# UR3e profinet communication with CPU 1214C issues **URL:** \ **Category:** Robot Communication\ **Created:** [May 14, 2021, 7:37am UTC](https://forum.universal-robots.com/t/ur3e-profinet-communication-with-cpu-1214c-issues/14329 "2021-05-14T07:37:35Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![anon1673032](https://avatars.discourse-cdn.com/v4/letter/a/da6949/32.png) [@anon1673032](https://forum.universal-robots.com/u/anon1673032)\ **Post date:** [May 14, 2021, 7:37am UTC](https://forum.universal-robots.com/t/ur3e-profinet-communication-with-cpu-1214c-issues/14329/1 "2021-05-14T07:37:35Z")
Hi, I am trying to create a profinet communication between SIEMENS SIMATIC S7-1200 and UR3e. But Head module and its Modules are not reachable in TIA Portal project. UR3e has a profile name and IP address. ![1](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/d/ded2f236ecbb5c17a156d60e90b6bebaed0ecf04.png) ![2](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/8/8b9861ec0fbceae2b9c3fe42a8665e7e2e7acedc.png) ![3](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/1/14b41f679fb91f857698e2e7635f2e576980cd57.png) ![4](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/5/51b406f21b2f2cfe55d8cc222b3a20afc42cd906.png) ![5](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/8/825e0f08df87d540fb0cb01642a10c8dee7a1a52.png) ![6](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/4/4e66c5edd76ea042e37b4a307fef6a782d777c06.jpeg) ![7](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/c/ce49a4aa641305033b3eb855db830c49ef8881ef.jpeg) ![8](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/5/57bc1bd3cb6cbff2ace65620371572426af56fb8.jpeg) What should i check? Best regads, Kiaan ---
**Author:** ![anon63938643](https://avatars.discourse-cdn.com/v4/letter/a/da6949/32.png) [@anon63938643](https://forum.universal-robots.com/u/anon63938643)\ **Post date:** [May 14, 2021, 12:07pm UTC](https://forum.universal-robots.com/t/ur3e-profinet-communication-with-cpu-1214c-issues/14329/2 "2021-05-14T12:07:40Z")
I noticed that you are using a router, try to use a snet mask like: 255.255.0.0 for both. Also keep your I/O assignments in order (for example 0…11, 22…23, 34…36, etc.) - i am always start to assign the I/O for each robot with 100, or if is the second with: 200, etc. because in this way you leave enough space for PLC I/O …don’t know if it’s help, just as organizing in I/O . And last thing, check firewalls! I had issues also with blocking communications using Profinet through TCP ---
**Author:** ![mbush](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.universal-robots.com/mbush/32/76_2.png) [@mbush](https://forum.universal-robots.com/u/mbush)\ **Post date:** [May 16, 2021, 4:04pm UTC](https://forum.universal-robots.com/t/ur3e-profinet-communication-with-cpu-1214c-issues/14329/3 "2021-05-16T16:04:33Z")
Also, make sure you are hardwired to the network where the UR is attached. WiFi/VPN does not allow the MAC address search that Profinet uses to find devices on the network. Once you have assigned the device in TIA you can go back to wireless or VPN. ---
**Author:** ![smosmar311](https://avatars.discourse-cdn.com/v4/letter/s/3d9bf3/32.png) [@smosmar311](https://forum.universal-robots.com/u/smosmar311)\ **Post date:** [August 24, 2021, 3:03am UTC](https://forum.universal-robots.com/t/ur3e-profinet-communication-with-cpu-1214c-issues/14329/4 "2021-08-24T03:03:55Z")
hi Favaki. I would like to know if you already solved this problem and if so, would you share the solution with me. ---
**Author:** ![anon8427798](https://avatars.discourse-cdn.com/v4/letter/a/d78d45/32.png) [@anon8427798](https://forum.universal-robots.com/u/anon8427798)\ **Post date:** [October 13, 2022, 10:54am UTC](https://forum.universal-robots.com/t/ur3e-profinet-communication-with-cpu-1214c-issues/14329/5 "2022-10-13T10:54:30Z")
Hey! Has this problem been solved? If so, what is the solution? I have the same issues and would appreciate some help. Thank you.