Post by felipemsgarcia on Edge Gateway online, but PLC is not online ^{CODESYS Forge talk (Post)}
Hello Edwin, I sent the info through CODESYS store my question, as I was afraid that I could be exposing sensitive information here in the forum. Thank you very much!
Last updated: 2024-01-10

Post by jinlee on Multiple WebVisu ^{CODESYS Forge talk (Post)}
Hi there, I am having a similar problem like you. I have 3 screens connected to one PLC. I have set 3 different URLs for them. But 3 of them are still dependent to each other. How can I make them independently ? Kind regards, Jin.
Last updated: 2024-01-25

Post by yannickasselin on Connect to remote PLC via local pc and teamviewer ^{CODESYS Forge talk (Post)}
Yes it is possible. I did it a lot of times using TeamViewer VPN. Unfortunately, TeamViewer VPN only works on Windows. If the remote PLC is a Codesys runtime running on Windows, you should be able to login directly using TeamViewer VPN if it is installed on the PC/PLC. If it is not Windows based, you can still do it but you need to have a Windows based PC acting as a gateway in the middle. In this case you need to enable IP Forwarding on the Windows remote PC (the gateway) and you need to setup the gateway IP address on the PLC to be the address of the Windows PC. Then you need to add a route on your local PC to point to the gateway PC for Codesys communication. I know it may not be detailed enough but I did not want to make a whole tutorial on how to do it. Bottom line, it is possible. I do it all the time.
Last updated: 2024-02-02

Post by irshad on Modbus TCP/IP slave communication errow ^{CODESYS Forge talk (Post)}
While reading the value of a slave device, it shows error frequently and i need to restart my PLC for getting the communication back. In codesys it shows the slave in Red color with error status. How to solve the above
Last updated: 2024-02-03

Post by alrcastro on How to upload application file to remote controller (offline) ? ^{CODESYS Forge talk (Post)}
I'm no longer working with this PLC brand, but if I were you, I would try to stop all related Codesys services before the copy and restart them after that.
Last updated: 2024-02-12

Post by eschwellinger on EtherCAT drive not moving ^{CODESYS Forge talk (Post)}
you need to switch to a realtime capable plc. Do not map variables, this will be done by the SoftMotion. And check the Ds402 parameters in the generic parameterview on the Softmotion Connector.
Last updated: 2024-03-05

Post by trycyclepower on Only single ehternet ip drive is communicating ^{CODESYS Forge talk (Post)}
Hi all, I have two ethernet IP drives not communicating together. If I disable one, then other one starts working. ENIPScnannerIOTak cycle is setup as 20ms. Also, PLC updating variables setting is on.
Last updated: 2024-03-08

Post by acc00 on Variable Sync Issue In Soft Plc Redundancy ^{CODESYS Forge talk (Post)}
Hi arundara, I'm also experimenting with Redundandcy. Is the sync variable function the following: "RedundancySynchronizeData()" ? Does the Task time increase a lot when you activate the sync function?
Last updated: 2024-03-11

Post by tk096 on High Cycle Times for SoftMotion_PlanningTask when using AxisGroup ^{CODESYS Forge talk (Post)}
Hi, you need a realtime capable plc. Codesys Control WinV3 is not realtime capable. https://content.helpme-codesys.com/en/CODESYS%20Control/_rtsl_performance_optimization_linux.html The last chapter of https://content.helpme-codesys.com/en/CODESYS%20SoftMotion/_sm_robotics_diagnosis_movement_problems.html deals with how to configure the planning task.
Last updated: 2024-03-13

Post by abinvest579 on Function Block ^{CODESYS Forge talk (Post)}
Rockwell PLC AOI have signature and Version with security dat file. Is there same functionality is available in codesys? Please share related video or Document. Thanks in advance
Last updated: 2024-03-27

Post by wiresplus on Remote connection to ifm PLC & HMI ^{CODESYS Forge talk (Post)}
I use these Teltonika routers with ZeroTier rather than OpenVPN - works better for me. I can show you how if you like?
Last updated: 2024-04-13

Post by ademarvribeiro on Upload program ^{CODESYS Forge talk (Post)}
Hello. in my experience, always click "Yes to all" to prevent error when go online. in this way, do you granted the infomation about hardware are the same, and dont lose " PLC configuration" for example.
Last updated: 2024-05-01

Post by vkira on Radio module on wago 750-8217 ^{CODESYS Forge talk (Post)}
Hello. Tell me how to connect to the internal radio module PLC 750-8217. I use the gsm sms_01 library. I don't understand how to connect. via com port? what's the address?
Last updated: 2024-05-06

Post by pasillalej on No gateway with the given settings could be found ^{CODESYS Forge talk (Post)}
Go to Online>Communication Parameters...>Gateway>TCP/IP> Click on "New..." and reestablish your connections with whatever IP address and set up information you have. Bypass whatever is necessary as you may have to redownload to the PLC.
Last updated: 2024-05-09

Post by hjohnson123 on PLC Memory consumption? ^{CODESYS Forge talk (Post)}
Hi, How can you access the <root> of the Linux system? I'm struggling with this as the code above results in an invalid handle, as it cannot access '/'.</root> I am using Control for Raspberry Pi for context. Thanks.
Last updated: 2024-06-05

Post by andreag0 on How to access to variable value through symbolic string name ^{CODESYS Forge talk (Post)}
Good to know. I am looking for some soluction to avoid PLC Handler and OPC-UA. Thank you.
Last updated: 2024-06-14

Post by ignat on [SOLVED] Safety EL6900 - SELC0012 Invalid number of connections[ ^{CODESYS Forge talk (Post)}
Hi kurvanov, could you please share the video you mentioned. I am struggling with basic data intechange between safety module and basic plc logic
Last updated: 2024-06-17

Post by aniket-b on Scara3 kinematic robot error ^{CODESYS Forge talk (Post)}
I am using Scara3 kinematic with EtherCAT PLC. The robot stops at the same place randomly after few cycles. Check attached image. I am getting SMC_ERROR.SMC_DI_FIELDBUS_LOST_SYNCRONICITY in all 3 axes.
Last updated: 2025-12-19

Post by gseidel on CODESYS SoftMotion Generic DSP402 on WAGO PFC200 + Festo CMMT-AS: MC_Power stays Busy, Controlword remains 0 ^{CODESYS Forge talk (Post)}
Hi gilad, I cannot tell for sure. But I think it should work on any PLC that is capable of doing motion control. Best regards, Georg
Last updated: 2026-07-01

Post by bruno-roth on Parker Compax3 controlled by Schneider LMC 201 ^{CODESYS Forge talk (Post)}
Hello, you could use any CODESYS PLC which has an EtherCAT master and the possibility to run the CODESYS Softmotion.
Last updated: 2026-01-13

Post by skribblio on Port instantiation of serial interface in WAGO PLC using Modb_L05.lib in CoDeSys v2.3 ^{CODESYS Forge talk (Post)}
I have to express my appreciation to you for the great read!! No question, I loved every part of it. I have you bookmarked to see the new stuff you post Skribbl IO
Last updated: 2026-06-11

Post by jeffyech on <Dereference of invalid pointer> ^{CODESYS Forge talk (Post)}
I have a program which calls a structure. while online with the PLC, I get: <dereference of="" invalid="" pointer=""> in the declaration values area. What are the causes of this? Can it be solved?</dereference> Version 3.5 of codesys.
Last updated: 2026-06-25

Post by gatto on Two licenses have to be installed forgot to enable one license ^{CODESYS Forge talk (Post)}
Hi. What type of PLC do you have? What activation method do you use? What license ticket did you purchase and want to activate? Can you describe the process you followed step by step?
Last updated: 2026-02-02

Post by mrkm-dic on CODESYS: Combining Master Redundancy with EtherCAT Ring Topology – Is it Supported? ^{CODESYS Forge talk (Post)}
Hello, I would like to ask whether it is technically supported (and practically achievable) to combine CODESYS Master Redundancy with EtherCAT ring (loop) redundancy in the same system. System setup CODESYS version: CODESYS 3.5.21.40 CODESYS Control SL for Weidmuller u-OS-4.12.2.0 Controllers (Masters): Weidmuller UC20-M4000 ×2, configured as Active / Standby using CODESYS redundancy EtherCAT Slaves: Weidmuller UR20-FBC-EC ×3, supporting EtherCAT ring / line break detection Topology: EtherCAT ring (loop) Main question Is it officially supported to use: ・CODESYS PLC/Master redundancy (Active/Standby) and ・EtherCAT ring topology (for cable redundancy) at the same time? Expected behavior Our expectation is: ・When the Active PLC fails, the Standby PLC becomes Active ・The Standby PLC then takes over the role of EtherCAT Master ・EtherCAT communication is re-established ・I/O control continues after reinitialization (a short interruption is acceptable; no strict bumpless requirement) We do not expect completely seamless / zero-cycle switchover, but we want to understand: ・Whether this combination is supported by design ・Or whether there are known limitations or restrictions when EtherCAT ring mode is used together with Master redundancy Clarification At this stage, the question is mainly about feasibility and support, not about a specific error message yet. Any official guidance, limitations, or real-world experience would be greatly appreciated. Thank you in advance.
Last updated: 2026-02-05

Post by alex-n on Problem with keeping up the distance between two axes ^{CODESYS Forge talk (Post)}
We use Inovance AC802 as PLC, IS810N Drive, library 4.10, connection via Ethercat and no any suprise at work.
Last updated: 2026-06-02

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