Post by tayhim on WAGO HMI Device not found ^{CODESYS Forge talk (Post)}
Hello, I'm trying to connect with a Wago TP600 HMI but without success. I'm using codysis 3.5 SP19 patch 7 (SP20 block all the time) and the official wago package is installed. However, when I scan and select my device, I get a message saying that the device doesn't match the project's device object with the possibility to update the device (as shown in the attached picture). however, after choosing to update i got a message that the device is not found. I've tried with a new empty project but the same results. do you have any ideas? Thanks.
Last updated: 2024-06-25

Post by etalp on Eaton XC303 firmware update via USB ^{CODESYS Forge talk (Post)}
Hi, I'm struggling with updating my xc303 to firmware 3.5.17. It is possible only via USB port. I've installed proper update files on the USB then plug it into the PLC's USB port and restarted the device. Shortly after LED's on the PLC started to blink, so updating process has started. But after 10 minutes the PLC LED turned off and after all I could't serach for this PLC in Codesys, but could ping it. Could someone eplain to me proper procedure of updating the fimrware in XC303 via USB? Is it neccesary to STOP the PLC switch after pluging the USB?
Last updated: 2025-10-15

Post by s1mon on Two OneWireMaster on one Raspberry PI 5 ^{CODESYS Forge talk (Post)}
I don't know why the EtherCat fails, but what happens is: First I have only one 1WireMaster running on my Raspberry Pi and EtherCat is running fine. Then I'd like to add a 2nd 1WireMaster. Therefore I enable a 2nd GPIO Pin on the raspberry in the file "/boot/firmware/config.txt". dtoverlay=w1-gpio,gpiopin=4,pullup=0 dtoverlay=w1-gpio,gpiopin=23,pullup=0 To be able to use this 2nd 1WireMaster in Codesys Runtime I Adjust the CODESYScontrol.cfg file and add there: PlaceholderFilePath.2=/sys/devices/w1_bus_master2, $OneWire2$ After a reboot the EtherCat Master is not working any more. I didn't even add a 2nd OneWire Master in Codesys, but still if I do the EtherCat does not work. Do you have an idea why?
Last updated: 2025-10-21

Post by malte on OPC UA multiple Endpoints ^{CODESYS Forge talk (Post)}
My CODESYS OPC UA server provides endpoints using both the hostname and the IP address. Connecting via the IP address works fine, but connecting via the hostname does not. The endpoint list shows both opc.tcp://<hostname>:4840 and opc.tcp://<ip>:4840. When using the hostname, the OPC UA client (UA Expert) fails to connect. Using the IP address connects without issues. Main goal is to conect via Python but opcua-asyncio seems to prefer the hostname. How can I configure CODESYS or my system so that the OPC UA connection via hostname also works properly or disable it completly? Running Codesys for PFC200 sl 4.18.0.0
Last updated: 2025-10-28

Post by bitor-leao on *EXCEPTION* [ProsessorLoadWatchdog] codesys 3.5.11.40 ^{CODESYS Forge talk (Post)}
Good night. I am having a problem with CODESYS 3.5.11.40, which gives the exception EXCEPTION [ProcessorLoadWatchdog]. I followed some forum posts and tried to modify the CODESYSControl.cfg file, but it shows: [SysFile] Windows.WorkingDirectory=C:\ProgramData\CODESYS\CODESYSControlWinV3\D5050FE1 Then I go to this directory and try to modify CODESYSControl.cfg according to the forums, but it doesn’t work: [CmpSchedule] ;EnableLogger=0 ProcessorLoad.Maximum=80 ;Timeslicing.Mode=Internal ;Timeslicing.PlcSlicePercent=80 ;Timeslicing.PlcSliceUs=4000 ;Timeslicing.StartOnProcessorLoad=1 ;SchedulerPriority=5 ;SchedulerInterval=1000 I tried to change ProcessorLoad.Maximum to 0 or 100, but it doesn’t compile when I try. I really don’t know what to do,
Last updated: 2025-11-16

Post by bitor-leao on *EXCEPTION* [ProsessorLoadWatchdog] codesys 3.5.11.40 ^{CODESYS Forge talk (Post)}
Good night. I am having a problem with CODESYS 3.5.11.40, which gives the exception EXCEPTION [ProcessorLoadWatchdog]. I followed some forum posts and tried to modify the CODESYSControl.cfg file, but it shows: [SysFile] Windows.WorkingDirectory=C:\ProgramData\CODESYS\CODESYSControlWinV3\D5050FE1 Then I go to this directory and try to modify CODESYSControl.cfg according to the forums, but it doesn’t work: [CmpSchedule] ;EnableLogger=0 ProcessorLoad.Maximum=80 ;Timeslicing.Mode=Internal ;Timeslicing.PlcSlicePercent=80 ;Timeslicing.PlcSliceUs=4000 ;Timeslicing.StartOnProcessorLoad=1 ;SchedulerPriority=5 ;SchedulerInterval=1000 I tried to change ProcessorLoad.Maximum to 0 or 100, but it doesn’t compile when I try. I really don’t know what to do,
Last updated: 2025-11-16

Post by davidbo on RETAIN PERSISTENT only stored at gracefully shutdown? ^{CODESYS Forge talk (Post)}
I have {attribute 'checksumnoinit_override' := '2629838988'} {attribute 'init_related_code' := '5c6efcf8-e0f4-4166-a9fa-17eadd8908df'} VAR_GLOBAL RETAIN PERSISTENT {attribute 'order_in_persistent_editor' := '0'} segmentValue: ARRAY[0..49] OF REAL; {attribute 'order_in_persistent_editor' := '1'} segmentTime: ARRAY[0..49] OF REAL; // Generated instance path of persistent variable PRG.test: INT; // Generated instance path of persistent variable PRG.nw_storage: SysSocket_Implementation.SysSocket_Interfaces.SOCK_ADAPTER_INFORMATION2; END_VAR When I have changed PRG.nw_storage it will not be stored at a power off, but if I do a: sudo systemctl restart codesycontrol and then a power off it will be stored. Is there a way to store persistent variables without a restart of codesyscontrol? Can anyone explain how and when CODESYS store persistent variables?
Last updated: 2025-11-17

Post by mr-ege on Error: C0138: No matching 'FB_Init' method found for instantiation of VisuClientObjectMgr ^{CODESYS Forge talk (Post)}
Hi all! I'm trying to learn PLC Programing. Today I was making a simple PLC program, as you can see. When I compile the program without the visualization, there are no errors. However, when I add the visualization and then compile it, I get this error. I don’t know how to solve the problem. I have tried the following solutions: rebooting the PC and updating the software. Error Code: C0138: No matching 'FB_Init' method found for instantiation of VisuClientObjectMgr Compile complete -- 1 errors, 0 warnings Build complete -- 1 errors, 0 warnings : No download possible Version: CODESYS V3.5 SP21 Patch 3
Last updated: 2025-11-25

Post by gseidel on Can't get SMC_SmoothPath to work ^{CODESYS Forge talk (Post)}
Hi bertus, I cannot see any problem in the code you posted. Just some ideas: What is the value of D_ANGLE_TOL? - Do you need the assignment bAbort := NOT bDecoder? Does it help to leave it out? Any errors (e.g. SMC_SmoothPath.Error/ErrorID) or PLC log messages? What if you comment out SMC_SmoothMerge and SMC_LimtiDynamics, is corner smoothing still not working? Is bDecode written from a different task (e.g. visu)? Then I would recommend to assign to a local variable (bDecodeLocal := bDecode) and use that for all FBs. Otherwise, FBs might see different values of bDecode in a single cycle, which will cause problems. Regards, Georg
Last updated: 2025-12-17

Post by timvh on Codesys complains about matching versions ^{CODESYS Forge talk (Post)}
Open the CODESYS Installer. Create an export file from your current PC from your current version. Then on the other PC Open the installer and install a new version based on the same essentials version, but additionally select the export file which you have created on the first PC. Or just install (import) it within the already existing version. For the installer, you can install it from: https://store.codesys.com/en/codesys-installer.html For help see: https://content.helpme-codesys.com/en/CODESYS%20Installer/_inst_install_setups_and_addons.html On PC 1, save the project as projectarchive (which will then include all the libraries and devices). Then extract this projectarchive on PC 2.
Last updated: 2025-12-15

Post by infinitetool on No connection could be made because the target machine actively refused it ^{CODESYS Forge talk (Post)}
Hi! I'm having trouble connecting to a device in Deploy Control SL. I'm able to see the device is available during a scan, and I can ping the device as well, but when I try to connect I get the message "No connection could be made because the target machine actively refused it". I've worked on this for hours including turning off the firewall on the device PC but nothing seems to work. The device is running a fresh install of Windows 11 IoT Enterprise 2024 and the Development System is 3.5.21.50 running on Windows 11. Thank you in advance for any ideas!
Last updated: 2026-03-10

Post by rau00 on Touch Probe 0x60B8 writting ^{CODESYS Forge talk (Post)}
Hi erveyone, Rau here, first time asking on CODESYS Forge: When working with my servodrives, a special behaviour is required on dsp402 0x60B8 object, a control that is not supported by MC_TouchProbe. For this reason, I'd like to ask: Anyone knows if there is any way to bypass or change the softmotion axis writting into 0x60B8 object? My main problem is that MC_TouchProbe.TriggerInput.iTriggerNumber only allows to choose between TP 1 and TP 2 (not both at the same time). iTriggerNumber only allows values [0, 1, 2, 3], other values triggers an error in the FB, wether SMC_TP_COMM_ERROR for values [4, 5, 6, 7] and SMC_TRIGGER_OUT_OF_RANGE with any other value. Best regards, Guillem
Last updated: 2026-04-10

Post by phuvutran on CODESYS Date/Time Picker in Dialog does not update value on close (focus issue) – any workaround? ^{CODESYS Forge talk (Post)}
Hi everyone, I am working with CODESYS 3.5.21 and using the Date/Time Picker inside a dialog (popup visualization). I noticed a behavior that seems problematic: The Date/Time Picker does NOT update the bound variable immediately. It only updates when the control loses focus/select. This causes an issue in my dialog: User selects a new date/time Immediately presses OK (which closes the dialog) The new value is NOT saved The variable still contains the old value So it seems the Date/Time Picker still holds the value internally and does not commit it before the dialog is closed.
Last updated: 2026-05-20

Post by baotthitawat on SCADA Systems Are Becoming Easier to Integrate With Modern Applications ^{CODESYS Forge talk (Post)}
One thing I’ve been seeing recently is that more industrial systems are starting to expose realtime SCADA data through APIs instead of keeping everything isolated inside the local monitoring software. This makes integration much easier for cloud platforms, mobile dashboards, AI analytics, and enterprise applications that need realtime industrial data. Instead of exporting reports manually or building complicated middleware, APIs allow external systems to access SCADA data directly in realtime. I think this becomes especially useful for applications like wastewater treatment monitoring, where operators need better visibility into alarms, equipment status, and operational conditions across different locations. Feels like modern SCADA is slowly evolving from a standalone monitoring platform into part of a larger connected industrial ecosystem.
Last updated: 2026-05-28

Post by baotthitawat on SCADA Systems Are Becoming Easier to Integrate With Modern Applications ^{CODESYS Forge talk (Post)}
One thing I’ve been seeing recently is that more industrial systems are starting to expose realtime SCADA data through APIs instead of keeping everything isolated inside the local monitoring software. This makes integration much easier for cloud platforms, mobile dashboards, AI analytics, and enterprise applications that need realtime industrial data. Instead of exporting reports manually or building complicated middleware, APIs allow external systems to access SCADA data directly in realtime. I think this becomes especially useful for applications like wastewater treatment monitoring, where operators need better visibility into alarms, equipment status, and operational conditions across different locations. Feels like modern SCADA is slowly evolving from a standalone monitoring platform into part of a larger connected industrial ecosystem.
Last updated: 2026-05-28

Post by baotthitawat on SCADA Systems Are Becoming Easier to Integrate With Modern Applications ^{CODESYS Forge talk (Post)}
One thing I’ve been seeing recently is that more industrial systems are starting to expose realtime SCADA data through APIs instead of keeping everything isolated inside the local monitoring software. This makes integration much easier for cloud platforms, mobile dashboards, AI analytics, and enterprise applications that need realtime industrial data. Instead of exporting reports manually or building complicated middleware, APIs allow external systems to access SCADA data directly in realtime. I think this becomes especially useful for applications like wastewater treatment monitoring, where operators need better visibility into alarms, equipment status, and operational conditions across different locations. Feels like modern SCADA is slowly evolving from a standalone monitoring platform into part of a larger connected industrial ecosystem.
Last updated: 2026-05-28

Post by cvrettacos-dse on Table Element Scroll Return ^{CODESYS Forge talk (Post)}
Hello, I would like to use swipe/pan gestures to scroll a table visualization element (CODESYS 3.5.21.10) on a DSE M810 display. The swipe / pan gesture control works fine, however, I cannot figure out how to reset / navigate to the top of the table again with code. I have tried the Scrolling begin variable, and the visu manager is setting it to FALSE right away but the table doesn't actually scroll back to top. If I check the “Scroll elements with scrollbar” box, then the Scrolling begin variable works perfectly, but now the swipe/pan scrolling no longer works and you have to use the scrollbar. Is it possible to do what I've described? Any assitence you can provide is appreciated. Thanks.
Last updated: 2026-06-10

Post by egerobotics on [New Hardware] EtherCAT Digital & Analog IO Board – CODESYS Compatible, All Channels Isolated ^{CODESYS Forge talk (Post)}
Hi everyone, I'd like to share a new EtherCAT slave I/O board I've developed — the EtherCAT Digital & Analog IO Board by EGEROBOTICS. Key specs: 12x isolated digital outputs (24VDC) 12x isolated digital inputs (24VDC) 4x isolated 0–10V analog outputs (12-bit DAC) 4x isolated 0–10V analog inputs (12-bit ADC) All channels galvanically isolated 24VDC powered EtherCAT CoE protocol Typical use cases: Analog servo drive speed reference (0–10V) via EtherCAT Frequency inverter reference signal Proportional valve control Industrial sensor data acquisition Compatible with CODESYS SoftMotion, Beckhoff TwinCAT 2/3, LinuxCNC + EtherCAT HAL, and SOEM. Here's a quick demo video showing it running under CODESYS: 👉 https://www.youtube.com/watch?v=bUuo9reK29s ESI file, PDF manual and AutoCAD drawings available. Available on Tindie: https://www.tindie.com/products/emresensoy/ethercat-digan-io/ Happy to answer any technical questions!
Last updated: 2026-06-13

Post by timvh on CPU + EtherCAT redundancy ^{CODESYS Forge talk (Post)}
It works well with two Wago 750-8210's. I helped a few customers setting this up. But it should work with any device which can control EtherCAT I/O, is real-time and has sufficient network interfaces. Two network adapters can be used to create a redundant EtherCAT network (you need 2 additional switches for this). The other network adapters can be used to interconnect the 2 PLC's (synchronization). We noticed that if you exchange variable lists that there could be some issues if you have long lists. So what we did is use a SoftPLC on a server that contains all the settings which continuously sends network packages (GVL sender) and which is received by both PLC's (network receiver). Switching over is done in milliseconds. The bus doesn't notice the change-over. EtherCAT communication works flawlessly.
Last updated: 2026-01-30

Post by konstantin on CAM Motion Recover after STO ^{CODESYS Forge talk (Post)}
Hello, one of the projects I work on is about a racetrack collator with two independent belts on it - two different servo motors. Both motors share the same mechanical frame and there is a train on a belt that collects items from the input conveyor. The way the motion is performed is the following - there is a virutal master axis and both real axis are synchronised with different cam motion profiles. The problem is when an STO is triggered on any of the slave axis, the synchronization process starts from position 0 of the slaves. How can I force the slaves to retain their current position until the master passes their position? Then the slaves should catch up with the master according to the profile, the slaves should not start synchronization from 0 position. Best Regards Konstantin Kolev
Last updated: 2026-02-12

Post by gseidel on CAM Motion Recover after STO ^{CODESYS Forge talk (Post)}
Dear Mr. Kolev, I'm not sure I understood correctly. But this is my take on your question: When the STO of the slave is triggered, store the current master position (e.g. 225 units) After the reset of the slave error, call MC_SetPosition on the virtual master and reset it to the stored position (225 units) Optionally, before MC_CamIn is restartet, move the slave back to the slave position corresponding to the stored master position. (If you do this, no ramping in will be necessary) Restart MC_CamIn, with absolute master position and absolute slave position. Choose the StartMode that is appropriate for your machine. Best regards, Georg Seidel
Last updated: 2026-02-16

Post by hannibal on Codesys Trend - setting Y axis minimum and maximum as variables - error ^{CODESYS Forge talk (Post)}
I am experiencing an issue when trying to define the Y-axis limits in a Trend Graphic using variables. When I set the Minimum and Maximum values as variables, an error is triggered. My goal is to make the Y-axis limits dynamic so they can adjust according to the installation. Both variables are initialized as follows: gP_YMin = -100.0 gP_YMax = 100.0 However, I still get the following error: "The minimum axis value must be less than the maximum axis value" Does anyone have an idea why this is happening or how to resolve it?
Last updated: 2026-03-22

Post by hannibal on Codesys Trend - setting Y axis minimum and maximum as variables - error ^{CODESYS Forge talk (Post)}
I am experiencing an issue when trying to define the Y-axis limits in a Trend Graphic using variables. When I set the Minimum and Maximum values as variables, an error is triggered. My goal is to make the Y-axis limits dynamic so they can adjust according to the installation. Both variables are initialized as follows: gP_YMin = -100.0 gP_YMax = 100.0 However, I still get the following error: "The minimum axis value must be less than the maximum axis value" Does anyone have an idea why this is happening or how to resolve it?
Last updated: 2026-03-22

Post by poliautomacao on Absolute movement controlled by an external encoder. ^{CODESYS Forge talk (Post)}
Hello, I made this configuration, I'm moving the encoder value to SM_Driver_PosControl.in.wActPosition. When I make the absolute movement of my PosControl axis, my physical drive axis rotates perfectly, but I noticed that the movement is not followed by the encoder. That is, if I hold the encoder and keep it in position 0, the PosControl axis makes the absolute movement of 314 mm and stops, which is strange because the encoder is at 0. Theoretically, the PosControl axis should accelerate to try to compensate for the movement error. I haven't yet achieved perfect functionality.
Last updated: 2026-03-24

Post by cvrettacos-dse on How to reset scroll of a table element ^{CODESYS Forge talk (Post)}
Hello, I would like to use swipe/pan gestures to scroll a table visualization element (CODESYS 3.5.21.10) ona DSE M810 display. The swipe / pan gesture control works fine, however, I cannot figure out how to reset / navigate to the top of the table again with code. I have tried the Scrolling begin variable, and the visu manager is setting it to FALSE right away but the table doesn't actually scroll back to top. If I check the “Scroll elements with scrollbar” box, then the Scrolling begin variable works perfectly, but now the swipe/pan scrolling no longer works and you have to use the scrollbar. Any assitence you can provide is appreciated. Thanks.
Last updated: 2026-04-21

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