Post by lamine97 on Issue with Timer-Based Increment Function in CoDeSys Ladder Logic (LD) ^{CODESYS Forge talk (Post)}
I am trying to implement a Ladder Logic (LD) function block in CoDeSys that increments a value A by B every T time interval. My Structured Text (ST) version works perfectly in simulation, but when I implement it in LD, it does not work. The ST code: PROGRAM ADDITION VAR_INPUT A : LREAL ; B : LREAL ; T : TIME ; END_VAR VAR Timer : TON ; END_VAR Timer (IN:=TRUE, PT := T); IF Timer.Q THEN A := A + B ; Timer(IN := FALSE ) ; END_IF;
Last updated: 2025-03-25

Post by johnbomb on Ignore Dependencies When Loading Package? ^{CODESYS Forge talk (Post)}
I'm trying to load a .package into Codesys 3.5.21, but the package is intended to only work with Codesys 3.5.18.0 and is configured with dependencies on the specific versions of other packages included with 3.5.18.0, and 21 has newer versions so the package will not install. I would like to install the package anyway to try and get things working on a newer Codesys version, since for some reason the installer for .18 errors out and doesn't fully work in my environment, but .21 seems to work fine.
Last updated: 2025-04-01

Post by kuegerls on OpC UA server on Raspberry Pi MC SL - Certificate Issue ^{CODESYS Forge talk (Post)}
Hello, I have set up an OPC UA server following several guides, including this one: https://revolutionpi.com/documentation/tutorials/opc-ua-codesys-nodered/. The license for the runtime is installed on the device. However, I am unable to create a certificate for the OPC UA server in the security screen. I always get the error message: "The certificate has not been created by the device." Does anyone have an idea what might be causing this issue? Any help would be greatly appreciated! Thanks in advance! Best regards, Stefan
Last updated: 2025-04-02

Post by lookingforhelp on CODESYS v3.5 SP18 ^{CODESYS Forge talk (Post)}
Hello @community, i hope i will get a solution for following problem. I am using CODESYS v3.5 SP18. At the visualization i dont see the action for the element which i could set below the InputConfiguration-Section. I found a topic about that, but this could be resolved through activate the Advanced Checkbox. But in my case it did not work. See the screenshots. I hope someone know this problem and have a solution. Thank you in advance.
Last updated: 2025-04-17

Post by lookingforhelp on CODESYS v3.5 SP18 ^{CODESYS Forge talk (Post)}
Hello @community, i hope i will get a solution for following problem. I am using CODESYS v3.5 SP18. At the visualization i dont see the action for the element which i could set below the InputConfiguration-Section. I found a topic about that, but this could be resolved through activate the Advanced Checkbox. But in my case it did not work. See the screenshots. I hope someone know this problem and have a solution. Thank you in advance.
Last updated: 2025-04-17

Post by sercan on Connecting Parameter 'A' in G-Code to Physical Axis in CNC Project ^{CODESYS Forge talk (Post)}
I want to run the following command by linking it to the A-Axis: G01 A45.0 Which TRAFO should I use to do this? SMC_TRAFO_5Axes and SMC_TRAFO_GantryCutter3 function blocks did not work! For example, when SMC_TRAFO_5Axes is used, parameters B and C can be resolved by the transformer. However, parameter A cannot be resolved. Only SMC_Interpolator displays the value of parameter A in the SMC_Interpolator => piSetPosition.dA output. Should I drive this axis with SoftMotion commands (MC_MoveAbsolute etc.)?
Last updated: 2025-05-07

Post by glutenaron on Safety drive EL6900 and mitsubishi ^{CODESYS Forge talk (Post)}
Hi, Im wokring to get my servo mitsubishi mr-j5-g40-rnj1 working with my safety drive. I have as you can se in the picture Ek1100 koppler and EL6900 as safety plc. My questien is how do i connect the safety_drive to the SM3_Drive_ETC_Mitsubishi_MelServo_J5_Axis1 down below? I get the error ((Logical I/Os]: The logical device 'Safety_Drive' is not mapped to any physical device.)) but how do i map this? regard
Last updated: 2025-05-13

Post by nz-dave on Codesys 3.5.21 fails to copy file to USB ^{CODESYS Forge talk (Post)}
i had a similar problem trying to send files to C: on local computer. Ended up using Oscat ftp to transfer file with filezilla. i read there is an "write protection", possibly to do with windows, issue with sp19 and up. there are some config files in the codesys dir you can change, which may help. after i was able to transfer to local PC\downloads but not c: so went the ftp route. works well. https://forge.codesys.com/forge/talk/Runtime/thread/5cac1390b4/
Last updated: 2025-05-26

Post by arwie on Use MC_Home without enabling the drive for homing method 35 ^{CODESYS Forge talk (Post)}
Is it possible to use MC_Home without enabling the drive (MC_Power)? On the drive the homing method 35 (Homing on current position) has to be executed. The drive has to stay disabled due to safety. This is explicitly allowed by the drive. Unfortunately MC_Home reports the error SMC_REGULATOR_OR_START_NOT_SET when executed. Are there other options to start homing, if not with MC_Home?
Last updated: 2025-06-25

Post by fschuler on No connection to Raspberry at runtime installation ^{CODESYS Forge talk (Post)}
Hi, I try to install the Codesys realtime in a Raspberry PI 3B+. When I click on the installation button I get always the message No connection to device: An established connection was aborted by the server. Raspberry 3B+ with newest raspberry PI OS. Codesys 3.5.15 Patch 1 Codesys Runtime Package 3.5.16.20 SSH is activated. I can login with Putty Ping is possible IP address search is possible Just the installation is not started.
Last updated: 2025-07-23

Post by arwie on Working on exporting/importing projects to PlainText. ^{CODESYS Forge talk (Post)}
To better track project changes in git I created a script that exports the project structure as text files. Textual POUs are stored as text, everything else as XML (with timestamps removed). The file structure is stored under path/to/your.project.txt Git merge will not work, but at least tracking changes is much easier. Script: https://github.com/arwie/controlOS_demo/blob/main/codesys/txtfy.py Example output: https://github.com/arwie/controlOS_demo/tree/main/codesys/controlOS_demo.project.txt
Last updated: 2025-07-24

Post by eschwellinger on Changed Device of Rapberry Pi to MC SL instead of standard SL and cannot connect anymore ^{CODESYS Forge talk (Post)}
1) https://store.codesys.com/en/codesys-control-for-raspberry-pi-sl.html -> SL: Restrictions The combination of Raspberry Pi and a CODESYS Runtime is for private use, test and teaching purposes. Commercial use is not permitted. 2) you could switch between them by /etc/codesyscontrol/CODESYSControl_User.cfg [CmpRasPi] Architecture=armv7l for MC: armv7l for SC: armv6l for 64Bit: aarch64 or in the Deploytool:
Last updated: 2025-08-06

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

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

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 pernockham on Persistence Manager: Config File not found? ^{CODESYS Forge talk (Post)}
I still cannot enable persistent manager for my project (and successfully login to a device). Project compiles with no errors but during download/login it fails with the fairly limited message "one or more errors occurred". The only clue I get from the system that this messages is displayed during "Generating code..: relocation pou". Any tips pointing me in a direction how to solve this very much appreciated!
Last updated: 2025-08-22

Post by sigurdrb on Network log messages ^{CODESYS Forge talk (Post)}
Hi, I'm having some trouble with an OPC client connecting to the PLC. It could be that the problem is on the client side of things. The PLC have UPS power, but the switch and OPC client does not. It could explain some of the log messages. Could any of you help debugging by the log messages in the attachment? And if possible point me to the right library that explains the different messages? Thanks for all the help.
Last updated: 2025-09-11

Post by monw on Unable to Re-Import Native XML Exported Using CODESYS Script API ^{CODESYS Forge talk (Post)}
When exporting a Logical Device or Logical Exchange GVL using the native XML export functionality of the CODESYS Script API, I encounter the following error upon re-import: "Error in IEnumeratorOfTWrapper. Current. Could not cast: System.String in System.Char" I am using CODESYS V3.5 SP21 Patch 2. Is there a known solution or workaround for this issue? Notably, importing the same XML file through the CODESYS Engineering IDE's menu import works without error.
Last updated: 2025-09-12

Post by nha451 on EIP Scanner not receiving data from adapter ^{CODESYS Forge talk (Post)}
Hello, I have an EtherNet IP adapter (GoPxL) running with a virtual PLC. I have successfully connected the adapter with green icons next to it. On WireShark I can see the data coming from GoPxL but on CODESYS it shows up as all 0. My firewall is turned off and I have enabled the device to always update variables. I tested my set up with Profinet and I can receive the data. Please let me know if you have any suggestions!
Last updated: 2025-09-12

Post by reinier-geers on CAnopen stack ^{CODESYS Forge talk (Post)}
Ive got a project with 6 devices . Version 3.5.9.2 Now i change one to a other device 3.5.20.40 So i update the project to V3.5.20.4 Now i have a lot off faults in the canopendevices . Somehowe the first has no problem and seems that the canopenstackts stays in V3.5.9.2 the others in V4.2.0.0 But i cant put it back to 3.5.9.2 WHY ? And how can now witch one i can update and witch one not ?
Last updated: 2025-09-22

Post by reinier-geers on CAnopen stack ^{CODESYS Forge talk (Post)}
Ive got a project with 6 devices . Version 3.5.9.2 Now i change one to a other device 3.5.20.40 So i update the project to V3.5.20.4 Now i have a lot off faults in the canopendevices . Somehowe the first has no problem and seems that the canopenstackts stays in V3.5.9.2 the others in V4.2.0.0 But i cant put it back to 3.5.9.2 WHY ? And how can now witch one i can update and witch one not ?
Last updated: 2025-09-22

Post by esther on subdevicesCollapsed attribute in deviceDescriptor ^{CODESYS Forge talk (Post)}
I was trying to use subdevicesCollapsed attribute in device descriptor in order to not expand the subdevices when a new device with subdevices is inserted in the device tree. I use this as follows:<fixed subdevicescollapsed="true">. But it seems it doesn`t work. I am ussing Codesys v3.5 SP16 Patch4. Is anything wrong with this? Or am I mistaken with the use of this attirbute?</fixed>
Last updated: 2025-10-01

Post by gseidel on MC_MoveAbsolute: C0138: No matching 'FB_Init' method found for instantiation of SMC_MoveAbsRelPerformerImpl [ERROR] ^{CODESYS Forge talk (Post)}
Hi imdatatas, sorry to hear this issue caused so much overhead for you. Frankly, I'd expect a project created with an older version to compile without errors after opening > it with the latest Codesys version and updating all libraries. Yes, that is a reasonable expectation. I tried a few times but could not reproduce the problem. In case you run into the problem again, we can investigate the issue if you send a project archive. Best regards, Georg
Last updated: 2025-10-02

Post by timvh on How to correctly create a device descriptor (.devdesc.xml) for a custom Linux ARM64 PLC in CODESYS 3.5.21.20? ^{CODESYS Forge talk (Post)}
If you are a vendor of controllers and want to have your own CODESYS Runtime on your device, then you need to contact the CODESYS Sales team and ask for the runtime Toolkit. For resellers of CODESYS devices, this can be interesting. If it is only for a few devices, then why not just take the standard runtime?
Last updated: 2025-10-07

Post by mdetrana on VPLC Section 'Gray-ed Out' ^{CODESYS Forge talk (Post)}
When evaluating Codesys functionality, I found that the VPLC tab under Deploy Control SL > Operation > VPLCs is 'gray-ed out', see attached image. I'm trying to evaluate how my infrastructure will interact with Codesys on a Raspberry Pi 4, so I'm trying to demo running it. I was going through the Codesys tutorial here, and it never shows the tab as grey, so I do not know how to proceed. Let me know if I can get any additional information that can help.
Last updated: 2025-10-09

Sort by relevance or date