Post by hafizapik99 on Webvisu not showing Codesys V3.5 SP13 Patch 2. ^{CODESYS Forge talk (Post)}
Hello, I am using a Hitachi Micro EHV+ for a small project, and I wanted to have a Web visu, done with Codesys V3.5 SP13 Patch 2. I test the Visu screen and it works well in Codesys, but I get a blank page when i enter the web visu in a browser. Here is the setting under web visualization: Update rate (ms): 5000 Default communication size: 100000 Under Visu_Task tab: Priority: 3 The Visu_Task interval is set to 2500ms I'm using Google chrome with the latest update, the Javascript is enabled with HTML5. Any advice?
Last updated: 2024-04-06

Post by valenting on Can't use new licensing with Raspberry Pi ^{CODESYS Forge talk (Post)}
Hi, I'm using Codesys control for Raspberry Pi in the latest version (4.11.0.0) When I try to install a license with the new application-based licensing, I have an error "returncode 403046401" (using codesys SP18) I updated to codesys SP20, and now I get the following error: "The selected conainer [0]: SN=..., Version=1.18, Chip=0, Rev=0 does not fit to your ticket. Please select a suitable one." The license I'm trying to install is a Codesys Control Basic L license, with a Codesys Visualization L option, according to the needs of my application. What can I do to activate my license ?
Last updated: 2024-04-22

Post by julianramirez on Visu 4.9.1 auto-logon/login ^{CODESYS Forge talk (Post)}
Hello everyone, I have been trying to test the auto-login feature that is advertised on the Release Notes since Visu 4.8: *Version: 4.8.0.0 Besides some bug fixes and improvements this version contains the following new functionality: Alarmmanagement: Possibility to raise alarms programmatically Use real time clock of IEC context Automatic login for WebVisu using Chrome "Sign in automatically"* I am using a personalized login Visualization, the User Management works, however, when ticking the checkbox that keeps the credentials stored, after I reload the page I still see that the user and password details are not filled in. I tried with the default Login Visu (Blue one), and still see the same behavior - VisuUserManagement.VUM_LoginVisualization - I've tried with Chrome and Edge. Thanks for your help
Last updated: 2026-01-12

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 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 wistaro on Hardware compatibility with Linux RealTime PLC ^{CODESYS Forge talk (Post)}
Hello, I am currently using Codesys Control RTE Softmotion V3 to control my servo-drives in CAN, EtherCAT and PROFINET IRT. I am using a PC with Windows 10 with the following boards: - PEAK-CAN PCIe board (for CAN and Softmotion); - Hilscher CifX with firmware 3.X and SysDrv3s driver (for PROFINET IRT); - Realteak standard NIC (for EtherCAT). I would like to switch to Linux (Debian), because this computer is old, slow, and outdated (Windows 11 is far from being compatible with this computer). Before doing this, I would like to be sure of the compatility between my 3 boards and Codesys Control Linux SL. Otherwize, I will stay on Windows 10 and use it in an isolated environnement. Thanks for your advices. Regards,
Last updated: 2026-06-15

Post by mattkaree on Mapping values with etherCAT mailbox communication ^{CODESYS Forge talk (Post)}
I am using a WAGO PFC200 PLC as an etherCAT master and a Keyence IV3-G120 with DL-EC1A attached as an etherCAT slave. I am using CODESYS V3.5 SP21 Patch 3. I was able to set up mailbox communication and can see values changing accordingly, but I want to know how I can map these values and reference them in my program. I am able to map the process data objects in the 'EtherCAT I/O Mapping' tab, but there is no where to map the mailbox values in the 'CoE Online' tab. Is there a way I can reference one of these values in my code?
Last updated: 2026-01-27

Post by msegon on Send HTML body with Mail Service SL ^{CODESYS Forge talk (Post)}
I'm trying to send a mail using Mail service SL. I would like the body to be in HTML format for a nicer look. Which I managed to do, but only if I don't send an attachment. Can someone help me with the settings on how to send an HTML body and attachment? I used the Mail Service SL Example project, the only thing I added in the "Main_PRG" code in line 51 under "SendMailFB" is "mimeType := 1". I'm using Library: Mail Service SL Library Documentation Company: CODESYS Title: Mail Service SL Version: 1.13.0.0 Categories: Application|Utils Namespace: MAIL Author: CODESYS Development GmbH Placeholder: Mail_Service_SL
Last updated: 2026-04-14

Post by dtamm on How to read string from CharBufferPtr? ^{CODESYS Forge talk (Post)}
I am trying to implement a mechanism to send alarm SMS. For this, I have created an Alarm Class with a Notification Action which calls a POU. This POU implements IAlarmNotifiable making it selectable in the Alarm Class configuration. IAlarmNotifiable has an Execute method which is called by the alarm class. Now, I want to extract the alarm message of the triggered alarm. The Execute method comes with a VAR_INPUT itfAlarm: AlarmManager.IAlarm which supplies a method called GetMessage. The help text says: Returns the message text, that has been configured for the alarm. The result is a pointer to the buffer, where the message text is stored The type of the result is CharBufferPtr, and at some place I read that it can be interpreted as a pointer to string. But I cannot manage to extract the alarm message, all I get are numbers. I have tried the following: psAlarmText := itfAlarm.GetMessage(__SYSTEM.TYPE_CLASS.TYPE_STRING)^; sAlarmText := TO_STRING( itfAlarm.GetMessage(__SYSTEM.TYPE_CLASS.TYPE_STRING)^ ); So how do I get access to the alarm message as clear text? (In this case, "Larm 1")
Last updated: 2024-02-21

Post by martinlithlith on Device User Logon and No device is responding.. Pi4b codesys 3.5 SP19 2 + (64-bit) ^{CODESYS Forge talk (Post)}
Hi, Thank you for your reply! What should be the version 4.9.0.0? I have a user named pi on the pi, thats what i´m using as credientials to be able to for example update/install runtime. Or do i need another user? once agin, thank for the reply! Martin
Last updated: 2023-09-11

Post by snhatton on Retain memory change to ZERO ^{CODESYS Forge talk (Post)}
I think more information is needed to help solve the issue. Can you list the exact steps to reproduce the issue? What version of Codesys are you using? Did you add a persistentVars object to your project? I would recommend browsing all instances of the retain variable to see all possible writes to the variable in question.
Last updated: 2023-09-18

Post by manuknecht on Detect "Cancel" Press in FileOpenSave Dialog ^{CODESYS Forge talk (Post)}
Thanks for your response! It seems like the VisuElems library has updated functions to the ones you used but apparently these older ones still work, even if I couldn't find them in the library documentation and they are also not suggested automatically by Codesys (when using Ctrl + Space). However, its precisely what I was looking for and it works. Thanks!
Last updated: 2023-09-20

Post by transmin01 on SafetyApp - "Invalid ERR Ack input" ^{CODESYS Forge talk (Post)}
Hi, I am trying to get a basic safety application to download but I keep getting an "Invalid ERR Ack input" and "The Standard Inputs Size of zero is not allowed". I am simply using 2 safety inputs through an "AND" block to 2 safety outputs. Any help would be appreciated. Regards Trevor.
Last updated: 2023-09-27

Post by transmin01 on SafetyApp - "Invalid ERR Ack input" ^{CODESYS Forge talk (Post)}
Hi, I am trying to get a basic safety application to download but I keep getting an "Invalid ERR Ack input" and "The Standard Inputs Size of zero is not allowed". I am simply using 2 safety inputs through an "AND" block to 2 safety outputs. Any help would be appreciated. Regards Trevor.
Last updated: 2023-09-27

Post by transmin01 on SafetyApp - Exchange 8 bits from EtherCAT Safety Module to PLC mapping issue ^{CODESYS Forge talk (Post)}
Hi, I am using an "Exchange 8 bits from EtherCAT Safety Module to PLC" module which allows me to create tags in the safety environment, but how does this map to the standard PLC program? There is no entry in the IoConfig_Globals variables list. Regards Trevor
Last updated: 2023-09-27

Post by sivakov on CoDeSys Exception EIP Adapter ^{CODESYS Forge talk (Post)}
Hi, Got same problem, appeared after 4.3.1.0 update. Prabably problem is in performance. I am using virtual machine, so adding one more core and several GB to RAM still not solved, but atleast did system more stable. Try optimise your main program or set less task interval. Regards, I will be your mate in solving this mistery =)
Last updated: 2023-09-28

Post by jvfred on Display problems on Weintek's cMT3092x HMI ^{CODESYS Forge talk (Post)}
Hello, I have the same issue with my cMT display. I know it's a communications issue with my Eurotherm E+PLC400 PLC using the Codesys V3 driver. Were you ever able to figure out what the problem was and if so, what was your fix. Any help would be greatly appreciated.
Last updated: 2023-12-01

Post by mucleus on What is the solution for "Application stopped on recovery switch request"? ^{CODESYS Forge talk (Post)}
Hi, everyone. I am using CODESYS RTE and Profinet I/O or EtherCAT I/O. Occasionally (once every 1-2 months) the attached image occurs and the program stops. I want to know why this phenomenon occurs and how to solve it. I attached log. Please help me. Thanks.
Last updated: 2024-07-05

Post by hermsen on Raspberry Pi 4.12.0.0 SL also stops after 15s ^{CODESYS Forge talk (Post)}
After installing this new 4.12.0.0 SL version on my RPi5 8GB and the latest bootloader, the runtime disappeared after 15secs. The bootloader my pi uses is from 2024-06-11. I was able to resolve this issue using this post: https://forge.codesys.com/forge/talk/Runtime/thread/be25c0ff66/ The workaround works for me.
Last updated: 2024-07-06

Post by nltheves on Raspberry PI4 Serial Port ^{CODESYS Forge talk (Post)}
Hi Ricardo. I was having the same problem with Codesys and a Raspberry Pi 2W while using the GPIO uart. Your post helped me a lot. Thanks! But could not understand why MODBUS parity bit makes Codesys MODBUS COM driver stopping to work after first request transmission. Did you see this @eschwellinger ? Regards, Nelson
Last updated: 2024-07-18

Post by mmpl on Array to String ^{CODESYS Forge talk (Post)}
I would like to create one large JSON string from an array of objects, where each object contains a value. My current approach involves using a for loop and string concatenation, but with 20,000 elements in the array, this method takes almost 7 seconds and negatively affects the PLC scan time. Is there a more efficient way to accomplish this?
Last updated: 2024-07-18

Post by mmpl on Array to String ^{CODESYS Forge talk (Post)}
I would like to create one large JSON string from an array of objects, where each object contains a value. My current approach involves using a for loop and string concatenation, but with 20,000 elements in the array, this method takes almost 7 seconds and negatively affects the PLC scan time. Is there a more efficient way to accomplish this?
Last updated: 2024-07-18

Post by gepert on parker servo and position ^{CODESYS Forge talk (Post)}
Hello, I using codesys motion with Parker servo (without brake). In my application i use mc_moverelative. When i send new position motor moves. But when it arrives to the point it stops and does not hold the position. It means that i can easily move shaft by hand Should i somewere turn it on so motor keep position by torque (current)? Best regards Lukasz
Last updated: 2024-08-04

Post by oymyakon on Modbus Lockup ^{CODESYS Forge talk (Post)}
Hi i have a project where i am communicating with many modbus devices using TCP to serial. This is all working extremely well except when i turn one of the remote devices off. If i leave the auto reconnect on it still doesn't talk to the rmianing devices and if i turn Auto reconnect off it locks up. Any help would be appreciated. Paul.
Last updated: 2024-08-07

Post by oymyakon on Modbus Lockup ^{CODESYS Forge talk (Post)}
Hi i have a project where i am communicating with many modbus devices using TCP to serial. This is all working extremely well except when i turn one of the remote devices off. If i leave the auto reconnect on it still doesn't talk to the rmianing devices and if i turn Auto reconnect off it locks up. Any help would be appreciated. Paul.
Last updated: 2024-08-07

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