot. Form reading the documentation, I know RS485 is configurable at the TCI at the wrist.
Can I somehow have RS485 at the controller using the Analog I/O, or do I need to setup another device to do that?
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### Author:  [@anon60474395](https://forum.universal-robots.com/u/anon60474395)
#### Post date: [March 5, 2021, 12:36pm UTC](https://forum.universal-robots.com/t/rs485-at-the-controller-e-series/12751/2 "2021-03-05T12:36:28Z")
I have never done this by myself, but I know there are adapters (physical parts) from RS485 to USB or Ethernet. Maybe it would be helpful for you.
[RS485 → USB example](http://pl.aliexpress.com/item/4000012110038.html?spm=a2g0o.productlist.0.0.2c954ab2LcoxwR&algo_pvid=8ebc7421-54ae-4c6a-9b5d-3abfb6b6d63b&algo_expid=8ebc7421-54ae-4c6a-9b5d-3abfb6b6d63b-2&btsid=2100bdf016149478580198302e82f7&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_)
[RS485 → Ethernet example](http://pl.aliexpress.com/item/32923113619.html?spm=a2g0o.productlist.0.0.5f80135747X9sG&algo_pvid=27b5413a-2f80-4ba8-9856-82d65c905f73&algo_expid=27b5413a-2f80-4ba8-9856-82d65c905f73-8&btsid=2100bde316149479823586637e095b&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_)
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### Author:  [@anon22196637](https://forum.universal-robots.com/u/anon22196637)
#### Post date: [March 5, 2021, 1:46pm UTC](https://forum.universal-robots.com/t/rs485-at-the-controller-e-series/12751/3 "2021-03-05T13:46:31Z")
Hey Tomasz, thank you for the response. I was thinking the same, to go around this limitation. I just had to ask if someone knew a way to use the internal RS485 module of the robot at the controller.
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### Author:  [@Ebbe](https://forum.universal-robots.com/u/Ebbe)
#### Post date: [March 5, 2021, 2:22pm UTC](https://forum.universal-robots.com/t/rs485-at-the-controller-e-series/12751/4 "2021-03-05T14:22:15Z")
Hi @anon22196637,
As @anon60474395 is stating you need an adapter, if you need the rs485 connection at the controller.
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### Author:  [@system](https://forum.universal-robots.com/u/system)
#### Post date: [March 7, 2021, 2:22pm UTC](https://forum.universal-robots.com/t/rs485-at-the-controller-e-series/12751/5 "2021-03-07T14:22:53Z")
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