# Help with SRCI and Siemens TiaPortal with UR3e **URL:** \ **Category:** Technical Questions\ **Created:** [March 4, 2026, 11:27am UTC](https://forum.universal-robots.com/t/help-with-srci-and-siemens-tiaportal-with-ur3e/42365 "2026-03-04T11:27:28Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![xhacker](https://avatars.discourse-cdn.com/v4/letter/x/9dc877/32.png) [@xhacker](https://forum.universal-robots.com/u/xhacker)\ **Post date:** [March 4, 2026, 11:27am UTC](https://forum.universal-robots.com/t/help-with-srci-and-siemens-tiaportal-with-ur3e/42365/1 "2026-03-04T11:27:28Z")
Hi everyone, Im student of University, I’m trying to integrate as a first one in our university, so I dont have support from anybody, and its a lot….so, I’m trying to integrate a Universal Robots UR3e (e-Series) with a Siemens S7-1500 PLC via PROFINET using SRCI (UR SRCI URCap + Siemens Robot Library / Robot Integrator workflow). I’m stuck at the point where TIA Portal shows the robot/device as “not reachable” ![Snímka obrazovky 2026-03-04 120148](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/3/3e0c7201825c362c5627d71fc784569d7195f185.png) ## Setup - Robot: UR3e (e-Series) - PLC: Siemens S7-1500 1516-3 PN/DP - Engineering: TIA Portal V20 - In TIA I imported: ## Wiring / Topology - PLC PROFINET interface configured in TIA. - Robot is connected via Ethernet cable to an additional port on the PLC (direct connection; no separate switch at the moment). ## What’s not working Even following the SRCI guides, the UR PN device shows “not reachable” in TIA Portal. So TIA can’t see it online / can’t establish the expected PROFINET device connection. > **[How-to Standard Robot Command Interface](https://www.universal-robots.com/articles/ur/interface-communication/standard-robot-command-interface-srci-how-to-guide/)** ## What I’ve already done / checked - PROFINET enabled on robot - Remote mode enabled + interpreter enable program running - Imported GSDML + added UR device to the PN network in TIA - Imported SRL + URDataStruct - IP addressing, subnet masks, PROFINET device name, etc. ## Questions / What I need help with 1. What are the most common causes of “not reachable” for UR as a PROFINET IO device? And please it there a solution to solve this? 2. Does anyone have a reliable step-by-step checklist (from a clean start) for UR e-Series + S7-1500 + SRL/SRI + SRCI? ## Attachments I can provide - Screenshot from TIA (“not reachable”) - Exact GSDML version/file - Network configuration (IP/masks, PN device name, topology) Any pointers on what to verify first (and the usual “gotchas” with UR + PROFINET + SRCI) would be greatly appreciated. Thanks! Samuel ---
**Author:** ![efn](https://avatars.discourse-cdn.com/v4/letter/e/35a633/32.png) [@efn](https://forum.universal-robots.com/u/efn)\ **Post date:** [March 5, 2026, 6:10am UTC](https://forum.universal-robots.com/t/help-with-srci-and-siemens-tiaportal-with-ur3e/42365/2 "2026-03-05T06:10:54Z")
I’ve encountered the same a couple of times, where the network switch was the issue. Give it a try with a direct connection between the robot and PLC (check PROFINET status on UR - restart both first) as a quick test. ---
**Author:** ![xhacker](https://avatars.discourse-cdn.com/v4/letter/x/9dc877/32.png) [@xhacker](https://forum.universal-robots.com/u/xhacker)\ **Post date:** [March 5, 2026, 10:18am UTC](https://forum.universal-robots.com/t/help-with-srci-and-siemens-tiaportal-with-ur3e/42365/3 "2026-03-05T10:18:06Z")
Hello sir, I have also tried a direct connection, but the issue persists. Profinet is active on the robot; when I use the ‘Flash LED’ function during name assignment in TIA Portal, the robot panel displays the corresponding messages, confirming communication. Furthermore, when I established a Profinet connection using a standard head module, it connected without any problems and I could see real-time data from the robot in the tag table. Im sending u also screenshots, what I mean, that it works..but that block for SRCI dont..And I really needs to communicate via that module (because of Siemens Robot Library-Integrator-SRCI)… ![Snímka obrazovky 2026-03-05 111253](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/a/a1fdbdf9b9ac9bf9ce6ebb738146e6a335036182.png) ![Snímka obrazovky 2026-03-05 111248](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/f/fad324aa3f2fb4e02a8423a92c359319667fbd12.png) ---
**Author:** ![cags](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.universal-robots.com/cags/32/6304_2.png) [@cags](https://forum.universal-robots.com/u/cags)\ **Post date:** [March 10, 2026, 7:46am UTC](https://forum.universal-robots.com/t/help-with-srci-and-siemens-tiaportal-with-ur3e/42365/4 "2026-03-10T07:46:55Z")
A bug with the PROFINET communication was reported in Polyscope 5.24. It is a weird bug that troubles the communication with the PLC. I would say it could affect your case too. Please upgrade your robot to 5.25, or downgrade to 5.21.3 if not possible ---
**Author:** ![xhacker](https://avatars.discourse-cdn.com/v4/letter/x/9dc877/32.png) [@xhacker](https://forum.universal-robots.com/u/xhacker)\ **Post date:** [March 18, 2026, 12:36pm UTC](https://forum.universal-robots.com/t/help-with-srci-and-siemens-tiaportal-with-ur3e/42365/5 "2026-03-18T12:36:46Z")
Thank you for your help. Your advice regarding updating Polyscope to the new version was very helpful. I am now able to successfully connect the robot to the PLC via SRCI. I really appreciate your support. ---
**Author:** ![xhacker](https://avatars.discourse-cdn.com/v4/letter/x/9dc877/32.png) [@xhacker](https://forum.universal-robots.com/u/xhacker)\ **Post date:** [March 18, 2026, 12:49pm UTC](https://forum.universal-robots.com/t/help-with-srci-and-siemens-tiaportal-with-ur3e/42365/6 "2026-03-18T12:49:14Z")
If I may ask for your another advice, I am trying to identify which bits or data types in the PLC correspond to the digital outputs controlling the robot. My goal is to link a FESTO EHPS gripper with the Siemens Robot Integrator, where there are buttons for gripper open and close. At the same time, I am also using an analog input in robot controller, from a sensor that provides feedback on whether the gripper is open or closed. Using standard PROFINET monitoring, I was able to find the corresponding input and output addresses, like %IBxxxx and %IDxxxx. When %IB2034 have value 2 gripper is closing, and analog input is showing like 9.9V…when %IB2034 have value 1 gripper is opening, and analog input is showing like 5.0V ![image](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/b/bcea89686aa9088f1e0babed125212ea026da401.png) However, its only read only and I am not able to write to these signals using SRI, SRL via SRCI. Could you please advise on how to correctly map or access these signals so that I can control the gripper and read its state within the SRI/SRL framework? Thank you in advance for your help. Best regards,