# How to get image string through tool communication(RS485)

**URL:** <https://forum.universal-robots.com/t/how-to-get-image-string-through-tool-communication-rs485/15876>\
**Category:** ROS\
**Created:** [August 10, 2021, 6:54am UTC](https://forum.universal-robots.com/t/how-to-get-image-string-through-tool-communication-rs485/15876 "2021-08-10T06:54:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![anon41275935](https://avatars.discourse-cdn.com/v4/letter/a/df788c/32.png) [@anon41275935](https://forum.universal-robots.com/u/anon41275935)\
**Post date:** [August 10, 2021, 6:54am UTC](https://forum.universal-robots.com/t/how-to-get-image-string-through-tool-communication-rs485/15876/1 "2021-08-10T06:54:39Z")

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HI,

I’m trying to get image string from USB camera connected to Tool I/O(RS485)  
I have an [RS485 to USB adapter](https://www.amazon.com/GearMo-Converter-Terminals-Windows-Support/dp/B005CPI0JQ/ref=sr_1_15?dchild=1&keywords=usb+to+rs485+adapter&qid=1628576929&sr=8-15) in the tool that I can connect the TCI RS485+/RS485- wire pair to.

To receive pictures from the tool to the usb camera, I need to send a commend to the camera via RS485.  
I installed [rs485-1.0.urcap] and tried to connect robot ip with tool\_tcp\_port(54321) but it didn’t work. ([https://github.com/UniversalRobots/Universal\_Robots\_ROS\_Driver/blob/master/ur\_robot\_driver/resources/rs485-1.0.urcap](https://github.com/UniversalRobots/Universal_Robots_ROS_Driver/blob/master/ur_robot_driver/resources/rs485-1.0.urcap))

The camera connected to the usb port of the CB3 was able to receive video streaming via ROS.

Do I miss something?

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**Author:** ![Ebbe](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.universal-robots.com/ebbe/32/1413_2.png) [@Ebbe](https://forum.universal-robots.com/u/Ebbe)\
**Post date:** [August 10, 2021, 9:52am UTC](https://forum.universal-robots.com/t/how-to-get-image-string-through-tool-communication-rs485/15876/2 "2021-08-10T09:52:04Z")

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Hi Wrenn,

Welcome to the UR community!

You setup is not really clear to me. The adapter is a USB device from you description is also sound like your camera is a USB device? If that is the case your camera will only work if you connect it to a USB host.

If that is not the case, please share some details on your setup.

Best regards  
Ebbe