Post by rajatdas2005 on Codesys Virtual control SL ^{CODESYS Forge talk (Post)}
Hi, after this when I am trying login I am facing another error. However in the logfile there is no error. Please check the screenshot
Last updated: 2025-08-08

Post by rajatdas2005 on Codesys Virtual control SL ^{CODESYS Forge talk (Post)}
Thank you. With a strong password it is working.
Last updated: 2025-08-08

Post by eschwellinger on Codesys Virtual control SL ^{CODESYS Forge talk (Post)}
hm..please delpoy a virtual edgegateway beside the virtual control and use this as EdgeGateway to login to your virtual plc.
Last updated: 2025-08-08

Allen Bradley to Codesys conversion ^{CODESYS Forge talk (Thread)}
Allen Bradley to Codesys conversion
Last updated: 2025-08-08

Post by bruceae on Allen Bradley to Codesys conversion ^{CODESYS Forge talk (Post)}
Hello Everyone, I was hoping to get some assistance or general directions on the codesys equivalent of some Studio 5000 commands and data types; Data Types; SCK_TCP Commands; CPS
Last updated: 2025-08-08

Post by eschwellinger on Codesys Virtual control SL ^{CODESYS Forge talk (Post)}
yes I would recommend that..
Last updated: 2025-08-08

Post by rajatdas2005 on Codesys Virtual control SL ^{CODESYS Forge talk (Post)}
Thanks once again. Right now the codesys virtual control sl docker is using the host ip itself not the docker ip. so the local host edge gateway was able to search the virtual plc. so you are telling me instead of local host edge gateway I should use the edge gateway docker version?
Last updated: 2025-08-08

Post by phryniszak on RPI CANFD ^{CODESYS Forge talk (Post)}
Hi, I have rpi with CANFD MCP2518FD. Classic can communication is working OK but when I try open in CANFD hDriver := CL2.FdDriverOpenH(usiNetId := 0, uiNominalBaudrate := 500, uiDataBaudrate := 0, xSupport29Bits := FALSE, ctMessages := 100, peError := ADR(eError) error is returned with value 10226 which is not documented (https://content.helpme-codesys.com/en/libs/CAA%20Can%20Low%20Level%20Extern/Current/CAN-Low-Level/Enums/ERROR.html#error) CAA CanL2 is 3.5.21 version. Question is: 1. Is anyone get CANFD working? 2. What is meaning of this value (10226)? Regards, Pawel
Last updated: 2025-08-09

RPI CANFD ^{CODESYS Forge talk (Thread)}
RPI CANFD
Last updated: 2025-08-09

Post by phryniszak on RPI CANFD ^{CODESYS Forge talk (Post)}
Hi, I have rpi with CANFD MCP2518FD. Classic can communication is working OK but when I try open in CANFD hDriver := CL2.FdDriverOpenH(usiNetId := 0, uiNominalBaudrate := 500, uiDataBaudrate := 0, xSupport29Bits := FALSE, ctMessages := 100, peError := ADR(eError) error is returned with value 10226 which is not documented (https://content.helpme-codesys.com/en/libs/CAA%20Can%20Low%20Level%20Extern/Current/CAN-Low-Level/Enums/ERROR.html#error) CAA CanL2 is 3.5.21 version. Question is: 1. Is anyone get CANFD working? 2. What is meaning of this value (10226)? Regards, Pawel
Last updated: 2025-08-09

RPI CANFD ^{CODESYS Forge talk (Thread)}
RPI CANFD
Last updated: 2025-08-09

Post by andrej on Signing of Boot Application for Raspberry Pi ^{CODESYS Forge talk (Post)}
Hello all, I tried to encrypt the Boot Application (not just to sign it). I got the same Error message as above. Is an additional licencse necessary to sign the boot application for raspberry pi. Thanks for your confirmation. Kind regards Andreas
Last updated: 2025-08-10

Signing of Boot Application for Raspberry Pi ^{CODESYS Forge talk (Thread)}
Signing of Boot Application for Raspberry Pi
Last updated: 2025-08-10

Post by artplc on 3.5 P20 hangs - no response ^{CODESYS Forge talk (Post)}
Subject: Solution: CODESYS Freezes Linked to Large Symbol Configuration (OPC UA) Hello everyone, I was experiencing the same problem as many here: CODESYS (v3.5 SP20+) freezing during compilation and download, especially on projects that use OPC UA for SCADA. The only workaround was to run Build > Clean all before every download. I believe I have found the root cause and a permanent solution. The Problem: The issue is directly related to a large Symbol Configuration. In my project, I only need about 700 tags for OPC UA, but the Symbol Configuration list was showing over 250,000 tags. This is because it automatically includes all variables from Global Variable Lists (GVLs) and other memory areas. When any static variable is changed, the IDE tries to rebuild this enormous list, causing it to freeze for several minutes. The Solution: Instead of letting CODESYS export every variable by default, you can use a pragma to tell it which variables or GVLs to exclude from the symbol export process. Place the following pragma at the top of any GVL or data structure that you do not want to be part of the symbol configuration: 1 {attribute 'symbol' := 'none'} 2 VAR_GLOBAL 3 // All variables in this GVL will now be excluded from the 4 // Symbol Configuration by default. 5 InternalVariable1 : INT; 6 InternalVariable2 : BOOL; 7 END_VAR After adding this pragma to all the GVLs that were not needed for OPC UA, the number of tags in my Symbol Configuration dropped to the correct amount. The compilation and download process is now fast again, with no freezing. This method is much more efficient than manually managing the symbol list in the editor. I hope this helps others who are facing this frustrating issue. Best regards.
Last updated: 2025-08-10

3.5 P20 hangs - no response ^{CODESYS Forge talk (Thread)}
3.5 P20 hangs - no response
Last updated: 2025-08-10

Post by rajatdas2005 on Codesys Virtual control SL ^{CODESYS Forge talk (Post)}
Thank you. Its working now.
Last updated: 2025-08-11

Post by madskaizer on Task Priority Documentation? ^{CODESYS Forge talk (Post)}
Hi All I was watching the Wago PFC300 webinar ( https://www.wago.com/global/lp-thank-you-onlineseminar-pfc-300 ), and the presenters comment about priority 1 being way above the Ethernet task priority, so that a priority 1 PLC program can actually loose SCADA connection, made me try to round up some hard evidence on Codesys Priorities. I find there is very little information on "correct" task priority configuration. There is a lot of different hardware manufacturers, using Codesys Runtime, that has different descriptions in their manuals on how to set up priority. https://doku.amk-motion.com/en/Subsystems/PDK_202975_A-Serie_en/Content/Projekt/AMKAMAC/PDK_202975_A4-A5_Produktbeschreibung/Funktionalitaet/PLC-Programming/PLC%20Tasks.htm?TocPath=PLC-Programming%7C_____7 https://product-help.schneider-electric.com/Machine%20Expert/V1.1/en/SoMProg/index.htm?#t=SoMProg%2FTask_Editor%2FTask_Editor-7.htm&rhsearch=priority&rhhlterm=priority&rhsyns=%20&SUBSTRSRCH=1 https://content.helpme-codesys.com/en/CODESYS%20Development%20System/_cds_f_task_configuration.html So my questions :) 1) If there is only 1 PLC_PRG task, does priority matter? 2) What is the priority of Ethernet / communication, if nothing is entered? 3) What is the priority of Codesys OPC UA server? 4) Some users here on forge mentions that Wago PLC programs should run as priority 11, but where does this recommendation origin from? 5) What are you recommendations for a relatively slow process, like building automation? It uses OPC UA for communication to SCADA, maybe some MODBUS-RTU and MODBUS-TCP, usually around 100 I/O, been running with everything in a single task at priority 1, 50-100ms cycle time. Some controllers have separate MODBUS tasks, but doesn't seem like a big difference. How would you recommend splitting up communication, IO fieldbus and programs into differently prioritized tasks? I know its a complex matter and all about my application, but I really miss there was just some kind of guidance in the documentations and with all new standard Codesys programs having priority 1 as default, makes it seem less important, than it really is.
Last updated: 2025-08-11

OPC UA Information Model Error "Dimensions must be empty" ^{CODESYS Forge talk (Thread)}
OPC UA Information Model Error "Dimensions must be empty"
Last updated: 2025-08-11

Post by astrum on OPC UA Information Model Error "Dimensions must be empty" ^{CODESYS Forge talk (Post)}
Hello everyone, does anyone know what this error means: Internal Error in code generation for http://opcfoundation.org/UA/DI/: Dimensions must be empty. I use the standard information models from Codesys and haven't even called the Information Model, but my program can't compile. the only thing I did was to insert the Communication Manage.
Last updated: 2025-08-11

Task Priority Documentation? ^{CODESYS Forge talk (Thread)}
Task Priority Documentation?
Last updated: 2025-08-11

Post by naci30 on Erreur bibliothèque WagoSysKbusTerminalControl et WagoSysKbusServices pour la gestion de la carte 750-671 ^{CODESYS Forge talk (Post)}
Bonjour, je suis novice, je rencontre un problème pour mon projet la gestion d'un moteur stepper. j’ai des erreurs dans mon code lié à la carte stepper et aux bibliothèques et je n’avance plus. J'ai joint les différentes captures d'ecran, j’explique ce que j’ai dejà fait fait : - j’ai isolé le code du stepper dans un unique projet afin de déceler d’où venait le problème afin de ne pas modifier totalement tout le projet. Ce que j’ai fait: J’ai supprimé les bibliothèques et j’ai réinstallé, j’ai les bonnes versions. J’ai supprimé le 750-671 du KBUS je l’ai réinstallé pareil. J’ai Nettoyé le code pour pouvoir le recompilé pareil. Je précise la version de mon codesys est : V3.5 SP21 patch 1 J’ai joint les différentes captures d’écran: les bibliothèques, le code de test, les 34 erreurs.
Last updated: 2025-08-11

Post by akrawczyk on Dynamically enabling/disabling Modbus slave devices in runtime (performance issue with timeouts) ^{CODESYS Forge talk (Post)}
Hi everyone, I'm working on a CODESYS-based project running on a Weintek cMT2078X HMI with a built-in CODESYS runtime. The system communicates with multiple Modbus RTU slave devices, arranged in a cascade. The number of connected units can vary between 2 and 8, depending on the installation. Each slave has 17 Modbus channels, which are polled cyclically every 5 seconds. The issue is that when fewer devices are physically connected (e.g. only 3 out of 8), the Modbus master still attempts to communicate with all configured slaves. This leads to massive delays due to timeouts (currently 200ms per channel). For one disconnected device, that’s: 17 × 200ms = 3.4 seconds of delay per polling cycle, and this quickly multiplies with each additional missing slave. This behavior significantly degrades the system's performance and responsiveness. We attempted a workaround where we tried to trigger polling based on a variable in the PLC program, but this caused instability and even led to hardware hangs/freezes on the cMT2078X – likely due to clashes in how the Modbus polling engine and program logic interact at runtime. My main questions are: Is there a way in CODESYS to dynamically enable/disable Modbus slave devices at runtime, using a BOOL or INT variable (e.g. indicating number of active slaves)? Can devices or channels be conditionally polled or temporarily disabled without removing them from the device tree? Are there any best practices or examples for handling variable numbers of Modbus slaves in scalable systems like this? Would splitting communication across tasks or interfaces help reduce the impact of timeouts? Any advice, documentation references, or architectural suggestions would be extremely helpful. I'm looking for a robust way to dynamically scale slave polling without degrading system stability or performance. Thanks in advance!
Last updated: 2025-08-11

Codesys Virtual control SL ^{CODESYS Forge talk (Thread)}
Codesys Virtual control SL
Last updated: 2025-08-11

Post by yannickasselin on Dynamically enabling/disabling Modbus slave devices in runtime (performance issue with timeouts) ^{CODESYS Forge talk (Post)}
I would definitely try using the "Reconfigure" function block from "CAA Device Diagnosis@ library. https://content.helpme-codesys.com/en/libs/CAA%20Device%20Diagnosis/3.5.17.0/CAA-Device-Diagnosis/Function-Blocks/Reconfigure/Reconfigure.html#:~:text=This%20function%20block%20reads%20and,take%20effect. Although I have not tried it with Modbus, I had great success with EtherNet/IP, Profinet and EtherCAT. You can also have a look at the other functions in this library. There are useful functions to help iterate through all the nodes under a master node.
Last updated: 2025-08-12

Post by dkugler on Erreur bibliothèque WagoSysKbusTerminalControl et WagoSysKbusServices pour la gestion de la carte 750-671 ^{CODESYS Forge talk (Post)}
Hi naci, because this is a english forum it increases the chance to get help a lot if you translate your questions into english before posting :-) happy coding!
Last updated: 2025-08-12

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