# Plugin about RS485 communication

**URL:** https://forum.universal-robots.com/t/plugin-about-rs485-communication/7071
**Category:** Java
**Created:** [April 22, 2020, 8:49am UTC](https://forum.universal-robots.com/t/plugin-about-rs485-communication/7071 "2020-04-22T08:49:07Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![836787153](https://avatars.discourse-cdn.com/v4/letter/8/f0a364/32.png) [@836787153](https://forum.universal-robots.com/u/836787153)
#### Post date: [April 22, 2020, 8:49am UTC](https://forum.universal-robots.com/t/plugin-about-rs485-communication/7071/1 "2020-04-22T08:49:07Z")

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I want to develop a plugin about RS485 communication between UR-robot and end effector.  
How can I complete it? And I know the serial port is “/dev/ttyTool” for tool.  
Is there any specific example on how to use the robots rs485 tool communication or serial-port communication?

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### Author: ![inu](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.universal-robots.com/inu/32/732_2.png) [@inu](https://forum.universal-robots.com/u/inu)
#### Post date: [April 29, 2020, 7:32pm UTC](https://forum.universal-robots.com/t/plugin-about-rs485-communication/7071/2 "2020-04-29T19:32:49Z")

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Hello @836787153,

There’s some information scattered in the forum, @jbm has an example he had started, this may be a good start if you are looking to expand on it.

Check it out [here](https://github.com/BomMadsen/URCap-ToolCommunicationInterface).