# Communication with Laser Marking Devices **URL:** \ **Category:** Robot Communication\ **Created:** [December 16, 2021, 12:54pm UTC](https://forum.universal-robots.com/t/communication-with-laser-marking-devices/18210 "2021-12-16T12:54:48Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![mouzzamhusain](https://avatars.discourse-cdn.com/v4/letter/m/4491bb/32.png) [@mouzzamhusain](https://forum.universal-robots.com/u/mouzzamhusain)\ **Post date:** [December 16, 2021, 12:54pm UTC](https://forum.universal-robots.com/t/communication-with-laser-marking-devices/18210/1 "2021-12-16T12:54:48Z")
Hi, I tried to connect UR3e control box to Laser Marking controlling unit via Ethernet option but it doesn’t seem to work. I’m trying to implement a Master-Slave functionality. Master being UR3e. However, wasn’t able to achieve communication between those two. Any suggestion please on how to achieve this? Thanks. ---
**Author:** ![terryc](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.universal-robots.com/terryc/32/3006_2.png) [@terryc](https://forum.universal-robots.com/u/terryc)\ **Post date:** [December 16, 2021, 10:32pm UTC](https://forum.universal-robots.com/t/communication-with-laser-marking-devices/18210/2 "2021-12-16T22:32:49Z")
Well I guess the most obvious question is are they both on the same subnet, but you’ve probably checked that. I’d ssh into the robot and try pinging the other device. What communications protocol does the Laser Marking device use? Feel free to share its manual if you have it. ---
**Author:** ![mouzzamhusain](https://avatars.discourse-cdn.com/v4/letter/m/4491bb/32.png) [@mouzzamhusain](https://forum.universal-robots.com/u/mouzzamhusain)\ **Post date:** [December 17, 2021, 9:42am UTC](https://forum.universal-robots.com/t/communication-with-laser-marking-devices/18210/3 "2021-12-17T09:42:59Z")
The Keyence (Laser Marker) uses Ethernet and RS 232C for communication. I have attached the manual. Thank you for responding. [Ethernet-IP\_UM\_491GB\_252009\_E\_1018-6 (002).pdf](https://forum.universal-robots.com/uploads/short-url/5W3K0SUJao7uqUBCBaHH5pzzV80.pdf) (1.5 MB) ---
**Author:** ![terryc](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.universal-robots.com/terryc/32/3006_2.png) [@terryc](https://forum.universal-robots.com/u/terryc)\ **Post date:** [December 17, 2021, 5:05pm UTC](https://forum.universal-robots.com/t/communication-with-laser-marking-devices/18210/4 "2021-12-17T17:05:17Z")
Others can correct me if I’m wrong, but I don’t believe the robot can act as an Ethernet/IP scanner, just adapter. Here is a thread where they talk about setting up an RS-232 method with the robot including link to video from ANE: > [@RS-232 to Ethernet or RS-232 to USB Serial communication](https://forum.universal-robots.com/t/rs-232-to-ethernet-or-rs-232-to-usb-serial-communication/9815): > > Hello, I think UR CBseries robots can read serials using an RS-232 converter. Is this possible? Also, should I use the script function of the UR robot to use this signal? Thanks ---
**Author:** ![krmi](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.universal-robots.com/krmi/32/1945_2.png) [@krmi](https://forum.universal-robots.com/u/krmi)\ **Post date:** [December 21, 2021, 7:55pm UTC](https://forum.universal-robots.com/t/communication-with-laser-marking-devices/18210/5 "2021-12-21T19:55:04Z")
This is correct; the robot can only be an Adapter for Ethernet/IP and Profinet. ---
**Author:** ![anon51059468](https://avatars.discourse-cdn.com/v4/letter/a/f08c70/32.png) [@anon51059468](https://forum.universal-robots.com/u/anon51059468)\ **Post date:** [July 1, 2022, 7:02am UTC](https://forum.universal-robots.com/t/communication-with-laser-marking-devices/18210/6 "2022-07-01T07:02:44Z")
Well I guess the most obvious question is [glass laser engraving](https://www.laserchina.com/engraver/uv-marking-machine/) rather than others. ---
**Author:** ![m.hammerton](https://avatars.discourse-cdn.com/v4/letter/m/b2d939/32.png) [@m.hammerton](https://forum.universal-robots.com/u/m.hammerton)\ **Post date:** [November 11, 2022, 7:44am UTC](https://forum.universal-robots.com/t/communication-with-laser-marking-devices/18210/7 "2022-11-11T07:44:00Z")
For Ethernet IP connection you will need a separate PLC with Ethernet IP Scanner (Master) this will need to be Master to both the Universal Robot and the Keyence laser marker. You only really need it to pass signals through from one to the other. Its a shame UR haven’t added the Ethernet IP Scanner option it would be so Handy.