# \#bugs **URL:** https://forum.universal-robots.com/tag/bugs/5.md [Latest](https://forum.universal-robots.com/latest.md) · [Categories](https://forum.universal-robots.com/categories.md) · [Tags](https://forum.universal-robots.com/tags.md) --- ## [IO output script configuration issue](https://forum.universal-robots.com/t/io-output-script-configuration-issue/4482)
**Author:** [@j-p.royer](https://forum.universal-robots.com/u/j-p.royer)\ **Replies:** 8\ **Last updated:** [April 16, 2026, 1:04pm UTC](https://forum.universal-robots.com/t/io-output-script-configuration-issue/4482 "2026-04-16T13:04:01Z")
I have a program using script function “set\_runstate\_standard\_digital\_output\_to\_value(outputId, state)” in the function “generateScript()” from a program contribution node. When I set it to “Low when not running” in thi… --- ## [Possible bug - 5.4.0 Palletizing](https://forum.universal-robots.com/t/possible-bug-5-4-0-palletizing/4704)
**Author:** [@matthew](https://forum.universal-robots.com/u/matthew)\ **Replies:** 8\ **Last updated:** [May 24, 2024, 6:57pm UTC](https://forum.universal-robots.com/t/possible-bug-5-4-0-palletizing/4704 "2024-05-24T18:57:03Z")
Software version 5.4.0 UR10-e Greetings from a first-time user of this forum! I’m chasing down a bug in the Palletizing template, and I wonder if anyone else has any insight on the issue. Here is what I’m observing: … --- ## [Linux - Install.sh fails with Java version 11.0.0](https://forum.universal-robots.com/t/linux-install-sh-fails-with-java-version-11-0-0/8649)
**Author:** [@jeff](https://forum.universal-robots.com/u/jeff)\ **Replies:** 3\ **Last updated:** [November 10, 2022, 3:50pm UTC](https://forum.universal-robots.com/t/linux-install-sh-fails-with-java-version-11-0-0/8649 "2022-11-10T15:50:07Z")
This is with the latest version of the URSim (5.9). The install.sh script checks for java versions later than 1.6. Unfortunately, it does a string compare and concludes than “11.0.8” is less that “1.6” and so quits with… --- ## [Modbus issues after the latest update 3.11.0](https://forum.universal-robots.com/t/modbus-issues-after-the-latest-update-3-11-0/5324)
**Author:** [@ronny.buch](https://forum.universal-robots.com/u/ronny.buch)\ **Replies:** 5\ **Last updated:** [June 16, 2022, 3:02pm UTC](https://forum.universal-robots.com/t/modbus-issues-after-the-latest-update-3-11-0/5324 "2022-06-16T15:02:40Z")
Software version: 3.11.0 Robot generation: CB31UR5 Steps to reproduce: First step: Load program with used Modbus I/Os Second step: start the program Expected behavior: just start the program Actual behavior: multip… --- ## [Calling Pose from URCap generated Waypoint misses TCP Offset](https://forum.universal-robots.com/t/calling-pose-from-urcap-generated-waypoint-misses-tcp-offset/2275)
**Author:** [@m.birkholz](https://forum.universal-robots.com/u/m.birkholz)\ **Replies:** 16\ **Last updated:** [March 25, 2019, 11:57am UTC](https://forum.universal-robots.com/t/calling-pose-from-urcap-generated-waypoint-misses-tcp-offset/2275 "2019-03-25T11:57:03Z")
Hi, when i create a Waypoint with the URCap Api it adds the Waypoint under a MoveNode and its Configuration is shown like this: when i click “Set Waypoint” all seems normal and the below Menu is openend: Note th… --- ## [Stopj not working in force\_mode while servoing](https://forum.universal-robots.com/t/stopj-not-working-in-force-mode-while-servoing/6371)
**Author:** [@anpl](https://forum.universal-robots.com/u/anpl)\ **Replies:** 1\ **Last updated:** [August 18, 2021, 12:30pm UTC](https://forum.universal-robots.com/t/stopj-not-working-in-force-mode-while-servoing/6371 "2021-08-18T12:30:50Z")
Software version: 5.6 Robot generation: e-Series Steps to reproduce: Run a script program on the controller, that enters force mode and performs servoing in a thread. thread servo\_thread(): while (True): … --- ## [C4A1 error when jogging manually on UR10 CB3.0 above 3.11](https://forum.universal-robots.com/t/c4a1-error-when-jogging-manually-on-ur10-cb3-0-above-3-11/9528)
**Author:** [@hi11](https://forum.universal-robots.com/u/hi11)\ **Replies:** 15\ **Last updated:** [August 10, 2021, 11:31am UTC](https://forum.universal-robots.com/t/c4a1-error-when-jogging-manually-on-ur10-cb3-0-above-3-11/9528 "2021-08-10T11:31:54Z")
Summary Since upgrading both our UR10 CB3.0 to 3.12 and up till 3.14 we have had constant C4A1 errors while jogging the bots manually. They run flawlessly for days when running programs, but when stopped and moving manua… --- ## [About the Report a Bug category](https://forum.universal-robots.com/t/about-the-report-a-bug-category/13415)
**Author:** [@RobH](https://forum.universal-robots.com/u/RobH)\ **Replies:** 3\ **Last updated:** [August 9, 2021, 9:18pm UTC](https://forum.universal-robots.com/t/about-the-report-a-bug-category/13415 "2021-08-09T21:18:49Z")
If you think you have found a bug, please submit it here. Best Format to speed Community Response: Software version : Robot generation : Steps to reproduce : Expected behavior : Actual behavior : Screenshots are h… --- ## [Safeguard not resuming program](https://forum.universal-robots.com/t/safeguard-not-resuming-program/3045)
**Author:** [@anon83012695](https://forum.universal-robots.com/u/anon83012695)\ **Replies:** 7\ **Last updated:** [July 28, 2021, 4:16pm UTC](https://forum.universal-robots.com/t/safeguard-not-resuming-program/3045 "2021-07-28T16:16:30Z")
Hi, I have a similar problem described in this thread: Safeguard Stop and RT Interface Programs What I want is that the UR-program should resume program execution after the safeguard stop is deactivated. Currently the… --- ## [IF node inserts Eles/ElseIf nodes in a locked child sequence](https://forum.universal-robots.com/t/if-node-inserts-eles-elseif-nodes-in-a-locked-child-sequence/8436)
**Author:** [@marius.gheorghe](https://forum.universal-robots.com/u/marius.gheorghe)\ **Replies:** 1\ **Last updated:** [May 27, 2021, 8:51am UTC](https://forum.universal-robots.com/t/if-node-inserts-eles-elseif-nodes-in-a-locked-child-sequence/8436 "2021-05-27T08:51:27Z")
Versions Affected Robot Software Version(s): Tested on several versions (5.8, 3.13) and all had the same results Impact URCap User Expecrience Issue details When creating a URCap with a locked child sequence (i.e. se… --- ## ['Start Program' input not playing program after Dashboard pause](https://forum.universal-robots.com/t/start-program-input-not-playing-program-after-dashboard-pause/9851)
**Author:** [@anon43954375](https://forum.universal-robots.com/u/anon43954375)\ **Replies:** 4\ **Last updated:** [May 7, 2021, 11:38pm UTC](https://forum.universal-robots.com/t/start-program-input-not-playing-program-after-dashboard-pause/9851 "2021-05-07T23:38:05Z")
Hello, Running a UR10 e-series, fully up to date software. I am sending a signal via socket communication in the robot program to pause the program. The robot is in remote control mode, and I have a ‘start’ push button… --- ## [Bug: Cursor doesn't follow program flow if "expression continuously" is checked](https://forum.universal-robots.com/t/bug-cursor-doesnt-follow-program-flow-if-expression-continuously-is-checked/7553)
**Author:** [@fujikit](https://forum.universal-robots.com/u/fujikit)\ **Replies:** 5\ **Last updated:** [April 26, 2021, 9:12am UTC](https://forum.universal-robots.com/t/bug-cursor-doesnt-follow-program-flow-if-expression-continuously-is-checked/7553 "2021-04-26T09:12:51Z")
Cursor doesn’t follow program flow if “expression continuously” is checked on “loop node” and “if node”. I can’t debug it on long robot program, so what can I do? --- ## [Standard Gateway Adress is set to Robot IP after restart](https://forum.universal-robots.com/t/standard-gateway-adress-is-set-to-robot-ip-after-restart/5064)
**Author:** [@m.birkholz](https://forum.universal-robots.com/u/m.birkholz)\ **Replies:** 8\ **Last updated:** [March 10, 2021, 11:36am UTC](https://forum.universal-robots.com/t/standard-gateway-adress-is-set-to-robot-ip-after-restart/5064 "2021-03-10T11:36:12Z")
Software version: …5.4.3 Robot generation: … UR10e #20195000516 Steps to reproduce: First step Setup the STATIC IP Adress: Robot 192.168.100.5 Mask 255.255.255.0 Gateway 192.168.100.1 Second step Restart Rob… --- ## [Robot controller unstable / wiggling](https://forum.universal-robots.com/t/robot-controller-unstable-wiggling/7344)
**Author:** [@super](https://forum.universal-robots.com/u/super)\ **Replies:** 1\ **Last updated:** [January 18, 2021, 7:07pm UTC](https://forum.universal-robots.com/t/robot-controller-unstable-wiggling/7344 "2021-01-18T19:07:08Z")
Summary Your issue may already be reported! Please search on the Bugs category before creating one. Introduction to the issue There are “islands of instability”, where the robot jumps back and forward between two almo… --- ## [API function "isCurrent" not working properly](https://forum.universal-robots.com/t/api-function-iscurrent-not-working-properly/4398)
**Author:** [@anon65613222](https://forum.universal-robots.com/u/anon65613222)\ **Replies:** 0\ **Last updated:** [May 28, 2019, 1:16pm UTC](https://forum.universal-robots.com/t/api-function-iscurrent-not-working-properly/4398 "2019-05-28T13:16:14Z")
Software version: … 3.9.1.64192 Robot generation: … Simulator and UR10 Steps to reproduce: Using the IO Handler and the ScriptCommander from one of the UR examples. Snips of the code: ScriptCommand setVoltageAndRe… --- ## [Program tree view jumps to "executed" step](https://forum.universal-robots.com/t/program-tree-view-jumps-to-executed-step/4509)
**Author:** [@anon88349317](https://forum.universal-robots.com/u/anon88349317)\ **Replies:** 0\ **Last updated:** [June 13, 2019, 7:57am UTC](https://forum.universal-robots.com/t/program-tree-view-jumps-to-executed-step/4509 "2019-06-13T07:57:46Z")
Software version: 3.10.0.76181 Robot generation: CB3.1 Hi. Just a little bug report: In programming mode in Polyscope it has become quite annoying how the program three jumps to the “executed” step, the blue line, wh… --- ## [Bug: Save dialog appears in "Run program"-screen](https://forum.universal-robots.com/t/bug-save-dialog-appears-in-run-program-screen/4561)
**Author:** [@anon88349317](https://forum.universal-robots.com/u/anon88349317)\ **Replies:** 0\ **Last updated:** [June 19, 2019, 3:11pm UTC](https://forum.universal-robots.com/t/bug-save-dialog-appears-in-run-program-screen/4561 "2019-06-19T15:11:34Z")
Software version : 3.9 / 3.10.0.76181 Robot generation : CB3.1 Steps to reproduce: 1: Make a program with some installation variables. Make the program as default program on startup. 2: Reboot robot. Make sure the … --- ## [Unwanted "Loop" variables can't be deleted and don't seem to do anything](https://forum.universal-robots.com/t/unwanted-loop-variables-cant-be-deleted-and-dont-seem-to-do-anything/5129)
**Author:** [@anna](https://forum.universal-robots.com/u/anna)\ **Replies:** 0\ **Last updated:** [September 16, 2019, 10:07pm UTC](https://forum.universal-robots.com/t/unwanted-loop-variables-cant-be-deleted-and-dont-seem-to-do-anything/5129 "2019-09-16T22:07:14Z")
Software version: 3.8.0.61336 Robot generation: UR5 with CB3 When I add or change a variable assignment in my polyscope program, the drop-down list of variables contains many, many iterations of “Loop\_x”, where “x” is … --- ## [Transition from linear to joint - Jerk](https://forum.universal-robots.com/t/transition-from-linear-to-joint-jerk/5879)
**Author:** [@damian.cieslak](https://forum.universal-robots.com/u/damian.cieslak)\ **Replies:** 0\ **Last updated:** [December 18, 2019, 7:29am UTC](https://forum.universal-robots.com/t/transition-from-linear-to-joint-jerk/5879 "2019-12-18T07:29:10Z")
Hi, I noticed some strange behavior of UR 10 CB3 3.12 (and previous). When I try to do smooth transition between linear and joint move (in both directions) . At the moment of transition sometimes occurs jerks and prot… --- ## [Link waypoint in a moveL using a user features](https://forum.universal-robots.com/t/link-waypoint-in-a-movel-using-a-user-features/6082)
**Author:** [@anon56349523](https://forum.universal-robots.com/u/anon56349523)\ **Replies:** 0\ **Last updated:** [January 15, 2020, 8:47am UTC](https://forum.universal-robots.com/t/link-waypoint-in-a-movel-using-a-user-features/6082 "2020-01-15T08:47:30Z")
Software version: 3.12 Robot generation: UR10 CB3.1 Steps to reproduce: Create a feature Create a moveL with 2 waypoint using your feature Try to link 1 waypoint to the other Expected behavior: Same waypoint Actua… --- ## [Wrong virtual machine name in VMware Workstation Player](https://forum.universal-robots.com/t/wrong-virtual-machine-name-in-vmware-workstation-player/6102)
**Author:** [@anon3164729](https://forum.universal-robots.com/u/anon3164729)\ **Replies:** 0\ **Last updated:** [January 20, 2020, 7:31am UTC](https://forum.universal-robots.com/t/wrong-virtual-machine-name-in-vmware-workstation-player/6102 "2020-01-20T07:31:41Z")
Software version: URCaps Starter Package 1.8.0 and 1.9.0 (probably older versions also) Steps to reproduce: Open VMware Workstation Player Open a Virtual Machine Select “URCaps Starter Package.vmx” Expected behavior:… --- ## [Problem with assigment operator when close it via Dashboard](https://forum.universal-robots.com/t/problem-with-assigment-operator-when-close-it-via-dashboard/6182)
**Author:** [@anon89006500](https://forum.universal-robots.com/u/anon89006500)\ **Replies:** 0\ **Last updated:** [January 28, 2020, 11:08am UTC](https://forum.universal-robots.com/t/problem-with-assigment-operator-when-close-it-via-dashboard/6182 "2020-01-28T11:08:31Z")
Software version: 5.5.1 Robot generation: e-series My program consist on: 1 - In an event i have all this: Loop time\<5 (check always) local varible = request\_string­­\_from\_primary\_client(s) time reset end loop so… --- ## [Global variable is cleared after reboot](https://forum.universal-robots.com/t/global-variable-is-cleared-after-reboot/6560)
**Author:** [@fujikit](https://forum.universal-robots.com/u/fujikit)\ **Replies:** 0\ **Last updated:** [March 4, 2020, 7:56am UTC](https://forum.universal-robots.com/t/global-variable-is-cleared-after-reboot/6560 "2020-03-04T07:56:40Z")
Software version: … SW3.12 Robot generation: … UR3 Steps to reproduce: First step Input “GO-HOME” to variable “global\_var1” Second step… System reboot Expected behavior: Value of global string variable is keep … --- ## [Is\_within\_safety\_limits not working in URSim](https://forum.universal-robots.com/t/is-within-safety-limits-not-working-in-ursim/7404)
**Author:** [@anon3164729](https://forum.universal-robots.com/u/anon3164729)\ **Replies:** 0\ **Last updated:** [May 22, 2020, 2:22pm UTC](https://forum.universal-robots.com/t/is-within-safety-limits-not-working-in-ursim/7404 "2020-05-22T14:22:41Z")
Summary is\_within\_safety\_limits does not check safety limits in URSim Versions Affected Robot Software Version(s): 5.8.0.10253 Impact Impossible to check if a pose is within safety limits Steps to Reproduce Set some … --- ## [URtool installation breaks cmake boost discovery](https://forum.universal-robots.com/t/urtool-installation-breaks-cmake-boost-discovery/7685)
**Author:** [@ipatsiaouras](https://forum.universal-robots.com/u/ipatsiaouras)\ **Replies:** 0\ **Last updated:** [June 15, 2020, 9:14am UTC](https://forum.universal-robots.com/t/urtool-installation-breaks-cmake-boost-discovery/7685 "2020-06-15T09:14:09Z")
Summary Recently I installed the SDK on linux ubuntu machine (not using the VM from starter package). Everything was fine and I could use it as expected. Unfortunately the installation of the SDK broke the discovery of … --- ## [Language is set to English after Restart](https://forum.universal-robots.com/t/language-is-set-to-english-after-restart/7839)
**Author:** [@m.birkholz](https://forum.universal-robots.com/u/m.birkholz)\ **Replies:** 0\ **Last updated:** [June 29, 2020, 5:48am UTC](https://forum.universal-robots.com/t/language-is-set-to-english-after-restart/7839 "2020-06-29T05:48:19Z")
Hi, i noticed that in rare situations, the language of the robot is set to english after restart. This applies to all robot types and polyscope versions. It mostly happens after a safety failure/hard stop and a system c… --- ## [UR-image SW5.8.2 - Bug in "Settings" -\> "URCap" / "Back-up" / "Register Robot"](https://forum.universal-robots.com/t/ur-image-sw5-8-2-bug-in-settings-urcap-back-up-register-robot/8370)
**Author:** [@anon47890902](https://forum.universal-robots.com/u/anon47890902)\ **Replies:** 0\ **Last updated:** [August 5, 2020, 10:09am UTC](https://forum.universal-robots.com/t/ur-image-sw5-8-2-bug-in-settings-urcap-back-up-register-robot/8370 "2020-08-05T10:09:12Z")
Summary Ather fresh install of Polyscope-image SW 5.8.2 the funcionalities under “Settings” do not work properly and are replicating themselfes. Introduction to the issue Versions Affected Robot Software Version(s): … --- ## [Exception Caught in Thread Timer-20](https://forum.universal-robots.com/t/exception-caught-in-thread-timer-20/11342)
**Author:** [@anon29970367](https://forum.universal-robots.com/u/anon29970367)\ **Replies:** 0\ **Last updated:** [January 9, 2021, 12:47pm UTC](https://forum.universal-robots.com/t/exception-caught-in-thread-timer-20/11342 "2021-01-09T12:47:09Z")
Summary Introduction to the issue Robot is already installed at customer, but not yet used in production, so what exactly happened before is hard to estimate. After starting a cycle (externally from PLC) one of the robo… --- ## [UR Time/Date resetting itself to incorrect values](https://forum.universal-robots.com/t/ur-time-date-resetting-itself-to-incorrect-values/11021)
**Author:** [@anna](https://forum.universal-robots.com/u/anna)\ **Replies:** 2\ **Last updated:** [December 28, 2020, 10:41pm UTC](https://forum.universal-robots.com/t/ur-time-date-resetting-itself-to-incorrect-values/11021 "2020-12-28T22:41:34Z")
Occasionally, the time and date on my UR5 will reset itself to midnight on Jan 1, 2012. I’ve had to reset it to the current date and time at least 3 times in the last couple months. It is a pain, because when I correct… --- ## ["No Controller" error on real robot](https://forum.universal-robots.com/t/no-controller-error-on-real-robot/3127)
**Author:** [@anon56349523](https://forum.universal-robots.com/u/anon56349523)\ **Replies:** 55\ **Last updated:** [December 2, 2020, 3:26pm UTC](https://forum.universal-robots.com/t/no-controller-error-on-real-robot/3127 "2020-12-02T15:26:47Z")
Hi, I have an issue with our unviersal Robot, some times, the robot stop, and an error message show up “No controller”. It happens with an UR 5 e-series, UR 5 CB series and also with one UR 10. The robots are all up t… [Next page](https://forum.universal-robots.com/tag/bugs/5.md?match_all_tags=true&page=1&tags%5B%5D=bugs)