Post by fugtwad on Automation Builder V2.5 EtherCAT CM579 Master Scan for devices - >No gateway selected ^{CODESYS Forge talk (Post)}
ABB Automation Builder v2.5.0.22 Premium CodeSys 2.3.9.62 Running on Win 10 VM x64 Goal: I have an EtherCAT topology issue which normally a "Scan for devices.." on the EtherCAT master would shed some light on. Issue: Upon trying such I get a "No gateway selected" error. Question: How might I point the the "scanner" at a gateway? What is working: Gateway is running in system tray. I can go online to PLC. A scan from the "Diagnostics live" tab of the EtherCAT master gives slave status. What I have tried: Restarting gateway in system tray. Exiting system tray gateway and reloading it. Turning off firewall. Contacting ABB support multiple times. Any help appreciated.
Last updated: 2024-05-20

Post by wbj0t on connect IDE to plc that uses modem ppp ^{CODESYS Forge talk (Post)}
Hello everyone! I have an PLC device that uses modem ppp connection to the internet with white IP. Device PPP connection with modem operator established, so I can connect to this device via SSH also within Codesys IDE (check version, info, etc...) BUT, I cant establish connection to this device in the device gateway options for application upload and debugging. How can I do this? Im trying set my device remote IP and port 11740, but, as I understand, it is wrong decision, because the next logic in this connection: local W10 service (Codesys Gateway) listen on 1217, then (some how) this service scanning local networks for seeking any local IP which listening on port 11740, and then connects and writes there. OR IM WRONG?:) W10 tool 'Test-NetConnection' with parameters 'ip -Port 11740' succeeded with True. Need some help, please :)
Last updated: 2024-05-21

Post by lzml on Safety ^{CODESYS Forge talk (Post)}
I have a problem with a project that uses EtherCAT Safety. The project is developed with CODESYS version 3.5.19.20, runtime 3.5.18.30, safety CPU EL6900 4.3.1.0, TCEL6900FBS 3.5.1.10, IODrvEL6900 4.3.1.0, IODrvEtherCAT 4.1.0.0. The safety project works correctly, but when I download the PLC project for modifications, the ESM objects are no longer aligned with the states inside the safety program. Specifically, inside the safety program, they are seen as true, while outside the safety program, the state is reported as false, but not for all ESMs, only some. I have already tried to completely redo the safety from scratch, but nothing has changed. Any solutions? Thanks
Last updated: 2024-05-24

Post by jaspergain on Non-existing identifiers ^{CODESYS Forge talk (Post)}
Hello, I got a bit of a weird issue going on which is kind of annoying. So recently we switched a lot of Modbus IO to EtherCAT, as we were having issues with stability. All works fine, which is great. But sometimes when I change the program I get errors claiming that identifiers are not defined. Meaning I can't go online. See the picture below. I believe this is because some of these identifiers were used with Modbus, and they weren't properly removed/deleted? A clean all temporary fixes the issue, but it comes back again after a while of changing the code, and building. Any way to fix these non-existing required identifiers, or even find out where they are required? Thanks for the help in advance. Jasper.
Last updated: 2024-05-29

Post by viksym on Get text from textlist ^{CODESYS Forge talk (Post)}
Does anybody know how to get a specific text from a text list within a program. Obviously it works in a visualization, but because I will have an HMI that has it's own system and I will have to send variables to this HMI via an OPC UA connection, I need to be able to get a text into a string. I tried using the VisuElems like this, but it only returns an empty "" and nothing else. IF trig THEN sText := VisuElems.cmpDynamictext.DynamicTextGetDefaultText(ADR(sTextList), ADR(sAlarmID))^; //sText := VisuElems.cmpDynamictext.DynamicTextGetText(ADR(sTextList), ADR(sAlarmID))^; trig := FALSE; END_IF Any help and idea is highly appreciated because I am getting desperate here.
Last updated: 2024-05-31

Post by adaffern on Runtime on Raspberry pi5 stops after 15 seconds ^{CODESYS Forge talk (Post)}
Hi Guys, I'm new to CODESYS on the pi and I'm struggling to get it working. My issue is that the runtime keeps stopping after approximately 15 seconds. I have installed the runtime package 4.11.0.0 on the pi, trying on both a 64 bit and 32 bit OS. Looking at old forums it all references the 4B and the fact they used 32 bit Debian bullseye (the last version of raspberry pi os) however the pi 5 doesn't offer this version when I try select it in the imager. Has anyone managed to get running using the pi 5? Any help would be greatly appreciated. Thanks, Adam
Last updated: 2024-06-10

Post by timothyzalusky on Strange Behavior on Raspberry Pi ^{CODESYS Forge talk (Post)}
Hello, I am seeing some weird runtime behavior related to the EQ function on a rapsberry pi based system. I have attached a screenshot showing the strange latching I am seeing on the EQ function, and I have not seen this behavior before. I tried freshly restarting the runtime and it has this same behavior. Anyone seen this? I am on 3.5.20 with the latest runtime installed. Basically, as soon as it hits one of those EQ's in the program, it latches effectively locking the output on. Any input from the Codesys team would be appreciated as well as anyone that might know what I am seeing.
Last updated: 2024-06-18

Post by kuegerls on SysProcessExecuteCommand2 and CANopen Device ^{CODESYS Forge talk (Post)}
Hello, CODESYS Control is running on my RevPi, and my system communicates over a CANbus with a master using the ConnectCan module (Slave - CANopen Device). The communication works perfectly fine so far. However, as soon as I call a Python script with "SysProcessExecuteCommand2" that creates a CSV file and executes without errors, the master does not adopt any changes to the Transmission Process Data Objects (TPDOs). I don't quite understand what one has to do with the other, and perhaps someone can help me with this. Here is my script call: SysProcess.SysProcessExecuteCommand2(pszCommand:='python /home/pi/test.py', pszStdOut:=sCMDOutput, udiStdOutLen:= SIZEOF(sCMDOutput), pResult := ADR(eResult)); Thank you in advance! Best regards, Stefan
Last updated: 2024-06-20

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 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 aria13 on Has anyone fed ESP32 sensor data into CODESYS (via MQTT/Modbus)? ^{CODESYS Forge talk (Post)}
Has anyone tried sending live sensor data from an ESP32 into a CODESYS runtime (for example via MQTT gateway or a Modbus bridge) to trigger PLC logic? I was reading an ESP32 → MQTT tutorial (https://www.theengineeringprojects.com/2021/11/esp32-mqtt.html) that shows how easy it is to publish sensor data from an ESP32, and I’m wondering how practical that is when tying the stream into industrial control software like CODESYS. I’ve also seen Arduino forum threads where people relay sensor streams to MQTT brokers and Raspberry Pi projects that bridge MQTT→Modbus, so I’m mainly curious about real-world issues: reliability, message latency, and simple patterns you’d recommend for safe PLC integration. Any tips, examples, or gotchas from folks who’ve done this?
Last updated: 2025-10-29

Post by mait-tim on Drive communication errors ^{CODESYS Forge talk (Post)}
With a machine I'm working with i get a communication error when I'm updating some softstop limits. As soon as I update the code the drives do not want to operate. Using the MC_readStatus I'm receiving errors as soon as i want to start a movement. Using MC_ReadAxisError i see that i receive error 131, no response. With a SMC3_ETC_ReadParameter_CoE i do not recieve any driver errors. Does anyone know how i can figure out what the error is and how to solve it. When i go back to the old software no errors occur. Im working with a legacy machine running a Beijer PLC with some Mitsubishi drives. running on Codesys 3.5 SP10. the runtime version is probably 3.5.3. The drives are all Ethercat Drives (CoE). All using the SM3_drive_ETC libary and the SM3_basic library.
Last updated: 2025-12-22

Post by ranadheer on Assistance for MQTT configure with external broker (Mosquitto) ^{CODESYS Forge talk (Post)}
Hi everyone Am trying to make establish MQTT connection , where am using IIOT example for this as a demo mode. where i had given IP-address of of local Linux application as a 172.31.239.67 and port number as 1883 in the PLC_PRG itself, and preparing the publish message by manually as " this is from published message", and this should receive at the subscriber side. Aim: To make communicate external publisher to the CODESYS by using MQTT protocol. By any chance having reference documents about this implementation please share here. and suggest the process to make it possible. I had uploaded reference project file after updating address in th PLG_PRG, kindly assist to configure with the broker
Last updated: 2025-12-03

Post by mawaloc on KeyPad Function in Visualization to fill a table ^{CODESYS Forge talk (Post)}
Hello Everybody, Hope you're all doing good for this new year. Since a time, I'm looking on how to use the KeyPad in vizualization to fill a textlist or something similar. my application is : In one window, I would need to be able to writte a string linked to an Numeric Values. => I can't use a std text list inside my software, as per this would be custom by customer. then from another windows I would need a "text box" to be able to select any of this String. I hope it's clear enought. thankyou for the help
Last updated: 2026-01-07

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 mascara on JOG continues in WCS ( SMC_GroupJog2 ) ^{CODESYS Forge talk (Post)}
I'm using the SMC_GroupJog2 block from the SM3_Robotics library for manual movement of an AxisGroup in WCS coordinates. The observed behavior is: When pressing X+, the X-axis starts moving correctly. If I press Y+ during the movement, the block interrupts the current movement and starts a new movement in X and Y. If I release any button, all axes stop, even if another button is still pressed. Example: Pressing X+ → X moves Pressing X+ and Y+ → X stops momentarily and starts XY movement Releasing X+ while holding Y+ → all axes stop The expected behavior would be: to allow simultaneous continuous movement on multiple axes to not interrupt movement when another axis is added or removed. Is there a correct configuration of SMC_GroupJog2 to achieve this behavior, or is there another block more suitable for continuous manual jog in AxisGroup (WCS)?
Last updated: 2026-03-11

Post by egau on Importing a library overrides parameters of a referenced library ^{CODESYS Forge talk (Post)}
Hi, In my CODESYS project (ABC.project), I’m using the MQTT library. I’ve also created a separate library (DEF.library) which itself references the MQTT library. In ABC.project, I’ve customized some MQTT parameters—for example, setting g_udiMaxPublishersAndSubscribers to 100 instead of the default value of 20. However, when I import DEF.library into ABC.project, the MQTT parameters get reset to their default values. I assume this happens because DEF.library still uses the default MQTT configuration, which then overrides my project settings. A straightforward workaround would be to manually align the parameter values in DEF.library, but that doesn’t feel like the right approach. Is there a better or recommended way to handle this situation? I'm using SP18 Patch3. Any insights would be greatly appreciated. Thanks in advance!
Last updated: 2026-05-04

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 jroddball79 on PM556-TP-ETH — How to change IP address without overwriting the PLC program? ^{CODESYS Forge talk (Post)}
Still looking for a solution. I have gathered more information that might help: Device: ABB AC500 PM556-TP-ETH Firmware version: 2.4.2.14993 (dated 2014) Open ports confirmed: 502 (Modbus TCP), 1200 and 1201 (CODESYS runtime). SSH (22) and HTTP (80) are not reachable. No SD card in the PLC. I can connect via Automation Builder using the current IP and Online Login works, but I have no original source project available. Automation Builder requires a full PLC download to apply IP changes, which we want to avoid as it would overwrite the running program. Any guidance on how to change the IP without a full download would be greatly appreciated. I am also open to solutions using third party tools, DCP protocol, or scripts. Thank you
Last updated: 2026-05-22

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 afrazeh2026 on Curtis 1226BL Drive ^{CODESYS Forge talk (Post)}
Subject: Curtis 1229-4105 CANopen (CiA 301 / CiA 402) Hello everyone, I am developing a battery-powered industry vehicle using a Curtis 1229-4105 motor controller together with a Siemens S7-1200 PLC and an HMS (Ixxat) CANopen Master. I am looking for someone who has practical experience with the Curtis 1229-4105 CANopen implementation. I would appreciate your help with the following questions: Does the Curtis 1229-4105 support only CANopen CiA 301, or does it also support CiA 402? Is an EDS file available for this controller? Is the CANopen Object Dictionary available? Has anyone successfully communicated with the Curtis 1229-4105 from a Siemens S7 PLC or another CANopen master? Are the CANopen PDOs and Object Dictionary based on the standard CiA profile, or are they Curtis-specific? Any documentation, examples, or practical experience would be greatly appreciated. Thank you very much.
Last updated: 2026-07-15

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 gatto on Two licenses have to be installed forgot to enable one license ^{CODESYS Forge talk (Post)}
Sorry, I've never used Raspy. Maybe someone else can help. From personal experience, I've had license activation issues, but it was caused by my company firewall, which was blocking traffic from the Codesys license server. So I found that the license was listed as activated on the server (and therefore used and no longer activable), but it wasn't present in the PLC. I solved the problem by using an unblocked internet connection when I needed to activate the purchased license ticket. Since then, the activation process has always worked, and I've never lost any licenses.
Last updated: 2026-02-03

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

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