Deleting a trend record? ^{CODESYS Forge talk (Thread)}
Deleting a trend record?
Last updated: 2015-01-05

output modele A ^{CODESYS Forge talk (Thread)}
output modele A
Last updated: 2015-10-26

STRUCTs in a GVL ^{CODESYS Forge talk (Thread)}
STRUCTs in a GVL
Last updated: 2021-03-27

Start a time variable? ^{CODESYS Forge talk (Thread)}
Start a time variable?
Last updated: 2017-03-10

Indexing a Pointer ^{CODESYS Forge talk (Thread)}
Indexing a Pointer
Last updated: 2016-02-11

Restart/Reset a task ^{CODESYS Forge talk (Thread)}
Restart/Reset a task
Last updated: 2017-05-20

Library in a library ^{CODESYS Forge talk (Thread)}
Library in a library
Last updated: 2023-03-13

creating a visualization table ^{CODESYS Forge talk (Thread)}
creating a visualization table
Last updated: 2024-01-03

Read a webclient value ^{CODESYS Forge talk (Thread)}
Read a webclient value
Last updated: 2026-10-08

Post by imdatatas on Remote to PLC device in City-B from City-A ^{CODESYS Forge talk (Post)}
Hello, In an example scenario like below figure, can the developer in City-A connect to the device in City-B remotely using only "Codesys Automation Server" and "Edge Gateway" with the following structure? If no, what should be done with Automation Server for this remote connection requirement? If yes, how should it be configured for this remote connection requirement? Thank you in advance for your answers. Regards, Imdat
Last updated: 2025-02-04

Post by yannickasselin on Dynamically enabling/disabling Modbus slave devices in runtime (performance issue with timeouts) ^{CODESYS Forge talk (Post)}
I would definitely try using the "Reconfigure" function block from "CAA Device Diagnosis@ library. https://content.helpme-codesys.com/en/libs/CAA%20Device%20Diagnosis/3.5.17.0/CAA-Device-Diagnosis/Function-Blocks/Reconfigure/Reconfigure.html#:~:text=This%20function%20block%20reads%20and,take%20effect. Although I have not tried it with Modbus, I had great success with EtherNet/IP, Profinet and EtherCAT. You can also have a look at the other functions in this library. There are useful functions to help iterate through all the nodes under a master node.
Last updated: 2025-08-12

Post by takashi on CODESYSControlWinCE Crash ^{CODESYS Forge talk (Post)}
Hey all CODESYS-experts. I'm at a customer site, and we hade a power-failure and one of the devices apparently runs codesys and has crashed. It's an old device (out of warranty) that is bought many years ago. Now this device doesn't seem to boot. Any idea what to do in this case? We have access to the drive so we have access to the files. See screenshots.
Last updated: 2024-01-23

Post by alez on CANOpen SDO to write VISIBLE STRING ^{CODESYS Forge talk (Post)}
Hello, I am experiencing difficulties in configuring a CANopen device by sending SDOs. In particular I am attempting to write an Object Dictionary that has VISIBLE STRING as the Data Type. When I try to configure the sending of an SDO from Codesys to configure this parameter I am not allowed to enter a string value. In my particular case I am trying to change the Manufacturer Device Name ( Index 0x1008 ). Could it be that Codesys doesn't manage these types of variables?
Last updated: 2024-04-29

Post by timvh on OPC UA PubSub SL 1.3 — UADP WriterGroup with assigned PSS.SecurityGroup still publishes plaintext ^{CODESYS Forge talk (Post)}
I never tried this, but maybe you need to create a certificate on the controller for this? See the menu View - Security Screen. Select the device and see if you need to create a certificate. And maybe you also need to accept the certificate of the other device. This can also be done in the security screen. PS, the CODESYS Runtime Control version must be greater than 3.5.21.0.
Last updated: 2026-06-26

Post by cihangur on OpC UA server on Raspberry Pi 64 SL runtime ^{CODESYS Forge talk (Post)}
After my tests, I noticed two issues. 1- WinCC disconnects the connection after receiving the GetEndPointResponse message from CoDeSys. (I found it with UAExpert and Wireshark.) 2- It establishes a connection despite waiting for a while on the network with DNS. As a result of this information: I solved the problem by adding the line "193.193.193.150 t9pac" to the C:\Windows\System32\Drivers\etc\hosts file and making Windows accept messages coming from the IP number 193.193.193.150 as coming from t9pac. (t9pac is the name of my PLC running CoDeSys.) If there is a setting that will allow CoDeSys OPC UA to respond to GetEndPointRequest with its IP address, this problem will not occur.
Last updated: 2024-12-12

Post by cer-wa on Not able to connect multiple profinet encoder in codesys Linux ARM64 ^{CODESYS Forge talk (Post)}
Hello, currently im working with a RevPi connect 5 on a codesys project. Up until now I was having a blast because things were going really smooth but for like almost a day im kind of stuck on the integration of multiple profinet sensors into my project. This is kind of a bummer because that should be an easy thing to do. What I tried so far was to create and additional ethernet adapter where I then tried to connect my devices. in the beginning I tried to connect the devices directly which was not working because I could assign the IP-adress only to the ethernet adapter and not to the devices but the device was found in the device repository (this gets important in the second part) So what I tried next was to setup a PN-Controller and connect my devices subsequently to the Controller. Sadly now the devices wont show up in the device repository anymore. To me its not clear why this is happening. And the worst thing is: I went ahead and setup a device completely like I would want to have it in the project and when I then click on scan devices I can even find the device. But it can not be added to project for whatever reason eventhough im 100% certain that the gsdml file is the correct one. Can anyone help me with this. Like I said this seems like an easy thing to do and its taking me way longer than expected already. The only thing that came to my mind why this might not work is because I have codesys license which only allows one profinet instance. Could that be the case? The error message seems then pretty unfit but ok. I will be grateful for every advice. Thanks in advance! Best regards!
Last updated: 2025-09-25

Post by eoahe on Problem Reading Registers via Modbus from non Codesys device ^{CODESYS Forge talk (Post)}
Hey Guys :) I have the following Problem using Modbus via Codesys: I'm trying to implement a Modbus Device into my codesys project. The device is a Router from Teltonika (RUT956) and it can communicate via Modbus. Currently I'm trying to implement it into my codesys prject as a slave and I'm using my windows computer as master. As it is not a codesys device (the codesys application is not uploaded to device as it has its own software) I'm having problems requesting and reading registers from the router. I've set up my windows computer as Master and implemented the router as slave. When I go online on my master device it sais that it has established a connection to the slave (router)(So I'm thinking this could work as there is a connection?). The goal is to read the GPS (latitude and longitude) data and on the homepage of teltonika you can find the register address and number of registers (adress 143 for latitude and 145 for longitude; both have a number of two registers). I've found tutorials how to read specific registers via their register address with other modbus programs (like modbus-cli), but as my entire project is established in codesys I was hoping to read these specific registers via codesys so that I can show the GPS data on my dashboard. I've tried establishing slave channels but that hasn't been working. I tried read input register channels of the length 4 but it's not possible to define specific register addresses to read via codesys so that didn't work (I jsut get a slaves device failure) and I've also tried establishing 516 (total number of registers the router sends I think?) read inputregister channels but that has the samle failure... So i guess the problem I'm having is establishing slave channels to read these specific registers. Does anyone know how to tackle this problem and has maybe had the same problem? Or maybe someone knows a workaround? I'm quite new to codesys so maybe I'm also lacking expertise...
Last updated: 2025-03-01

Post by baltzer on ICertificateVerifier.VerifyCertificate doesn't appear to override an ERR_CERT_HAS_EXPIRED rejection in TCP_Client.Upgrade() ^{CODESYS Forge talk (Post)}
Follow-up: working workaround found (routing TLS outside CODESYS) For anyone finding this thread later with the same problem (a third-party device presenting a self-signed and/or expired certificate that ICertificateVerifier/udiVerificationMode won't let you connect through) - we never got a working fix within NBS itself, but found a practical workaround worth sharing. Approach: run a local TLS-terminating proxy on the same host as the CODESYS runtime, and have CODESYS talk plain, unencrypted TCP to it instead of connecting to the remote device directly over TLS: CODESYS --plain TCP--> 127.0.0.1:<port> --stunnel/TLS--> <remote device>:<port> We used stunnel (client mode), with certificate verification explicitly disabled at that layer (verifyChain = no, verifyPeer = no) - a simple, well-documented one-line option, unlike anything we could get working inside NBS. Running it as a systemd service with Restart=always means it survives reboots and recovers automatically if the proxy or the remote device drops. On the CODESYS side, this required no changes beyond pointing TCP_Client at 127.0.0.1 instead of the device's real IP, and removing the TLSContext/ICertificateVerifier code entirely - the rest of our application-layer logic (framing, checksums, etc.) was completely unaffected, since none of that ever depended on where the TLS termination happened. Confirmed working end-to-end against a real device with an expired self-signed certificate, running on CODESYS Control for Raspberry Pi SL (Linux). We haven't yet set this up on Windows - stunnel does have Windows builds available, so the same general approach should be possible there too, but that combination isn't tested or confirmed by us at this point. Caveat: this only makes sense when the proxy and the CODESYS runtime are on the same trusted host (in our case, both on the same Raspberry Pi) - don't expose the proxy's plaintext side on a reachable network interface, since that would create an unauthenticated plaintext path to the device. The original question - whether there's a supported way to override an ERR_CERT_HAS_EXPIRED/self-signed rejection from within NBS's own TLSContext/ICertificateVerifier - remains open as far as we know. Still happy to hear from anyone who's solved that particular piece, since the workaround above is a practical detour rather than an actual answer to the original question.
Last updated: 2026-08-06

Post by mondinmr on First IO address of a CAADiagDeviceDefault. ^{CODESYS Forge talk (Post)}
I have a device CAADiagDeviceDefault: IoConfig_Globals.Axis_A In our library, we perform introspection of the Etc_SlaveDiag. In that case, we have connectors, and by searching for them by address, I can find them in the IO mapping using the offset and size provided by EtherCAT. However, a Lenze i700 drive, instead of placing the IO mapping in the Etc_SlaveDiag device, places it in a sub-device CAADiagDeviceDefault. So, when I perform introspection, I cannot find the IO correspondences. Yet, in the CAADiagDeviceDefault, I do not find the connectors and cannot do the matching. Is there a way with a pointer or reference to a CAADiagDeviceDefault to obtain the address of the first input and the address of the first output? This is because we have our own motion library with many EtherCAT devices that automatically configure the mappings, but I can't manage to do so with the Lenze i700.
Last updated: 2024-08-22

Post by kreisfilho on Stop raspberry from executing a plc program ^{CODESYS Forge talk (Post)}
Hi guys, Can someone inform where in a raspberry pi are stored the codesys programs? I´ve been training the use of a RPI as PLC, which works pretty well, however while both the RPI and PC (running codesys) remain connected to the same network. The question is: how to run the codesys program downloaded to the RPI as a stand alone device (disconnected from the PC)? Thanks! Kreis
Last updated: 2023-08-23

Post by eschwellinger on cannot connect ot linux runtime: device does not answer the scanrequest ^{CODESYS Forge talk (Post)}
for me looks like you do not use latest CODESYS IDE version, there is a known bug if you use a newer runtime your are forced to use a more complex password as user for the login. The old IDE version does not show this problem on login. so either update CODESYS or use a pw which meet the complexity requirements.
Last updated: 2026-06-11

Post by lzml on HTML5 visualization controls disabled on CODESYS Control for Linux SL - overlay not supported? ^{CODESYS Forge talk (Post)}
Thanks for the suggestion - I updated everything via the CODESYS Installer and restarted, but I'm still hitting the same error. What I did - Updated via Tools > CODESYS Installer - Visualization system libraries (VisuElems, VisuElemsAlarm, VisuInputs, VisuNativeControl, etc.): 4.7.0.0 -> 4.10.0.0 - CODESYS Control for Linux SL: 4.15.0.0 -> 4.21.0.0 (based on CODESYS SDK 3.5.22.20) - Restarted CODESYS Development System Checked project environment (Project > Project Environment) after restart - Compiler version: 3.5.22.0 - Library versions: all up to date - Visualization Profile: CODESYS Visualization 4.10.0.0 - SoftMotion version: 4.20.2.0 Result: compiling with Device = CODESYS Control for Linux SL still fails with the same error: "Overlay is not supported for your target visualization device." The custom HTML5 control is still disabled/missing from the Toolbox with this Device selected (same as before), and still appears normally when I switch the Device to a Windows target. Is there anything else specific I should check (e.g. a setting on the Device description itself, a different SL package/edition, or is WebVisu overlay for custom HTML5 controls simply not implemented yet for CODESYS Control for Linux SL regardless of package version)? Any pointer appreciated.
Last updated: 2026-08-05

Post by muhq on Profinet connection to Siemens CP343-1 Lean (IO-Device/Slave) ^{CODESYS Forge talk (Post)}
Hi, I am quite new to Codesys and I try to do a Profinet connection to an Siemens PLC (315-2DP) with CP343-1 Lean Modul. I already configured the Siemens PLC, exported the GSDML. Then I added a new project in Codesys, added following moduls: - Ethernet - PN_Controller - Imported Profinet Device via GSDML importer When I start the programm everything looks fine but I always get the message "Stopped Profinet" and no data is available This is only for a small test. Therefore I start to do that on a Windows 10 with Development System. Later I will try to realize this on Raspberry. Ethernet Adapter is configured (192.168.1.1 / 24) Firewall deactivated WinPCap is installed S7-Station seems to be found ('fuadazenzitest') Can please somebody help me?
Last updated: 2023-08-26

Post by dhumphries on Codesys device configuration ^{CODESYS Forge talk (Post)}
First make sure the programming laptop and HMI are both on the same subnet. For example if the IP address of the HMI is 192.168.1.125 with a subnet mask 255.255.255.0 set your laptop IP to 192.168.1.120 with a subnet mask of 255.255.255.0. Make sure the cables are fully connected (the ethernet port on my programming laptop will click once but the cable is not fully seated.) Make sure the HMI is powered on, try pinging the device from a command prompt, if you can't ping the HMI there is a network issue that has to be resolved first.
Last updated: 2023-12-30

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

Sort by relevance or date