Post by derpaul on PFC200 Update to 4.9.0.0 - No Connection ^{CODESYS Forge talk (Post)}
Hallo Today I decided to perform an Update on my PFC200 but after the Update the Device was not reachable anymore. I tried reseting to factory reset. Software reset and so on, but nothing helps... In my Router I can see it, I cann SSH into the PFC200 but it is not reachable. Then I try to go back to 4.8.0.0 But now I get this error: [INFORMATION] Befehl SSH auf root@192.168.1.17 ausführen: Laufzeitsystem stoppen [FEHLER] Fehlerausgabe: /etc/init.d/codesyscontrol: line 34: /opt/codesys/scripts/init-functions: No such file or directory [INFORMATION] Standardausgabe: /etc/init.d/codesyscontrol: line 34: /opt/codesys/scripts/init-functions: No such file or directory Please help, I can't get this thing working... Regards
Last updated: 2023-09-27

Post by derpaul on PFC200 Update to 4.9.0.0 - No Connection ^{CODESYS Forge talk (Post)}
Hallo Today I decided to perform an Update on my PFC200 but after the Update the Device was not reachable anymore. I tried reseting to factory reset. Software reset and so on, but nothing helps... In my Router I can see it, I cann SSH into the PFC200 but it is not reachable. Then I try to go back to 4.8.0.0 But now I get this error: [INFORMATION] Befehl SSH auf root@192.168.1.17 ausführen: Laufzeitsystem stoppen [FEHLER] Fehlerausgabe: /etc/init.d/codesyscontrol: line 34: /opt/codesys/scripts/init-functions: No such file or directory [INFORMATION] Standardausgabe: /etc/init.d/codesyscontrol: line 34: /opt/codesys/scripts/init-functions: No such file or directory Please help, I can't get this thing working... Regards
Last updated: 2023-09-27

Post by ofey on Modbus TCP communication ^{CODESYS Forge talk (Post)}
Hi! I tried setting up the PLC I'm working with (Beijer GN-9373) to connect to a modbus master running on a laptop. I have an ethernet connection (via USB-C to ethernet) between the laptop and the controller. I have tried following tutorial on how to set this up. I have added an ethernet device with the IP-address of the PLC. Further I added a ModbusTCP_Slave_Device with default settings. I get the error "Failed to open TCP Port: 1" when I try to go online with the PLC. Earlier I tested the exact same set up with the soft PLC from codesys. I can then read/write values correctly with the Modbus master i have running on the laptop. Hope anybody can help me with this, thanks in advance!
Last updated: 2023-10-06

Post by tomgr on Codesys 3.5.19 Control Win x64 - network adapter for EtherCAT master not working ^{CODESYS Forge talk (Post)}
Hi guys I am trying to run on my laptop Codesys 3.5.19 Control Win x64 where I created a EtherCAT master. I have defined the controler, specified network adapter (my docking station) and everything worked as expected. Later I needed to test it on site (without docking station) so I changed the network adapter by EC master to my laptop network card. After that it shows "Network adapter opened" but no device can be found by scanning and in LOG is saying "SysEthernet: packet could not be sent, error code: -1". Same error with USB network card, but if I switch back to docking station, all is working again... Any idea what I'm doing wrong?
Last updated: 2023-11-22

Post by alez on CANopen safety , SRDO error behavior ^{CODESYS Forge talk (Post)}
I have a project in which there is a Safety device in CANopen, and the PLC interfaces with it as Master. I would like to understand if it is possible to set the behavior in case one of the SRDOs that I receive from the slave is no longer received. From what I have seen, if the SRDOs are not received, the CANopen safety status becomes "Not in progress" and the mapped variables freeze at the last value detected. I want to understand if it was possible to set the variables connected to the SRDOs to take a default value (e.g. zero) in the event of a CANOpen error during reception.
Last updated: 2024-07-15

Post by peterned on Array to String ^{CODESYS Forge talk (Post)}
max. string length in Codesys is 255 chars. It's not possible to cram 20,000 things in a string. If you need to send the data to another device, send the whole data[] array (as byte array, without doing anything to it) and extract the information on the other end. As each struct member has a fixed size (81 bytes, as per you declaration), this will be easy. To save some resources, consider declaring string lengths - e.g. if the max possible length for key is 10 chars, declare it key: STRING(10); and it will occupy 11 bytes instead of 81
Last updated: 2024-07-20

Post by mubeta on Reset problem with CMZ SD/SVM drive ^{CODESYS Forge talk (Post)}
In a recent project with SoftMotion 4.15.0.0, where I integrated two SD drives from CMZ (from catalogue EDS and not imported), on CANopen bus, I found that the SoftMotion MC_Reset function does not reset the drive faults. Even if the drive is in fault, either on the device or on the drive at the CoDeSys level, the function does not reset, instead reporting the error code: no error to reset. Finally, I had to connect the reset bit of the ControlWord directly to a tag in my program. Something I never had to do on other drives: Lexium, etc. all reset simply with MC_Reset.
Last updated: 2024-07-24

Post by jnoyau on Visualisaion while in simulation ^{CODESYS Forge talk (Post)}
Hi all, Im new to Codesys 3.5, and am in the process fo making a visualisation i'd eventually export towards a Wago device. The issue I'm having currently is that when I compile and connect to the simulated program, my simulation won't launch. On the Visualisation tab, all I get is a text message (where previously there was my prepared visualisation) that says "The visualisation awaits a connection. Start the application" One thing to note: I work with Codesys 3.5 in french, so this is a rough translation. And a second: I'm not getting any errors nor warnings about the visualisation tab itself upon compiling Is there a step i'm missing after launching my simulation? Or would it be some really specific issue caused by the way I've set up my program? Thanks, J
Last updated: 2024-07-31

Post by cfam on Codesys Control for PLCnext SL, Bus not running ^{CODESYS Forge talk (Post)}
Good day I would appreciate it if you can give me some advice on how to fix my "Bus Not Running Error". I am Using Codesys 3.5 SP20 and Codesys Control PLCnext SL V4.12.0.0. Codesys control was installed on the device and I can log into it but it seems that it does not pick up the PLC or the IO attached (Please see attached Image). The Bus Cycle Task of the AXL F 2152 is set to Main Task and the "Always update Variable" is Enabled on each IO Module. My Main Task interval is set to 100ms and Priority is set to 0. I have tried other options and none seem to work. Your response to this issue will be highly appreciated.
Last updated: 2024-08-12

Post by micik on Python scripting - print whole project tree ^{CODESYS Forge talk (Post)}
Hello, I have found a script for printing device tree in Codesys project. This script is available as code snippet as an exmaple for using Python in Codesys. However I feel main documentation is lacking. For example, where can I find that object has "is_device" attribute? Code examples are given here: https://content.helpme-codesys.com/en/CODESYS%20Scripting/_cds_access_cds_func_in_python_scripts.html However, I have a question how to print the whole Project tree and not just devices? Of course I need to remove check: if treeobj.is_device: But simply removing this test condition will not produce what I want. I need to print PLC Logic, Application, ad other nodes in the Project tree. Where to find this documentation?
Last updated: 2024-08-12

Post by cfam on Codesys Control for PLCnext SL, Bus not running ^{CODESYS Forge talk (Post)}
Good day I would appreciate it if you can give me some advice on how to fix my "Bus Not Running Error". I am Using Codesys 3.5 SP20 and Codesys Control PLCnext SL V4.12.0.0. Codesys control was installed on the device and I can log into it but it seems that it does not pick up the PLC or the IO attached (Please see attached Image). The Bus Cycle Task of the AXL F 2152 is set to Main Task and the "Always update Variable" is Enabled on each IO Module. My Main Task interval is set to 100ms and Priority is set to 0. I have tried other options and none seem to work. Your response to this issue will be highly appreciated.
Last updated: 2024-08-12

Post by micik on False Notification Application Error with raspberry pi 4 ^{CODESYS Forge talk (Post)}
Hello, I have just went through all steps shown on Codesys YT channel https://www.youtube.com/watch?v=RPoPscbo3Kc And it works, I have installed PI OS 32 bit and choose Single Core. However, immediattely when I create standard project with Raspberrz pi device, "Application" is underlined, like there is an error, but in reality there are no errors, and I cannot see what are these 3 messages like shown in attachment. Aside for this red underline, everything seems to work fine. How to correct this? Thank you! Update: I have found what errors are, but not sure how to correct them: Identifier 'IoDrvGPIO' not defined Function block 'IoDrvGPIO' must be instantiated to be accessed 'IoDrvGPIO' is no component of 'IoDrvGPIO'
Last updated: 2024-09-03

Post by timvh on Clarifications regarding the appropriate runtime system to use ^{CODESYS Forge talk (Post)}
If you are not using any specific Raspberry Pi functionality, then probably the "universal" Control Linux ARM SL is the approriate runtime to run on the Pi. For the license it doesn't matter which runtime version you choose, because this is not hardware based anymore, but application based. Best is to use the latest version of CODESYS. To determine which license you need, double click on your device, go to the tab License metrics.... Generate the code for your application and see which license you need based on the metrics of your application.
Last updated: 2024-09-24

Post by timvh on Communication between applications on same device/controller/runtime (Win RTE 3.5.20.20) ^{CODESYS Forge talk (Post)}
If you have a Windows system (RTE), then why not run the CODESYS HMI as separate controller. This could easily be moved to another PC if required. In the HMI you could also still use the Symbolic Var access as part of the Data Source Manager, although maybe OPC is the preferred way to make it more future proof. Or what about the Remote Target Visu. Then you can reduce the load of the main controller, while still only having to create one application including Visualization. This is now also supported for Linux systems. See: https://content.helpme-codesys.com/en/CODESYS%20Control/_rtsl_target_visu_for_linux.html https://content.helpme-codesys.com/en/CODESYS%20Visualization/_visu_execute_remote_target_visu.html
Last updated: 2024-09-28

Post by andrax on CodeSys Raspberry pi I2C driver not found ^{CODESYS Forge talk (Post)}
Ok, here are the libraries I use. First of all, try to get the ADS1115 to run completely on its own. Without MUX or other sensors. As muxboard I use this one: https://www.digikey.de/de/products/detail/sparkfun-electronics/BOB-16784/12714950?utm_adgroup=&utm_source=google&utm_medium=cpc&utm_campaign=PMax:%20Smart%20Shopping_Product_Zombie%20SKUs&utm_term=&productid=12714950&utm_content=&utm_id=go_cmp-18521752285_adg-_ad-__dev-c_ext-_prd-12714950_sig-Cj0KCQiA88a5BhDPARIsAFj595gkPXWPT8aa-EixL97BDWjO988WDhcx-iHOVbqb_H8CLpHBcwLuJW0aAu1JEALw_wcB&gad_source=1&gclid=Cj0KCQiA88a5BhDPARIsAFj595gkPXWPT8aa-EixL97BDWjO988WDhcx-iHOVbqb_H8CLpHBcwLuJW0aAu1JEALw_wcB All other boards don't work for me either. The terminating resistor is missing Important: Before you install the drivers, remove all other device drivers. My drivers are all located in ‘Raspberry I2C MUX_11_2023’
Last updated: 2024-11-11

Post by george32 on TCP Server ^{CODESYS Forge talk (Post)}
Dear people, I would like to create a TCP server in my PLC program. The TCP server needs to communicate with an external device. I have been searching the internet and found that the libraries Syssocket or CAA NetBaseSrv are two possible solutions to create a TCP server. From what I have read, CAA NetBaseSrv is more user-friendly to implement than the Syssocket variant. However, I am still struggling to actually implement this library. Foremost is my little knowledge about creating a TCP server and how to read/understand each function block, especially the outputs of some blocks and the types, e.g. server has an output CAA.Handle, but I cannot find the explanation of CAA.Handle. I tried to find a good document that can help me understand how to implement a TCP server, but I could not find it. Thank you in advance, George
Last updated: 2025-02-20

Post by struccc on Multiple applications on one device sharing variables. ^{CODESYS Forge talk (Post)}
I don't exactly recall where (I think some release notes), but I read the information that this multiple application / sub application feature is to be discontinued. Please, correct me, if I'm not right about this I am a bit sad about that - I was using that feature with more or less success. However I understand the reason behind the change: it introduces huge complexity, especially when dealing with multicore and safety support... AS I understand, it's to be replaced with the new virtual plc architecture, and standard ways for synchronizing / sharing data... So, for now the "Add application" context menu item was removed, but behind the scene it is still supported... Hint: if you still want to experiment with it, might try copy-paste things within the PLCLogic tree...
Last updated: 2025-02-28

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 bjarne-pagaard on Global Variables ^{CODESYS Forge talk (Post)}
Old thread, I know - but it still has good answers. I would like to add a bit of info to it, as I was having a problem that lead me to this thread, but didn't give an exact answer. I am porting a project to a different PLC architecture. (Wago PFC300) A GVL named 'GVL' in the POUs section of my project was shadowed by a PLC-specific library in the Application->Library Manager. So all the existing references in the device specific code to 'GVL.something' would not resolve. Right-clicking the GVL in the code and 'Go to definition' would point me to the library in the Application Library Manager. All I had to do from there, was right-click the library, and set the property 'Only allow qualified access to all identifiers' in the library.
Last updated: 2025-04-11

Post by rer-code on Codesys 3.5.18.60 – Application Loss and Persistent Data Corruption ^{CODESYS Forge talk (Post)}
Hi, I’m currently managing over 50 PLCs running Codesys version 3.5.18.60. At seemingly random intervals, some of these devices experience a failure where: All persistent variables are lost. Attempting to log in results in the message: “The application does not exist on device. Do you want to create it and proceed with download?” The log shows: “Loading retain-data/bootproject failed.” From what I’ve gathered, this may be due to a corrupted persistent data file, but I’m not entirely sure how to confirm or resolve this issue. If anyone has encountered something similar or has suggestions for troubleshooting or preventing this, I would greatly appreciate your input. Best regards
Last updated: 2025-08-19

Post by alexgooi on Licensing info not available. ^{CODESYS Forge talk (Post)}
Thank you for your quick response, I have updated to the 4.17.0 (Virtual control and the license server). Now I am able to see the softcontainer from the Codesys IDE. But when I want to activate the license I get the following message: Licensing info not available. The device does not support this service (See picture). I then tried to active it via the WBM service like you suggested. But when I try this is get an error (see picture for error). I also tried to put RTS- in front of the serial number, but when I try this I get an error that the serial number is not correct. I think I'm getting closer, but I'm not there yet.
Last updated: 2025-10-01

Post by bbmussatto on Connetion with Topcon Opus B3 ECO Full display ^{CODESYS Forge talk (Post)}
I have a Topcon Opus B3 ECO Full display and i wanna program it with codesys, but i cant connect it to the display. After creating a new project, i choose the device "Opus B3-B4-B6-3.5.19.50" that is already available in my version of codesys, but i think the problem is that my version of codesys or something else is not the same as the codesys runtime version running on my display. Can anyone tell me how i can see the codesys runtime version on my display? i tried looking in the settings (Daemon > CDS) on the display, but all i see is "N/A" for "Customer Number", "Customer Part Number" and "Customer Serial Number". Can anyone help me make this connection?
Last updated: 2025-10-07

Post by ranadheer on Implementation of IEC-104 ^{CODESYS Forge talk (Post)}
Hi Everyone, As we didn't have client for IEC - 104 - only server server is available , so because of that we are trying to make establish the communication between the external simulator as a Client and codesys itself as a server. We are looking for the variable behavior from CODESYS has to change according to the message triggered by the CLIENT (we are using simulator Application like Redisant). We are able to see the log data as the status of triggering the SCS from Client received to the Log data of the codesys device(attached screen shot of it) and in simulator panel we had set the details to trigger the data from Redisant to Codesys. Current Status: The project builds and runs successfully, but I need guidance on how to connect this to an external IEC-104 simulator for testing and visualization by using demo mode.
Last updated: 2025-10-14

Post by ranadheer on Implementation IEC-104 ^{CODESYS Forge talk (Post)}
Hi Everyone, As we didn't have client for IEC - 104 - only server server is available , so because of that we are trying to make establish the communication between the external simulator as a Client and codesys itself as a server. We are looking for the variable behavior from CODESYS has to change according to the message triggered by the CLIENT (we are using simulator Application like Redisant). We are able to see the log data as the status of triggering the SCS from Client received to the Log data of the codesys device(attached screen shot of it) and in simulator panel we had set the details to trigger the data from Redisant to Codesys. Current Status: The project builds and runs successfully, but I need guidance on how to connect this to an external IEC-104 simulator for testing and visualization by using demo mode.
Last updated: 2025-10-14

Post by cedriclee on RaspberryPI reconnection error ^{CODESYS Forge talk (Post)}
"Hello, I'm Cedric Lee, a PLC engineer based in Korea. I'm reaching out about an ongoing issue with the connection when attempting to control Beckhoff modules using Raspberry Pi with CODESYS for the first time. I use CODESYS to target the Raspberry Pi's IP, install version 4.10.0.0 of the CODESYS Runtime Package, and upon pressing Start in the Runtime, the target connects to the Raspberry Pi. However, within about a minute, an error window appears, stating 'no connection to the device. please rescan your network,' leading to the disconnection of the target. This cycle repeats. I've attached some pictures for your reference. I'm using CODESYS Development System V3, Raspberry Pi 4 Model B (installed as 64-bit), and Beckhoff EK1100 modules. If anyone has a solution to this issue, please help. Your assistance is greatly appreciated."
Last updated: 2024-01-11

Sort by relevance or date