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Post by ph0010421 on Deploy Codesys Control SL to a 'secure' device
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Hello I'm trying to get Codesys onto a 'Secure' edge device (Linux) The device doesn't support 'sudo' so the connection doesn't complete properly. Is this the same as not allowing root access? Anyway, the screen shot shows where I am. What options do I have?
Last updated: 2026-05-01
Post by pra83 on CODESYS SoftRedundancy — Both PLCs stay standalone after network interruption — Auto recovery not working
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Hello, We are facing a critical issue with CODESYS SoftRedundancy that we have been unable to resolve despite extensive troubleshooting. HARDWARE: 2× HP EliteDesk 800 G9 SFF Intel Core i7-14700 (20 cores) 16GB RAM, 512GB NVMe SSD Windows 11 IoT Enterprise LTSC 2024 NIC1: Built-in Intel GbE NIC2: Intel I210-T1 PCIe (NIC team) SOFTWARE: CODESYS Control Win V3 - x64 Version 3.5.22.10 CODESYS SoftRedundancy SL Server 1 IP: 172.10.10.101 (PLC1 — Active) Server 2 IP: 172.10.10.102 (PLC2 — Standby) CURRENT CODESYSControl.cfg: [CmpRedundancy] BootupWaitTime=120000 StandbyWaitTime=12100 SynchronousTimeout=12100 [CmpSchedule] ProcessorLoad.Maximum=80 WatchdogTime=12000 WatchdogTimeoutAction=0 CONFIRMED WORKING: PLC1/PLC2 identification configured via IDE Connection IP configured via IDE AutoSync enabled and written via IDE Normal Active/Standby operation working Server 2 auto-promotes when Server 1 completely fails PROBLEM DESCRIPTION: When NIC1 cable is removed from Server 1 — both servers go to standalone mode. When NIC1 cable is reconnected — both servers remain in standalone indefinitely. Neither server auto-recovers to Active/Standby without manual CODESYS service restart. AutoSync fires (!!! Autosync !!! visible in log) but recovery does not complete. Tested with direct cable (no NIC team) — same result. Confirmed not a hardware or NIC teaming issue. KEY LOG MESSAGES: "Timeout: No sync message RMSG_StartCycle (5) from master: Standalone" "Socket on other side closed gracefully 0" "Standby PLC: Open acyclic work socket failed" "Connection broke after 11806ms. Check BootupWaitTime." Autosync(fires but does not complete recovery) PCAP ANALYSIS (Wireshark): CODESYS sync stops completely at T+3s Server 1 sends TCP FIN on ports 1206 and 1208 at T+5s No CODESYS redundancy traffic for remaining 24 seconds Both servers stay standalone indefinitely WHAT WE HAVE TRIED: StandbyWaitTime = 12100ms SynchronousTimeout = 12100ms WatchdogTime = 12000ms (less than StandbyWaitTime) AutoSync enabled NIC2 set as Standby adapter Disabled Windows Network Discovery Direct cable test — rules out NIC hardware QUESTION: Per official CODESYS documentation: "No automatic Reconnect is included in the functional scope of the redundancy components. You can program the triggering of a reconnect." Is RDCY.Synchronize() the correct function to add to our application for automatic recovery after both PLCs go standalone? What is preventing auto-recovery when AutoSync is enabled and PlcIdent is correctly set? Thank you for your support.
Last updated: 2026-05-02
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Post by malie on Issue with library updates
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I just tried with version 3.5.22.1 and librarys updates often aren't recognized, usually not. Same behavior like 3.5.21. To describe my workflow: one IDE is used to test librarys as project and two or more IDEs to edit librarys. With only two open IDEs there is no problem, the problem began with more than two open IDEs.
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Post by yptfindy on #65 coUnitRunner Error: no more free global space
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Hi everyone, I’m running into the same memory issue, but I’m using a newer version of CODESYS where I can’t seem to find the “Library Parameters” section in the Library Manager anymore. From what I’ve read online, it looks like this feature might have been deprecated. Given that, what would be the recommended way now to limit things like the number of test suites? Is there an alternative configuration approach in newer CODESYS versions to reduce memory usage? Thanks in advance for your help!
Last updated: 2026-05-04
Ticket #65: coUnitRunner Error: no more free global space
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Hello together, I have followed the tutorial for a first simple unit test and got the following error while compiling: [INFORMATION] co♻e - a unittest framework for codesys, 1.2.0.0 (www.co5e.org): GVL_coUnit(line 33): co♻e - A unittest framework for CODESYS based on TcUnit. Forked with kind permission by Jakob Sagatowski and contributors. MIT Licensed. [ERROR] co♻e - a unittest framework for codesys, 1.2.0.0 (www.co5e.org): GVL_coUnit(line 4): C0106: No more free global memory available: Variable 'coUnitRunner', 77728400 Bytes (Largest contiguous free memory 109824). Incremental translation or adding variables to the persistent variable lists could generate fragmented memory. Execute the "Reorder list and clean up gaps" command to defragment the list of persistent variables or "Translate, clean up" to reallocate the memory for other data and code. Any ideas on how to resolve this error? Thank you in advance!2026-05-04 15:03:13.500000 Ticket #65: coUnitRunner Error: no more free global space co♻e: unittest framework for CODESYS counit tickets tickets False /lib/counit/tickets/65/ Ticket coUnitRunner Error: no more free global space False 1 2024-02-12 07:32:42.430000 65 coUnitRunner Error: no more free global space open Hello together, I have followed the tutorial for a first simple unit test and got the following error while compiling: [INFORMATION] co♻e - a unittest framework for codesys, 1.2.0.0 (www.co5e.org): GVL_coUnit(line 33): co♻e - A unittest framework for CODESYS based on TcUnit. Forked with kind permission by Jakob Sagatowski and contributors. MIT Licensed. [ERROR] co♻e - a unittest framework for codesys, 1.2.0.0 (www.co5e.org): GVL_coUnit(line 4): C0106: No more free global memory available: Variable 'coUnitRunner', 77728400 Bytes (Largest contiguous free memory 109824). Incremental translation or adding variables to the persistent variable lists could generate fragmented memory. Execute the "Reorder list and clean up gaps" command to defragment the list of persistent variables or "Translate, clean up" to reallocate the memory for other data and code. Any ideas on how to resolve this error? Thank you in advance! False False 0 0 0 None v1.2.0.0 elpanoo1 None
Last updated: 2026-05-04
Post by gseidel on Mismatch between coordinate monitor and actual motion using SMC_GroupJog2, MC_MoveLinearAbsolute (6DOF)
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Hi darwin03, when all joints are 0°, then the 6-axis robot is in a so called singularity. This means that it is in a special position where it cannot move freely in all directions but is restricted by its own construction. For a simple example, imagine a scara robot where the arm is fully stretched. In this position it cannot move freely. You can find a lot of information about robot configurations in the www. As far as CODESYS SoftMotion Robotics is concerned, this page holds the most important links, look for the error SMC_CP_CONFIGS_DIFFER: https://content.helpme-codesys.com/en/CODESYS%20SoftMotion/_sm_robotics_errors.html The most important rules: 1) CP movements (linear moves, circular moves, cartesian jogging) cannot change the configuration during the movement. Both start- and endpoint must be in the same configuration. This excludes also the edge case that one or both of them are in a singularity. 2) PTP movements can move through singularities and cross configurations without problems. 3) SMC_SetKinConfiguration can be used to set the configuration of the axis group. Regards, Georg
Last updated: 2026-05-04
Mismatch between coordinate monitor and actual motion using SMC_GroupJog2, MC_MoveLinearAbsolute (6DOF)
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Mismatch between coordinate monitor and actual motion using SMC_GroupJog2, MC_MoveLinearAbsolute (6DOF)
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draw 1000 nails the easy way
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draw 1000 nails the easy way
Last updated: 2026-05-06
Post by reinier-geers on draw 1000 nails the easy way
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Because codesys dont has a draw command like Circle in Qbasic ( 20 years ago ) i want to draw 1000 nails, and then move them in the screen when they needed. I dont know if codesys can handle this. But is ther an easy way to draw 1000 nails with every single one has a pointer for movement, color and invisable. Of is there a linux command to draw a circle so i can do it with a process command
Last updated: 2026-05-06
Post by reinier-geers on Network variable stops sending
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What version. 20.5 ? ive got also problems wiyth that version. Online change, it hangs itself after one hour. Then one project can problems. Ive change display with 21.0 . At home i turned on the 20.5 display. After 1 hour i goes to stop.
Last updated: 2026-05-06