Post by trusty-squire on Read "Homed" status from EtherCAT drive ^{CODESYS Forge talk (Post)}
Hi, Is there a way to read the homed status from the EtherCAT drive directly? I am currently flagging the homed status on the succesful completion of the MC_Home function block, but I have had false triggers where the drive didn't actually execute the homing procedure but the MC_Home FB is marked as complete without error. I looked at other MC/SMC function blocks but the closest I can find is the "Homing" bit from MC_ReadStatus FB, but this doesn't show if the drive is succesfully homed, only that it's homing. Any guidance is welcome. Thanks!
Last updated: 2025-01-07

Post by srouse on Adding a Softmotion License to a Weintek HMI ^{CODESYS Forge talk (Post)}
I am trying to add a Softmotion license to my Weintek HMI. The HMI is already licensed for Codesys and I have already purchased a Softmotion license as well. When using the License Manager I get an error saying the licensing info is not available. I am fairly new to working with Codesys so I am at a bit of a loss and there seems very little information online about troubleshooting this specific issue. I have attached the error message below. If there are any ideas of how to troubleshoot this better I would be happy to hear them.
Last updated: 2025-01-09

Post by tmarmy1 on Redundancy for RTE x64 - stuck in standalone ^{CODESYS Forge talk (Post)}
Sorry if this has been asked before, but I can't seem to locate a thread that leads me answers. I am running two RTE x64 softPLCs, one on the host machine and a second via a VM. I have managed to finally get both to a position that they see each other, but they are in standalone mode instead of an active/passive state for failover (image attached). Every attempt to sync via the button fails. There is probably some step or option that I have missed in my bumbling through this learning process, but for the life of me I can't seem to figure it out. Anyone got any suggestions what I need to look at to get this into an active/passive redundancy state?
Last updated: 2025-02-20

Post by rshabsh on Using Latch Variable in Alarm as input from text list ^{CODESYS Forge talk (Post)}
I am currently utilizing Alarm Manager’s Latch Variable 1 to display additional information related to alarms. However, instead of mapping this latch variable to a fixed PLC variable, I would like to dynamically update its text content based on the selected language in the system. To achieve this, I am considering using a text list that corresponds to different languages rather than directly linking Latch Variable 1 to a PLC variable. This approach would allow the displayed alarm information to be automatically translated according to the active language setting. Could you please confirm if this method is feasible within the Alarm Manager configuration? Additionally, if there are specific steps or best practices to follow when implementing this functionality, I would appreciate any guidance you can provide. Looking forward to your insights.
Last updated: 2025-02-26

Post by mkintegration on Reading Absolute Encoder Position From Yasakawa Drive ^{CODESYS Forge talk (Post)}
I am looking to read in the absolute position of a yaskawa servo drive Sigma 7 that is using absolute encoder. It looks like yaskawa outputs this across there CN1 I/O connecter and during operation just outputs encoder pulses. But at boot up transmits the Multiturn data position and the Position within one rotation (pulse train) on two different wires. Once the drives are enabled it just uses incremental pulses. Does any one have experience with what IEC blocks to use to read this information in. I attached the Yaskawa Manual section that talks about the format.
Last updated: 2025-02-26

Post by mkintegration on Reading Absolute Encoder Position From Yasakawa Drive ^{CODESYS Forge talk (Post)}
I am looking to read in the absolute position of a yaskawa servo drive Sigma 7 that is using absolute encoder. It looks like yaskawa outputs this across there CN1 I/O connecter and during operation just outputs encoder pulses. But at boot up transmits the Multiturn data position and the Position within one rotation (pulse train) on two different wires. Once the drives are enabled it just uses incremental pulses. Does any one have experience with what IEC blocks to use to read this information in. I attached the Yaskawa Manual section that talks about the format.
Last updated: 2025-02-26

Post by matthew on High resolution displays with 150% scaling causes CodeSys IDE to be blurry ^{CODESYS Forge talk (Post)}
I have just upgraded my laptop which has a high res display 2560x1600 and I have to have scaling switch on at 150% but everything looks blurry and not crisp, It seems CodeSys IDE is the only software on my system to look this bad, if I switch to 100% it's crisp but way to small. From a bit of research this could be due to the use of old windows forms or something? I have found a temp workaround that sort of works but not great. You have to run CodeSys in compatibility mode and adjust the DPI settings, this works ok and the editor is clear and crisp again but the actual tool bars are small like running at 100% Anyone got any tips for running CodeSys on high res displays with scaling?
Last updated: 2025-03-03

Post by timvh on Problem Reading Registers via Modbus from non Codesys device ^{CODESYS Forge talk (Post)}
According to the documentation: https://wiki.teltonika-networks.com/view/RUT956_Modbus You need to create a Channel to read 2 registers from address 143 to get the lattitude. It doesn't specify if you need to read it as a Holding Register or as an Input Register. You could try both. So in the Teltonika router, you need to enable it as being a Modbus Server. Then in CODESYS add an Ethernet Adapter, then a Modbus Client (Master) and to the Client (Master) add the Modbus Server (Slave). Set the IP address and add the Channel. The please consider that CODESYS doesn't update any variables when they are not used in the application. In the I/O mapping tab of your I/O configuration, you can set the "Always update" to enabled.
Last updated: 2025-03-08

Post by mehakfatima on Need Help Configuring Energy Analyzers via Modbus TCP & RTU (RS-485) in CODESYS 3.5 ^{CODESYS Forge talk (Post)}
Hello everyone, I am currently working on reading data from energy analyzers using Modbus TCP and RTU (RS-485). In my previous software, I used the following method to add slave devices (i have attached the image) and configure registers: Add the Modbus slave device. Configure the communication parameters (baud rate, parity, etc.). Define the registers and their addresses for data retrieval. Now, I am trying to achieve the same in CODESYS 3.5, but I am not sure how to configure the Modbus master, add slave devices, and set up the registers properly. If anyone has experience with Modbus TCP/RTU setup in CODESYS 3.5, I would really appreciate your guidance! A step-by-step explanation or any references/tutorials would be extremely helpful.
Last updated: 2025-03-13

Post by milosfejgl on Codesys Licenses - How to reload them after updating the Raspberry Pi OS ^{CODESYS Forge talk (Post)}
We use several control units running on Raspberry Pi, programmed using Codesys software, with multiple licenses stored as soft containers. We are planning to update the SD card image of the Raspberry Pi to a newer OS version. However, we are concerned that this process might result in the loss of our soft container licenses. Is there a way to temporarily deactivate the license so that it can be reactivated on the updated system? Alternatively, what would be the best method to preserve the licenses during the update? Thank you in advance for any responses!
Last updated: 2025-03-13

Post by ameba on PersistentVars and Webvisu Element ^{CODESYS Forge talk (Post)}
hello everyone I would like to try to better understand how persistent variables work. I created some boolean variables in the PersistentVars section initialized to the value TRUE. I have tied these boolean variables to toggle switches placed inside the HMI interface pages. Once the PLC program is started, the lever selectors, if operated, change their state, at least at a graphical level, but the persistent variables do not undergo any variation. Initially the above variables were declared as simple global variables, in this case the operation with the levers was correct; I then tried to transform them into persistent ones with the aim of using them as "settings saver" Thank you for support Bye
Last updated: 2025-04-03

Post by alex2 on Error Highlighting Not Working in CODESYS v3.5 SP10 on Windows 11 ^{CODESYS Forge talk (Post)}
Hello everyone, I'm currently using CODESYS v3.5 SP10 on Windows 11, and I've noticed that syntax errors are not automatically underlined in red as they normally should be. Is there a specific setting that needs to be enabled for this feature to work? If so, could you please let me know where to find it? I’ve already tried uninstalling and reinstalling CODESYS, but that didn’t resolve the issue. Also, i have a teammate who have exactly the same computer as me and he didnt encounter any issue. Thank you in advance for your help!
Last updated: 2025-05-13

Post by abuckie on Getting raw value as full resolution for ADS1115 ^{CODESYS Forge talk (Post)}
I just found this and I am getting a value larger than 16 bit, around 81000 something. I am reading a 5 volt value and I am using level shifters for the i2c bus. This is how I have the channel configured: ADS1115.usiAddress := 16#48; ADS1115.ChannelConfigs[0].Active := TRUE; ADS1115.ChannelConfigs[0].PGA := FSR_6144mV; ADS1115.ChannelConfigs[0].InputMux := Single_0; RawAnalogValue := ADS1115.Channels[0].Value; It looks like every value is a multiple of 3. Any idea where to look to fix this? I think i found what I want to change in UpdateChannels Channels[FChannelNo].Value := INT_TO_REAL(WORD_TO_INT(LValue) * GetFullScaleRange(ChannelConfigs[FChannelNo].PGA)) / 2048.0; I try to edit it but I can't, sorry if this is a basic question, I am new to CODESYS.
Last updated: 2025-05-22

Post by milan-svarny on ModbusFB.ClientSerial Problem with Reply Timeout ^{CODESYS Forge talk (Post)}
Hi All, I have problem with ModbusFB.ClientSerial. I'm using 4 different port for Modbus communication. After some time of running program ClientSerial stops to receive data to reply buffer and all request finish with Reply Timeout. The Device sent reply correctly,that it is visible on oscilloscope and it is possible to see that data( reply )are in the device. If the usbtty device is read over external app. then it is possible to see all data which were not taken by ModbusFB.ClientSerial. The stack does not overflow or something , program runs correctly forward and no exceptions or something. The main problem it is that when the error occur than it is not possible to reset port or something or maybe i'm doing it wrong way. please help me with this issue. Thank you for any help in advice Milan
Last updated: 2025-05-23

Post by george32 on Learning ST in an object-oriented way. ^{CODESYS Forge talk (Post)}
Dear all, I am currently creating a program in the ST language. Because the program is starting to grow nicely I would like to switch to a more object-oriented way of programming. (Like for example in Python). By surfing the internet I found out that Function Blocks is the best method for this. Now I would like to delve further into this, with all the possibilities that Function Blocks have only I cannot find a clear course, explanation of what everything is around the function block thing and how to approach everything. I find the standard documentation around Function Blocks rather abstract and the examples are minimal. Therefore I am looking for a page/course/document explaining object oriented programming in Codesys (or other PLC programming environment). Do you have any recommendations on this?
Last updated: 2025-06-10

Post by s1mon on Two OneWireMaster on one Raspberry PI 5 ^{CODESYS Forge talk (Post)}
Hi, I want to use two OneWireMaster on a Raspberry Pi5. I'm running Codesys Control for Raspberry Pi 64SL V 4.15.0.0. Under Linux I've configured two GPIOs for 1w bus usage on GPIO4 and GPIO27. Under Linux both masters seem to work fine and I can readout both sensors connected to both GPIOs. The two masters are 'w1_bus_master1' and 'w1_bus_master2'. In Codesys I've configured to OneWireMasters with the corresponding file paths. But in Codesys the 2nd onewiremaster "w1_bus_master2" doesn't work. Status is showing "OnewireMaster : Not running" What am I doing wrong? Does Codesys on Raspberry support multiple OneWireMasters? Any help is appreciated.
Last updated: 2025-06-10

Post by s1mon on Two OneWireMaster on one Raspberry PI 5 ^{CODESYS Forge talk (Post)}
Hi, I want to use two OneWireMaster on a Raspberry Pi5. I'm running Codesys Control for Raspberry Pi 64SL V 4.15.0.0. Under Linux I've configured two GPIOs for 1w bus usage on GPIO4 and GPIO27. Under Linux both masters seem to work fine and I can readout both sensors connected to both GPIOs. The two masters are 'w1_bus_master1' and 'w1_bus_master2'. In Codesys I've configured to OneWireMasters with the corresponding file paths. But in Codesys the 2nd onewiremaster "w1_bus_master2" doesn't work. Status is showing "OnewireMaster : Not running" What am I doing wrong? Does Codesys on Raspberry support multiple OneWireMasters? Any help is appreciated.
Last updated: 2025-06-10

Post by manuknecht on Using an Axis of an Axis Group in Torque Conctrol ^{CODESYS Forge talk (Post)}
I don't seem to be able to use an axis, which is part of an Axis Group in torque control mode. I call the SMC_SetControllerMode FB to switch from position to torque control mode, followed by the SMC_SetTorque FB to set the desired torque. This works flawlessly for most axes, however if an axis is part of an axis group, switching the controller mode seems to work without any issues, but the desired torque is never set. SMC_SetTorque does not return an error, but fSetTorque of the axis is never changed. Disabling the axis group before does not change anything, but if I use MC_UngroupAllAxes before changing the controller mode, it all works as it should. Is there no way to control a single axis in torque control, if it is part of an axis group?
Last updated: 2025-07-17

Post by fedex03 on Read Global Variable from an IoT Device ^{CODESYS Forge talk (Post)}
Hello everyone, I am new to the forum, and to programming with CodeSys. I am dealing with IoT device for industry and I should check if a device is able to read/write global variables in an EtherNet/IP Master. Since I do not have an EtherNet/IP PLC, I thought of using CodeSys as a softPLC. I created a program with a set of global variables (GVL) and a task that increments them. I would like to know if I need to enable any options so that the global variables can be read by IoT devices. My device supports Class 2 Class (Explicit Messaging Connection) communication. Thank you in advance for your help.
Last updated: 2025-07-22

Post by bruceae on Special Characters ^{CODESYS Forge talk (Post)}
Hello, I am fairly new to the codesys environment. Is there a reference chart that I can look at in order to write special character in a string? The Special characters that I need to inclue inside the string are as follows; Null Bell Carriage Return I have a TCP_Write command that I am sending to an external device. In order for that device to function properly it needs to see the string with the null and bell characters as the header, followed by the desired command, terminated with the carriage return. Any reference sheet or how to write this in the actual string would be greatly appreciated.
Last updated: 2025-08-26

Post by antonz on CoDeSys v3.5: creating libraries for both 32-bit and 64-bit controllers ^{CODESYS Forge talk (Post)}
Follow up question: in the Project Settings, under Library Development, there is an option related to this: Check all Pool Objects -> Pointer size to use Options are: * 32 Bit * 64 Bit * 32 and 64 Bit The descriptions and online help suggest to me this is only relevant for checking and showing any incorrect pointer types as an error in the IDE. E.g. using a DWORD to store a pointer value on a 64-bit controller. It would not control the creation of either 32-bit or 64-bit compiled libraries. Is that correct?
Last updated: 2025-09-01

Post by em1681 on Modbus RTU over 750-652 ^{CODESYS Forge talk (Post)}
Hi, It's my first time operating in Codesys 2.3, but I have done a good amount of Codesys programming, so I'm a little familiar. I haven't done a lot of RTU, but a lot of Modbus TCP. I don't have the PLC in my reach at the moment, but I'm trying to be a little ahead. We're adding the 750-652 module to read energy from a flowmeter over RTU. There will only be 1 slave. I attached pictures of my current hardware, PLC code, the register datasheet from the slave and the only modbus serial library I seem to have available. I'm uncertain if this will work. Any help or clarification on how things work will be greatly appreciated. Thanks in advance.
Last updated: 2025-09-01

Post by alexgooi on Codesys virtual control redundancy ^{CODESYS Forge talk (Post)}
Dear Forum, I’m currently investigating the possibilities of Codesys virtual control (Linux). The research rig consists of a PC (Debian with real time kernel) with a docker server installed on it. The PC is communicating with a Remote I/O and I have to say the performance is great. The process in the container is running (soft) real time. Currently I’m checking if it is possible to replace physical controllers by remote I/O’s and run the Codesys applications on a docker server. If I’m going into this route the reliability of the server is very important (server down, complete installation down), is it possible to make the server redundant without needing 2 separate containers (including licenses), and maintaining the real time behavior? I’m not only expecting direct answers, if you have any idea or thought they are very welcome. Kind regards Alex
Last updated: 2025-09-03

Post by dkugler on Webvisu Combined Authentication ^{CODESYS Forge talk (Post)}
you are able to do this all in one screen. It is possible to set the rights of every element to visible but not editable for the user "none". so everyone is able to see this elements, but can't do any changes. At the login button you set the rights to editable for the user "none" to be able to go to the login. Every element that should be hidden before logging in, set the rights visible and editable only for "higher" users. Hint: to change rights you are able to select more then one element and edit rights for all at the same time. Saves a lot of time! Good luck!
Last updated: 2025-09-03

Post by beavel on Customizing FileOpenSave Dialog and Keypad Integration in Visualization ^{CODESYS Forge talk (Post)}
Hi all, I'm looking to adjust the visualization of the FileOpenSave dialog. Is there a library or visualization file associated with this dialog that can be extracted, customized, and re-imported into the project — similar to how the user management dialogs can be handled? Alternatively, is there a supported way to replace or override the default dialog with a custom one? Also, is it possible to configure the FileOpenSave dialog to use a custom keypad for text input? The rest of the project uses a custom keypad due to readability concerns (the default one is too small), and this inconsistency is now quite noticeable. Any guidance or workarounds would be greatly appreciated. Thanks in advance! @thk @eschwellinger @sheberle
Last updated: 2025-09-08

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