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 matt-purcell on Which Lib to use, connect to a socket with URL instead of IP address ^{CODESYS Forge talk (Post)}
Hello, I have a new project and I need to connect to a TCP socket using the URL instead of an explicit IP address, myendpoint@mydomain.com Which library is best suited for this? This is for a new enterprise project, the endpoint is a server in a datacenter running some real time application. We have big IP, it will automatically reassign the IP address to the backup server if a crash occurs so an explicit IP won't work for me. I've done this in RS logix, working now to migrate that code over to codesys. Thanks in advance!
Last updated: 2024-06-17

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 alimans on Unrecoverable SoftMotion state after switch to PreOp ^{CODESYS Forge talk (Post)}
For anyone still experiencing this issue, here’s how I managed to solve it: Symptoms: 1. Sometimes, on the first start of CODESYS Runtime, the modules fail to run. 2. After disconnecting and reconnecting the communication cable, the drive does not start again. 3. MC_Reset cannot clear the fault. Solution (what worked for me): 1. Check the axis communication using the SMC_CheckAxisCommunication function block (FB). 2. If CheckAxisCommunication.eComState of the axis is equal to or higher than SMC_CommunicationState.SMC_COMSTATE_BASE_COM_INITIALIZATION, then 3. Use the SMC3_ReinitDrive function block to reset the drive — and it works. For more information, refer to the official CODESYS documentation: 👉 https://content.helpme-codesys.com/en/libs/SM3_Basic/Current/SM3_Basic/DriveInterface/AXIS_REF/SMC3_ReinitDrive.html
Last updated: 2025-10-23

Post by daanyouknow on Using a raspberry pi and NVLs to log variables outside of Codesys ^{CODESYS Forge talk (Post)}
Hi, My PLC/controller doesn't support OPC UA, so my current plan to create a ringbuffer/circular logger is to connect a raspberry pi to it, use the Network Variable List receiver and sender and raspberry pi codesys runtime to get the variables to the raspberry pi, after which I will use the pi which DOES support OPC UA to get the variables to a python program which logs the desired variables for a certain amount of time for me, would this work? I don't want to spend 50+ euros + licencing fees for a solution that might not work.
Last updated: 2025-11-14

Post by jonasz on Deploy LicenseServer for Linux SL ^{CODESYS Forge talk (Post)}
The machine I'm currently using (Celeron J1900) already has the Kernel RT patch. I checked the performance according to the documentation. After running CyclicTest for 4 cores, the value for each core is around 6-7. I went through the entire process according to the documentation (I envy the TaskMonitor results in the documentation). The documentation states: "CODESYS Virtual Safe Time Provider The CODESYS Virtual Safe Time Provider is a standard interface that the user can use to transfer a second and external time base to the CODESYS Virtual Safe Control. The implementation is done as a client, which must run on another system with an independent time base." How do I implement this? I've been struggling for two weeks now - I'm too old to give up.
Last updated: 2025-11-17

Post by imdatatas on Error: C0138: No matching 'FB_Init' method found for instantiation of VisuClientObjectMgr ^{CODESYS Forge talk (Post)}
Unfortunately, the "C0138: No matching 'FB_Init" method found" error is a nightmare for CODESYS V3.5 SP21. I'm not sure if anything has been done about this or if anything will be fixed. I've encountered the same issue many times, and it was only resolved by completely uninstalling SP21, deleting all related files and folders from my computer, and then installing SP19. So, I've given up on using SP21 and switched back to SP19patch7. Here are some previous posts regarding the "C0138: No matching 'FB_Init" on SP21 of Codesys. https://forge.codesys.com/forge/talk/Visualization/thread/0763d6ca8e/ https://forge.codesys.com/forge/talk/Motion/thread/9074005bf4/
Last updated: 2025-11-28

Post by pernockham on Unable to deploy "Control for Linux SL 4.18.0.0" ^{CODESYS Forge talk (Post)}
The option to update "Control for Linux SL" is not shown in the "deploy control SL tool", I can see and update the gateway but not the control (3.5.21 SP4). Has the way to update control SL changed? In the process of fault finding I removed the control SL entirely from my target, then I had to revert to version 3.5.21.0 SP 1 to re-install "Control SL 4.17.0.0". So I thought it was just a matter of using SP1 to update also to 4.18.0.0, but after installing the files for 4.18.0.0 in the SP1-version, the behavior was identical to SP4, ie no Control for Linux SL shown in the deploy tool.. See screenshots.
Last updated: 2025-12-19

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 darwin03 on Mismatch between coordinate monitor and actual motion using SMC_GroupJog2, MC_MoveLinearAbsolute (6DOF) ^{CODESYS Forge talk (Post)}
Dear Georg, Thank you for your explanation about the axis scaling. I checked the scaling of Joint6 and corrected it so that one technical unit equals one angular degree. However, I am now facing another issue. When I move all axes to zero position and then try to use SMC_GroupJog2 and MC_MoveLinearAbsolute, I receive the error SMC_CP_CONFIGS_DIFFER I already tried moving each joint manually to different positions before executing the motion command, but the error still appears. Could you please explain: What exactly causes SMC_CP_CONFIGS_DIFFER Thank you very much for your support. Best regards, darwin03
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 alex-n on Problem with keeping up the distance between two axes ^{CODESYS Forge talk (Post)}
Hello. I have a task to synchronize the movement of two axes and maintain the distance between them. First axe makes equal steps by trigger using MC_MoveRelative function. The second one is standstill and after another signal should catch up the first one from its position to a specified distance and keep it. I've tried to use MC_Phasing and mostly it works. Second axe catches up the first and starts make step with it. But in one moment this axe can crash into the first and there is no clear connection as to why this is happening. It can work correct for a day or for a week.
Last updated: 2 days ago

Post by pernockham on Gateway in China - "Gateway not connected" ^{CODESYS Forge talk (Post)}
I think I understand my problem. They are most probably related to configuration of the network. When I use DHCP for the unit to my router it all works. However when using static IP I have not managed to reach functioning state. Trying to replicate the situation on my desk. Having a static IP on the "debian host" and a connection to my computer which then routes traffic on to internet. I have entered settings for gateway and netmask. I can ping from my "debian plc host" to internet and also do "curl google.com" so traffic seems to find its way through and back, still "Automation server" will not find the gateway. Any hints how a manual configuration should be done? Is it possibly a "firewall" issue of my "normal router"? Thanks for any help! Per
Last updated: 2026-01-27

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 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 thierry-b on CODESYS device discovery performance in large networks (/16) ^{CODESYS Forge talk (Post)}
Hello, We are using CODESYS 3.5 SP19.70 in an educational environment with several WAGO PFC200 controllers (CODESYS Runtime). Our campus network is currently configured as a /16, which creates a very large broadcast domain. We observe slow device discovery and long scan times when opening the network view. Before restructuring our architecture, we would like to know the recommended network practices for CODESYS: Recommended broadcast domain size for device discovery Possible impact of large networks (/16) on scan performance Usual recommendations (VLANs, /24 segmentation, etc.) Known limitations or points of attention in extended networks Any guidance or official recommendations would be very helpful. Thank you.
Last updated: 2026-03-29

Post by jorenbeyl on library inside library ^{CODESYS Forge talk (Post)}
I am currently developing a library that contains real‑time data. To handle this real‑time data, I am using additional libraries called SysTime and SysTypes Interfaces. When I compile my library on its own, no errors occur. However, when I use this library in a project and compile the project, I get an error indicating that the SysTime data type is not recognized. This happens even though the SysTime library is visible as a dependency under my library. Does anyone know how to correctly include a library within another library so that the project recognizes the sub‑library without causing compilation errors?
Last updated: 2026-04-23

Post by jroddball79 on PM556-TP-ETH — How to change IP address without overwriting the PLC program? ^{CODESYS Forge talk (Post)}
We have checked open ports. SSH (22) and HTTP (80) are not reachable. The only open ports are: 502 (Modbus TCP — used for lighting control) 1200 (CODESYS runtime) 1201 (CODESYS runtime) We can connect via Automation Builder using the current IP, but we don't have the original project source — only an empty project. This is why we are afraid of doing a full download, as it would overwrite the running application. Is there any way to change the IP through the CODESYS runtime protocol on ports 1200/1201 without affecting the running program?"
Last updated: 2026-05-20

Post by baotthitawat on Cloud SCADA for Industrial Energy Monitoring ^{CODESYS Forge talk (Post)}
Recently I’ve been exploring ATSCADA iEnergy Tools for SCADA-based energy monitoring systems. One thing I find interesting is how modern SCADA platforms are evolving beyond traditional machine monitoring. Many industrial systems are now using Cloud SCADA architectures for centralized energy management, remote dashboards, and operational analytics. ATSCADA iEnergy Tools supports: Real-time energy monitoring Historical data logging MySQL integration Reporting and Excel export Remote SCADA dashboards Cloud-based monitoring systems I think this type of solution is practical for factories, power monitoring applications, building management systems, and other industrial automation projects where energy optimization is becoming increasingly important. Industrial automation is clearly moving toward web-based and cloud-connected SCADA platforms, especially as more facilities focus on digital transformation and smarter energy management
Last updated: 4 days ago

Post by baotthitawat on Cloud SCADA for Industrial Energy Monitoring ^{CODESYS Forge talk (Post)}
Recently I’ve been exploring ATSCADA iEnergy Tools for SCADA-based energy monitoring systems. One thing I find interesting is how modern SCADA platforms are evolving beyond traditional machine monitoring. Many industrial systems are now using Cloud SCADA architectures for centralized energy management, remote dashboards, and operational analytics. ATSCADA iEnergy Tools supports: Real-time energy monitoring Historical data logging MySQL integration Reporting and Excel export Remote SCADA dashboards Cloud-based monitoring systems I think this type of solution is practical for factories, power monitoring applications, building management systems, and other industrial automation projects where energy optimization is becoming increasingly important. Industrial automation is clearly moving toward web-based and cloud-connected SCADA platforms, especially as more facilities focus on digital transformation and smarter energy management
Last updated: 4 days ago

Post by arundara on Variable Sync Issue In Soft Plc Redundancy ^{CODESYS Forge talk (Post)}
Hello, I was trying to create a redundancy POC for our application where we read data from few modbus tcp devices. As there is a limitaion that modbus tcp device support only for single master device, we wanted to test how the variable sync happens in redundancy mode. For that i have used the redundancy sample code added a variable "b" under a condition. What i observed was while active controller is running, if passive controller is powerup, passive controller is able to sync all the data configured for redundacny. But after that the variable data which resided under a condition is not synching from active to passive controller. I have attached the image where i have highlighter the variable. Can some help me to understand how redundacny work in codesys soft plc and if there is a solution to sync variable which are under condition, please explain the same or suggestion to achieve the same. Hardware - Raspberry Pi (2 qty) Redundancy licence used - yes in both controllers. Codesys runtime - 4.9.0.0 Codesys software version - V3.5 SP19 if i have posted this question in wrong section, please do let me know in whcih section i have to post this question.
Last updated: 2023-12-01

Post by ofey on Testing of Codesys program ^{CODESYS Forge talk (Post)}
Hi! I thought to hear what you guys think is the best way to test the program in my scenario. I have some PLC programs that have been made and deployed on different PLC's. The program has added the specific devices and IO that is applicable. I have made a test environment for everything outside of the PLC, ie. the same SCADA system that is talking to the PLC, and a program running locally is simulating the plant (level regulation of different tanks). Pr. now I have had to manually change the variables that are reading/writing values from the IO so they read/write via OPC instead. I also have to change the device tree from the specific PLC rack, to the soft PLC. So I kind of end up with two different programs that I have to maintain. I was just wondering if you believe there is an easier way to do this. So I can have the exactly same program and kind of switch between the soft mode, and the "real" mode.
Last updated: 2023-12-07

Post by wbj0t on What the right way to update TCP/COM slave device holding registers ^{CODESYS Forge talk (Post)}
Hi all :) I have an plc. This plc has option to be as slave device. There are TCP -> Serial Slave Device and COM -> Serial Slave Device. There are 4096 ModBus holding registers with mark "internal modify" for the both devices above. So, COM Slave has 4096 registers and TCP Slave has 4096 registers. And, finally, I have an ARRAY[0..4095] OF WORD. This array glued with COM Slave and TCP slave. Yes, I need plc's opportunity to be communication both TCP and COM ways for the same registers. For example, the next task structure: * TASK_0: 1. pou_READ_Registers 2. pou_0 3. pou_1 4. ... 5. pou_N 6. pou_WRITE_Registers At the first pou I read registers for the other pous, after job we have sort of state of the plc. At the last pou (6) we write modified registers. It is a good scenario: some one wrote registers for the job, after job we save these (modified) registers. But, what if registers wrote between 1 and 6 pou by operator, for example, at the 3 pou -> the last pou 'pou_WRITE' will rewrite this request from operator. What the right way to work with this logic? Thanks you.
Last updated: 2024-07-01

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