Post by bruceae on Ethernet/IP Scan ^{CODESYS Forge talk (Post)}
Hello, I have a robot configured as a Generic Ethernet Module under Ethernet/IP Scanner. I can not see the change of state of the outputs coming from the robot on the codesys side in real-time. (The robot has it's own internal program that would changes the values of remote outputs 0-3 off and on). Also when I send data down to the inputs of the robot it doesn't transfer over as expected. As an example I'll send to the robot's input bit 0 a value of 1. It doesn't see that value change. However, when I write that input bit 0 back to a value of 0, the robot changes state and shows a value of 1. And if I change the state of a different bit, the other bits update properly, except for the bit that I changed. Any advice would be greatly appreciated, and if anything else is needed let me know.
Last updated: 2024-09-10

Post by codesysbeginner on Eaton XC303 - USB Mounting / Trend manager ^{CODESYS Forge talk (Post)}
Hi, For a project I am using the trendmanager functionality, I changed the placeholder filepath to which the SQL database is saved to: home/disk_usb, $trend$. Which only works as long as the usb was mounted to the PLC at boot. However, I'd like to be able to switch the USB's out if they break or for data analysis. However when a new (or the same) USB is plugged back in the shortcut doens't exist on the device anymore. Also in the device directory under root/mnt/ a new folder appears SDB1 in addition to SDA1 to which the Trendmanager was originally writing. The SDA1 folder is empty/unreachable while the new SDB1 folder has the contents of the USB drive. I tried disabling the trendmanger while unplugging the USB's however this doesn't work. My question, how do I make it so that when I plug a USB drive back in, it will be mounted to SDA1 instead of SDB1? Kind Regards
Last updated: 2024-10-09

Post by andrax on CodeSys Raspberry pi I2C driver not found ^{CODESYS Forge talk (Post)}
Hi, Communication with the ADS1115 is actually simple. 1. write config 2. write address pointer 3. read conversation register The ADS1115 works like a multiplexer. This means that you do this individually for each channel that you want to read. e.g: Channel 1: write config > write address pointer > read conversation register Channel 2: write config > write address pointer > read conversation register Channel 3: write config > write address pointer > read conversation register Channel 4: write config > write address pointer > read conversation register then you start again from the beginning You can also omit individual channels or read only one. It doesn't matter. I have written the driver so that I can also use it on the TCA9548. The driver is from Stefan Dreyer. In your case, the driver works and communication with the ADS1115 is running. As you can see, the cfgWrong:=FALSE If you could not write or read data, cfgWrong:=TRUE; This means that either something is wrong with your ADS1115 or you have connected something incorrectly. Question: what voltage do you want to measure?
Last updated: 2024-11-08

Post by etienneneu on loading delay with the option "check client animations and overlay of native elements" ^{CODESYS Forge talk (Post)}
Hey NicolaG_89, thanks for the tip. But I have seen in the developer tools of the Webclient that a multiple fetching of the image and script data occurs when changing frames (HTTP code 304 NOT Modified), although these are already in the clients cache, which leads to unnecessary loading of resources from the web server. This behavior can also be found if the option “Support client animations and overlay of native elements” is deactivated, but this does not lead to such long delays. I had already tested loading all Visu elements so that everything was fetched once before they could be used. But that didn't help either. To prevent this behavior (permanent fetching), I have used a different way of switching the Visu elements in the VisuDemo Project, which also uses HTML5 control elements. I implemented this with the visibility of entire Visu elements. As a result, it only has to be fetched once and does not have to be fetched again when reloading. But I am still unsure about this implementation if the scope of the visualization becomes larger, as the Codesys visualization documentation advises against using many invisible elements. Best regards Etienne
Last updated: 2024-11-19

Post by edvard-munch on How I can get "Done flag" for "Modbus Slave Channel"? ^{CODESYS Forge talk (Post)}
This is from 10 years ago, I know. But I have been using (SLAVE_DEVICE.iChannelIndex = CHANNEL_NUMBER) AND (SLAVE_DEVICE.xDone) I suppose that it shows xDone for the channel that shows up in the iChannelIndex at the same cycle? It seems to be working properly for two devices that I have been using it before But now I have another device and using two write channels, for one register each. One channel works properly and returns DONE flag When another channel is triggered, I see that it shows up in iChannelIndex, but flag DONE not received, but no Error for the channel. Also, when i check the register in the device it's evident that data has been transferred. Is this could happen sometimes with CODESYS, so DONE flag not received? Or this is a problem with a given device? With this certain register
Last updated: 2024-12-19

Post by fabiodasilveira on PLC Shell commands via ST Code ^{CODESYS Forge talk (Post)}
Hello Everybody, I have created a project for an Eaton XC303 that sends lots of data to a router via UDP. It works fine. However, when there is more than one product connected to the router, then it is necessary to change the IP address of the Ethernet port 0, from e.g. 192.168.2.11 to 192.168.2.12 (second product). It is easily done via PLC Shell (setipaddr 0 192.168.2.12), but the people in production is struggling with the PLC Shell commands and I would like to create a Visualization page that will hide that. I used the instruction: eChangeIPResult:= SysSockSetIPAddress(strEthernetPort, strIPAddress); and it works, until the PLC resets. I already read some posts and it appears that I need to stop the Ethernet 0 port and Reconfigure it, but I am really struggling to find the right way to do it. Any help will be much appreciated.
Last updated: 2025-02-28

Post by pistola on C0357: "GetNextClient" is obsolete, use VisuUtils instead ^{CODESYS Forge talk (Post)}
I'm having some troubles with this same issue and I'm wondering if someone can help me out. On a settings visual I allow the operator to enter some values however if they activate the page change button it will change the change with the Numpad dialog open. Since I'm using Visuelems.CURRENTVISU to change the pages I came across this code noted below for determining if the Numpad dialog was active. This code worked great however now in 3.5.19 it's now obsolete. I've tried following the directions in the attached program above however I can't see to get it to work in my program. Can anyone provide some help to determine if a dialog is open? FUNCTION Check_Dialog_Open : Bool VAR_INPUT sDialogName : STRING; // Input variable for the name of the dialog END_VAR VAR pstClientData : POINTER TO VisuElems.VisuStructClientData; // Pointer to the client data structure itfDialogManager : VisuElems.IDialogManager; // Interface for the dialog manager itfMyDialog : VisuElems.IVisualisationDialog; // Interface for the specific visualisation dialog END_VAR // Begin the iteration over the client manager VisuElems.g_ClientManager.BeginIteration(); // Loop through each client until no more clients are found WHILE (pstClientData := VisuElems.VisuElemBase.g_ClientManager.GetNextClient()) <> 0 DO // Get the dialog manager interface itfDialogManager := VisuElems.g_VisuManager.GetDialogManager(); // Get the specific dialog interface using the dialog name itfMyDialog := itfDialogManager.GetDialog(sDialogName); // Check if the dialog is open for the current client Check_Dialog_Open := VisuDialogs.VisuDlgUtil_IsDialogOpen(itfMyDialog, pstClientData, itfDialogManager); // If the dialog is open, exit the loop IF Check_Dialog_Open THEN EXIT; END_IF END_WHILE
Last updated: 2025-03-27

Post by macman on Codesys 3.5 OPC UA Client to Kepware OPC UA Server ^{CODESYS Forge talk (Post)}
Hi, I have problem with connecting Wago PLC WAGO 750-8212/0025-0002 configured as OPC UA client to Kepware OPC UA Server. I am using Codesys 3.5.19.70. What I did so far. To the Codesys project I added object Data Source Manager and configured connection OPC UA like below: pic 1 Then I can browse the OPC server tags in “Variables” tab after prior trust on the server side of the client certificate created in the “Communication” tab: pic 2 Additionally second certificate has been created in Codesys for runtime process in “Security screen” as well as the server certificate was approved here: pic 3 But when I compiled project, downloaded it to PLC and go to RUN I can’t read selected in “Variables” tab, OPC Server tags. I am getting such error (ID: 7001): pic 4 All two PLC certificates has been trusted in OPC server (Kepware) side: pic 5 and Kepware server configuration look like this: pic 6 I can easily connect using third party OPC UA client UaExpert to Kepware server without problem. In attachment I added also log from Kepware OPC UA server. pic # - this specifies the number of a concrete graphic from one of the collective in attachment
Last updated: 2025-04-02

Post by pernockham on Engineering IDE from linux? ^{CODESYS Forge talk (Post)}
I have done the switch (linux mint, virtual windows through QEMU/KVM) now and is generally pleased. Have had problems in two areas initially. To bridge IP to the Virtual unit (solved), I overthought things initially. Solution. Configure manually a bridge in the mint-"network connections". Use that bridge in the Qemu settings as "Bridge device", "Device name": "name of the configured bridge" Figure out where to store the projects. I started out have the data in linux world (sort of) and linking it the windows with "virtio-fs". That had some serious impact though on git-handling. It seems that virtio-fs interpreted any file-path as lowercase only even if there were uppercase, resulting in git not able to sync files between its repository and the source code (it created a new file-path for me with only lowercase). Then I switch to samba-share instead and this works much better, though (git-actions) is a part that still has low performance with lots of waiting for file-actions. What should be the best way of handling the source/git? Edit to answer myself: Save the project "locally" in windows, then a lot of slow performance is avoided. Then a git-remote sync for backup.
Last updated: 2025-05-08

Post by rene-h on ClientFilter used the same Client ID 2 times - Bug? ^{CODESYS Forge talk (Post)}
Hello, like the topic name says, i have a problem on one Visu which i cannot reproduce on another Visu. We filter buttons with input locks and visible items with [CURRENTCLIENTID] on different WebVisu's with different ID's, and one time the itfClient used the same Client ID for 2 Clients, so the Visualization on the first ID was wrong, because that one which connected after did not have the same permissions like the first, so the first one was blocked. We read the Clients with the VisuClientIteration project: //count active clients gCli.iNumberOfClients:=gCli.iNumberOfClients+1; // if client is active write data to global struct IF gCli.iNumberOfClients > 0 THEN gCli.astClientInfo[gCli.iNumberOfClients-1].iClientID:=itfClient.ClientId ; gCli.astClientInfo[gCli.iNumberOfClients-1].stCurrentVisu:=itfClient.CurrentVisuName; gCli.astClientInfo[gCli.iNumberOfClients-1].wsUserName:=itfClient.UserName; gCli.astClientInfo[gCli.iNumberOfClients-1].sIpAddress:=itfClient.GetIPv4Address(); gCli.astClientInfo[gCli.iNumberOfClients-1].ClientType:=itfClient.ClientType; END_IF Runtime from the device: 3.5.19.20 Codesys we use: 3.5.20.10 I added a screenshot where the same ID exists 2 times. Thanks for your answers.
Last updated: 2025-05-14

Post by shaunvdm on Canbus Slave SDO Read from Object ^{CODESYS Forge talk (Post)}
Busy testing a solution to use Canbus Slave to replace a physical device and convert to Ethercat device but keep the Canbus Master in place. Master needs to Read SDO object 5FA2. In the Master PLC if i send the SDO with 8 bytes in message IE: 60B 40 A2 5F 00 00 00 00 00 i get my expected 58B 43 A2 5F 00 00 68 36 02 containing data back. Problem is if we issue a 4 byte command can send 60B 40 A2 5F. Surely the canbus slave should respond with a 58B 43 A2 5F 00 00 68 36 02 but it comes back as 80 A2 5F 00 00 00 00 08 - meaning this OBJECT does not exist. Is there a setting in the canbus slave driver for Canbus to allow the 4 byte command to read the SDO OBJECTS ?
Last updated: 2025-05-27

Post by thewizard8 on Raspberry PI4 Serial Port ^{CODESYS Forge talk (Post)}
Hi Dear All, I'm using my raspberry PI4 as a CoDeSyS PLC (Build from scratch with custom electronics). I was able to implement all fieldbuses with the exception of Modbus Serial. I'm using the internal Port (GPIO) and I configured it in /etc/Codesyscontrol_user.cfg the following away: [SysCom] Linux.Devicefile.1=/dev/ttyUSB0 Linux.Devicefile.2=/dev/ttyS0 I'm using COM2 on Master configuration. I'm using a interface board from TTL/RS485 (bidirectional board), and it's works perfectly with other devices but not in CoDeSyS. I'm able to send data with python script and read it on my pc using putty, but when I use a modbus slave simulator to interface with codesys I always get red icons on master and slave. (Please find image attached). I'm pretty shure that this might be a bad parameter on my CoDeSyS runtime configurstion file. Can someone help me? I'm stuck and this is for my master degree certification.
Last updated: 2024-03-18

Post by leafy on Use third party actuator with IO-Link Master (IFM) ^{CODESYS Forge talk (Post)}
Hey there! I am currently doing a little automation project for uni. I am trying to integrate a control-valve-system (Buerkert AirLINE Field) in my IO-Link environment. With IFM sensors, I used their pre-built function blocks, but with this third-party device, i need to write my own function block. Thankfully, IFM provides a generic sensor-fb so I can write my own FB with "extends" and "super". So far, so good. I found the IODD and some other documentation and I thought I get how it works, but somehow can't really get it to work at all. From my understanding, i need to write data into the PDO-Array. But i get confused with the indices and subindices of IO-Link. I'll append the IODD and some screenshots of my project. There is an AOI for LogicXDesigner, but I can't use that in Codesys. I hope someone has integrated a IOL-device in Codesys before and can help me with this. Cheers leafy
Last updated: 2024-04-16

Post by leafy on Use third party actuator with IO-Link Master (IFM) ^{CODESYS Forge talk (Post)}
Hey there! I am currently doing a little automation project for uni. I am trying to integrate a control-valve-system (Buerkert AirLINE Field) in my IO-Link environment. With IFM sensors, I used their pre-built function blocks, but with this third-party device, i need to write my own function block. Thankfully, IFM provides a generic sensor-fb so I can write my own FB with "extends" and "super". So far, so good. I found the IODD and some other documentation and I thought I get how it works, but somehow can't really get it to work at all. From my understanding, i need to write data into the PDO-Array. But i get confused with the indices and subindices of IO-Link. I'll append the IODD and some screenshots of my project. There is an AOI for LogicXDesigner, but I can't use that in Codesys. I hope someone has integrated a IOL-device in Codesys before and can help me with this. Cheers leafy
Last updated: 2024-04-16

Post by mogam on Internal error:System.NullReferenceException: The object reference was not set to an object instance. ^{CODESYS Forge talk (Post)}
Hi everyone, I have a my App that reads values from a shared memory than 2 variables x,y were calculated. here as you can see in my code: PROGRAM PLC_PRG VAR szName : STRING := '/SM'; ( Name of the shared memory.) uxiSize : __UXINT := 646 * 2 * SIZEOF(REAL); ( Size of the shared memory. ) hShm : RTS_IEC_HANDLE; ( Handle to the shared memory ) pStart : POINTER TO REAL; ( Pointer to the first element in the memory ) pData : POINTER TO REAL; ( Pointer, which is incremented until the last sign in the memory is reached. ) shared_data :ARRAY[0..645, 0..1] OF REAL; velocity : ARRAY[0..2] OF REAL; ( Velocity array ) position : ARRAY[0..2] OF REAL; ( Position array ) angleDepth : ARRAY[0..645, 0..1] OF REAL; ( Angle and depth array ) xEndOfMemory : BOOL; x : ARRAY[0..645] OF REAL := 1.0; y : ARRAY[0..645] OF REAL := 1.0; (* Result of actions at the memory. *) OpenResult : RTS_IEC_RESULT; ReadResult : RTS_IEC_RESULT; PointerResult : RTS_IEC_RESULT; DeleteResult : RTS_IEC_RESULT; CloseResult : RTS_IEC_RESULT; i : INT; END_VAR ( Open the shared memory ) hShm := SysSharedMemoryOpen2(szName, 0, ADR(uxiSize), ADR(OpenResult)); IF hShm <> RTS_INVALID_HANDLE THEN (* Read the entire shared memory table *) SysSharedMemoryRead(hShm:= hShm, ulOffset:= 0, pbyData:= ADR(shared_data), ulSize:= uxiSize, pResult:= ADR(ReadResult)); (* Fetch the pointer from the shared memory. The pointer is pointing to the first element address *) //pStart := SysSharedMemoryGetPointer(hShm, ADR(PointerResult)); (* Close the shared memory *) //CloseResult := SysSharedMemoryClose(hShm := hShm); (* Read velocity and position data from the shared memory *) FOR i := 0 TO 2 DO velocity[i] := shared_data[i, 0]; position[i] := shared_data[i, 1]; END_FOR; (* Read angle and depth data from the shared memory *) FOR i := 0 TO 645 DO angleDepth[i, 0] := shared_data[(i + 6), 0]; angleDepth[i, 1] := shared_data[(i + 6), 1]; END_FOR; FOR i := 0 TO 645 DO x[i] := angleDepth[i, 1]*COS(angleDepth[i, 0]); y[i] := angleDepth[i, 1]*SIN(angleDepth[i, 0]); END_FOR; END_IF For these values an XY-CHART needs to be done and when i create a visualisation and set the x data and y data when i try to compile, i recieve this error: ------ Übersetzungslauf gestartet: Applikation: Device.Read_App ------- Code typisieren ... [FEHLER] Internal error:System.NullReferenceException: Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt. bei _3S.CoDeSys.LanguageModelManager.LDateType.Accept(ITypeVisitor typvis) bei ..(_IVariable , IScope5 , _ICompileContext , _ISignature ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..
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(Guid , Boolean , Boolean , Boolean , Boolean& , _ICompileContext& , _ICompileContext& , IProgressCallback , Boolean , Boolean ) Kompilierung abgeschlossen -- 1 Fehler, 0 Warnungen Übersetzung abgeschlossen -- 1 Fehler, 0 Warnungen : Kein Download möglich!
Last updated: 2024-05-24

Post by mogam on Internal error:System.NullReferenceException: The object reference was not set to an object instance. ^{CODESYS Forge talk (Post)}
Hi everyone, I have a my App that reads values from a shared memory than 2 variables x,y were calculated. here as you can see in my code: PROGRAM PLC_PRG VAR szName : STRING := '/SM'; ( Name of the shared memory.) uxiSize : __UXINT := 646 * 2 * SIZEOF(REAL); ( Size of the shared memory. ) hShm : RTS_IEC_HANDLE; ( Handle to the shared memory ) pStart : POINTER TO REAL; ( Pointer to the first element in the memory ) pData : POINTER TO REAL; ( Pointer, which is incremented until the last sign in the memory is reached. ) shared_data :ARRAY[0..645, 0..1] OF REAL; velocity : ARRAY[0..2] OF REAL; ( Velocity array ) position : ARRAY[0..2] OF REAL; ( Position array ) angleDepth : ARRAY[0..645, 0..1] OF REAL; ( Angle and depth array ) xEndOfMemory : BOOL; x : ARRAY[0..645] OF REAL := 1.0; y : ARRAY[0..645] OF REAL := 1.0; (* Result of actions at the memory. *) OpenResult : RTS_IEC_RESULT; ReadResult : RTS_IEC_RESULT; PointerResult : RTS_IEC_RESULT; DeleteResult : RTS_IEC_RESULT; CloseResult : RTS_IEC_RESULT; i : INT; END_VAR ( Open the shared memory ) hShm := SysSharedMemoryOpen2(szName, 0, ADR(uxiSize), ADR(OpenResult)); IF hShm <> RTS_INVALID_HANDLE THEN (* Read the entire shared memory table *) SysSharedMemoryRead(hShm:= hShm, ulOffset:= 0, pbyData:= ADR(shared_data), ulSize:= uxiSize, pResult:= ADR(ReadResult)); (* Fetch the pointer from the shared memory. The pointer is pointing to the first element address *) //pStart := SysSharedMemoryGetPointer(hShm, ADR(PointerResult)); (* Close the shared memory *) //CloseResult := SysSharedMemoryClose(hShm := hShm); (* Read velocity and position data from the shared memory *) FOR i := 0 TO 2 DO velocity[i] := shared_data[i, 0]; position[i] := shared_data[i, 1]; END_FOR; (* Read angle and depth data from the shared memory *) FOR i := 0 TO 645 DO angleDepth[i, 0] := shared_data[(i + 6), 0]; angleDepth[i, 1] := shared_data[(i + 6), 1]; END_FOR; FOR i := 0 TO 645 DO x[i] := angleDepth[i, 1]*COS(angleDepth[i, 0]); y[i] := angleDepth[i, 1]*SIN(angleDepth[i, 0]); END_FOR; END_IF For these values an XY-CHART needs to be done and when i create a visualisation and set the x data and y data when i try to compile, i recieve this error: ------ Übersetzungslauf gestartet: Applikation: Device.Read_App ------- Code typisieren ... [FEHLER] Internal error:System.NullReferenceException: Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt. bei _3S.CoDeSys.LanguageModelManager.LDateType.Accept(ITypeVisitor typvis) bei ..(_IVariable , IScope5 , _ICompileContext , _ISignature ) bei ..(_ISignature , IScope5 , _ICompileContext ) bei ..
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(_ICompileContext , _IPreCompileContext , _ICompileContext , IProgressCallback ) bei _3S.CoDeSys.Compiler35140.Compiler.
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(Guid , Boolean , Boolean , Boolean , Boolean& , _ICompileContext& , _ICompileContext& , IProgressCallback , Boolean , Boolean ) Kompilierung abgeschlossen -- 1 Fehler, 0 Warnungen Übersetzung abgeschlossen -- 1 Fehler, 0 Warnungen : Kein Download möglich!
Last updated: 2024-05-24

Post by paro on Modbus Client Request Not Processed ^{CODESYS Forge talk (Post)}
Hi, Problem in your code is that you are not calling the ClientFb cyclic. Please look at the Example from CODESYS: https://forge.codesys.com/prj/codesys-example/modbus/home/Home/ Your code works if the client fb is called cyclic! IF NOT initDone THEN initDone := TRUE; // configure clientTcp clientTcp(aIPaddr:=Ethernet.IPAddress, uiPort:=502); // configure clientSerial clientSerial(iPort:=SysCom.SYS_COMPORT2, dwBaudRate:=SysCom.SYS_BR_115200, byDataBits:=8, eParity:=SysCom.SYS_EVENPARITY, eStopBits:=SysCom.SYS_ONESTOPBIT, eRtuAscii:=ModbusFB.RtuAscii.RTU); // configure clientRequestReadCoils_1 clientRequestReadCoils_1(rClient:=clientTcp, uiUnitId:=42, udiTimeout:=TO_UDINT(T#10MS)); // configure clientRequestWriteSingleRegister clientRequestWriteSingleRegister(rClient:=clientTcp, uiUnitId:=43, udiTimeout:=TO_UDINT(T#10MS)); // configure clientRequestReadCoils_2 clientRequestReadCoils_2(rClient:=clientTcp, uiUnitId:=44, udiTimeout:=TO_UDINT(T#10MS)); // configure clientRequestReadInputRegisters clientRequestReadInputRegisters(rClient:=clientTcp, uiUnitId:=44, udiTimeout:=TO_UDINT(T#10MS)); END_IF // call the client FB's clientTcp(); clientSerial(); // call client request FB's clientRequestReadCoils_1(rClient:=clientTcp, xExecute:=TRUE, uiStartItem:=2, uiQuantity:=3, pData:=ADR(aDataCoils_1[0])); // for more details see Example_TCP, especially ClientRequest control (xExecute, xDone, xError). IF clientRequestReadCoils_1.xDone THEN // get data from aDataCoils_1 ... END_IF clientRequestWriteSingleRegister(rClient:=clientTcp, xExecute:=TRUE, uiItem:=3, uiValue:=123); clientRequestReadCoils_2(rClient:=clientTcp, xExecute:=TRUE, uiStartItem:=2, uiQuantity:=3, pData:=ADR(aDataCoils_2[0])); clientRequestReadInputRegisters(rClient:=clientTcp, xExecute:=TRUE, uiStartItem:=16, uiQuantity:=3, pData:=ADR(aDataInputRegisters[0]));
Last updated: 2024-05-29

Post by cmj-icsys on Custom configure tab in device editor ^{CODESYS Forge talk (Post)}
Hi everyone, I’m developing a custom CODESYS I/O driver for my company’s device, and I’ve been studying the example projects in CODESYS V3.5 SP20 Patch 5. In the IOMappingExample.project, I noticed that EtherCAT devices provide additional configuration tabs in the Device Editor, such as General, Process Data, etc. However, for custom I/O driver examples (based on IoDrv), the Device Editor only shows the default tabs like <devicename> I/O Mapping or <devicename> Parameters.</devicename></devicename> I’d like to create custom tabs or configuration pages in the Device Editor (e.g., “General Settings”, “Communication”, etc.) to allow users to configure parameters in a more structured way. Could anyone explain: How to define and register custom tabs or UI pages in the Device Editor? What tools or SDKs are needed to create UI elements such as combo boxes or check boxes? How to bind those UI controls to device parameters defined in the XML (device description)? Any example, SDK reference, or documentation link would be really helpful. Thanks in advance!
Last updated: 2025-10-20

Post by mil581 on Modbus TCP Server connection is ESTABLISHED but all holding registers are value 0? ^{CODESYS Forge talk (Post)}
Hello everyone! I'm facing a weird issue with CODESYS Control Win V3 x64 on a fresh Windows install. The situation is as follows: CODESYS Modbus TCP Server (Slave) is running and I can see live values in the mapping display of Modbus settings: GVL (e.g., 32, 42, 50). Port 502 is LISTENING according to netstat. When connecting via Modbus Poll or Node-RED, the connection status changes to ESTABLISHED and everything reports as fine. The Problem: Despite the successful connection, all holding registers return 0 no matter what. It's like the OS accepts the TCP handshake, the request counter goes up but the data payload never reaches Modbus Client (in this case Node-RED or Modbus Poll). Quick Stats: Firewall: Completely OFF. Unit ID: Verified & Matching. IP: Tried 127.0.0.1 and 192.168.0.1. Interface: Correctly bound in Ethernet Device settings. I already tried absolutely everything from changing IP address, subnet, port, deleting the project and starting new one and even nuking my old Windows install. Since I am near completion of my bachelor thesis only thing left for me to do is connect SoftPLC to NodeRED via Modbus but this issue is driving me crazy for weeks. I do not know what to do anymore.
Last updated: 2025-12-25

Post by baott569 on CODESYS OPC UA Security: HMI Client Not Receiving Server Certificate ^{CODESYS Forge talk (Post)}
Hello everyone, I am currently using OPC UA in CODESYS with the security mode BASIC256SHA256 – Signed and Encrypted. The OPC UA Server is running on an RTE CX device, and the HMI is running on another computer. I have reviewed many CODESYS documents and successfully established communication when the security mode is set to None with Anonymous login. However, when security is enabled, the server does not provide its certificate for the CODESYS HMI client to trust. Interestingly, the client can send its certificate to the server, and UAExpert works normally, but the CODESYS HMI client does not receive the server certificate. Can anyone help clarify what I might be missing? I have been stuck on this issue for three days. If I missed or misconfigured any step, please let me know. I believe I am stuck at step 15 in the following CODESYS guide: Encrypting the Communication of a Data Source OPC UA Client https://content.helpme-codesys.com/en/CODESYS%20Communication/_cds_encrypt_communication_data_sources_opc_ua_client.html Thank you very much.
Last updated: 2026-01-06

Post by baott569 on CODESYS OPC UA Security: HMI Client Not Receiving Server Certificate ^{CODESYS Forge talk (Post)}
Hello everyone, I am currently using OPC UA in CODESYS with the security mode BASIC256SHA256 – Signed and Encrypted. The OPC UA Server is running on an RTE CX device, and the HMI is running on another computer. I have reviewed many CODESYS documents and successfully established communication when the security mode is set to None with Anonymous login. However, when security is enabled, the server does not provide its certificate for the CODESYS HMI client to trust. Interestingly, the client can send its certificate to the server, and UAExpert works normally, but the CODESYS HMI client does not receive the server certificate. Can anyone help clarify what I might be missing? I have been stuck on this issue for three days. If I missed or misconfigured any step, please let me know. I believe I am stuck at step 15 in the following CODESYS guide: Encrypting the Communication of a Data Source OPC UA Client https://content.helpme-codesys.com/en/CODESYS%20Communication/_cds_encrypt_communication_data_sources_opc_ua_client.html Thank you very much.
Last updated: 2026-01-06

Post by mjam04 on AM243 LaunchPad as PROFINET Device with CODESYS – RPC Aborted error when scanning devices ^{CODESYS Forge talk (Post)}
Hello, I am currently trying to use the AM243 LaunchPad as a PROFINET device and connect to it using CODESYS. In my setup I am also using a Raspberry Pi running the CODESYS PROFINET Runtime, which acts as the PROFINET controller. The setup of the Profinet controller is correct, so all devices are in the same subnet. However, I encounter an issue when scanning for PROFINET devices in CODESYS. The AM243 LaunchPad appears in the scan results, but the following error is reported: RPC Aborted: 0x16C9A049 Additionally, CODESYS shows the message that the identification data is not available and the IP address should be checked. Because of this error, the controller cannot establish a connection to the device. Another observation is that I cannot ping the AM243 LaunchPad from my PC, even though I configured what should be the correct IP address. Setup: PROFINET Device: AM243 LaunchPad PROFINET Stack: Industrial Communication SDK example PROFINET Controller: Raspberry Pi running CODESYS with PROFINET Runtime Engineering PC: CODESYS IDE Network: Ethernet connection between PC, Raspberry Pi, and AM243 In the attachments there is a screenshot of the corresponding error. Did anybody had the same error? Any hints or debugging suggestions would be greatly appreciated. Thank you!
Last updated: 2026-03-13

Post by ilya-vah on Table element issues ^{CODESYS Forge talk (Post)}
Hello, First post here. I would like to clarify whether the following behavior is known or if it is a bugs. Issue 1 — First row not displayed when using Maximum array index with 1-based arrays Description: When displaying data from an array that is indexed starting from 1 (e.g., ARRAY[1..N]), and the number of displayed rows is limited using the Maximum array index property, the first row of the array is not shown in the visualization. Steps to reproduce: Create an array indexed from 1 (e.g., ARRAY[1..N]). Bind the array to a Table element. Limit the number of displayed rows using the Maximum array index property. Run the visualization. Actual result: The first array element (index 1) is not displayed in the table. Issue 2 — Tooltip string placeholder cannot be bound to string variable from array Description: It is not possible to use a string placeholder in the tooltip that is bound to a string variable from the array. Steps to reproduce: Use a table bound to an array containing string variables. Configure a tooltip using a string placeholder referencing a string field from the array. Run the visualization. Actual result: Tooltip doesn't show any text. A test project demonstrating both issues is attached. Thank you for your time and support.
Last updated: 2026-02-16

Post by bschraud on runtime received SIGABRT ^{CODESYS Forge talk (Post)}
Ich konnte den Fehler leider nicht wirklich finden. Hier mein bisheriger Fortschritt: Um nähere Informationen zu bekommen, habe ich einen strace erstellt: PID ermitteln: $ ps aux | grep codesyscontrol | grep -v grep --> 560 sudo strace -tt -f -p 560 -o /tmp/codesys_strace.log (Die Logdatei wird schnell einige hundert MB groß.) Mit grep -B 100 'si_signo=SIGABRT' /tmp/codesys_strace.log konnte ich die relevanten Einträge finden: (Die PID hat sich inzwischen wegen einem Reboot geändert) 1023 15:33:49.497136 writev(2, [{iov_base="Unexpected error 9 on netlink de"..., iov_len=45}], 1 <unfinished ...=""> .. 1023 15:33:49.498352 tgkill(545, 1023, SIGABRT <unfinished ...=""> 1023 15:33:49.498440 <... tgkill resumed> ) = 0 .. 1023 15:33:49.498730 --- SIGABRT {si_signo=SIGABRT, si_code=SI_TKILL, si_pid=545, si_uid=0}</unfinished></unfinished> Der Codesys Log zeigt zu diesem Zeitpunkt: Exception: HANDLED EXCPT <excpt>NonContinuable</excpt> in CH_COMM_CYCLE Mit sudo lsof -p 545 habe ich die Anzahl der geöffneten Dateien überprüft ohne Auffälligkeiten Mit sudo netstat -tunaep | grep codesys habe ich die offenen Netzwerkverbindungen der codesys Prozesse überprüft Hier sieht es so aus, dass codesyscontrol und codesysedge über die externen Netzwerkschnittstelle anstatt über den localhost kommunizieren: udp 0 0 172.19.11.127:1740 0.0.0.0: 0 17882 549/codesyscontrol. udp 0 0 172.19.11.255:1740 0.0.0.0: 0 17883 549/codesyscontrol. udp 0 0 172.19.11.255:1743 0.0.0.0: 0 16993 529/codesysedge.bin udp 0 0 172.19.11.127:1743 0.0.0.0: 0 16992 529/codesysedge.bin Leider kann ich keine Konfiguration mit einer anderen Schnittstelle einstellen.. Als nächstes habe ich die udp Kommunikation der beiden Prozesse aufgezeichnet: SPID des BlkDrvUdp Threads ermitteln: $ ps aux | grep codesyscontrol | grep -v grep --> 548 $ ps -T -p 548 | grep BlkDrvUdp --> 1200 Damit kann man den strace starten: sudo strace -p 1020 -f -tt -o /tmp/udp_control_trace.log -e trace=socket,connect,bind,sendto,recvfrom,close $ ps aux | grep codesysedge | grep -v grep --> 528 $ ps -T -p 528 | grep BlkDrvUdp --> 789 sudo strace -p 789 -f -tt -o /tmp/udp_edge_trace.log -e trace=socket,connect,bind,sendto,recvfrom,close Beim Aufzeichnen des Traces kamen wiederholte Fehlereinträge im codesyscontrol.log (diesmal ohne SIGABRT) nach folgendem Muster: tail -f /var/opt/codesys/codesyscontrol.log (mit UTC Zeit) 2025-04-17T11:23:43.147Z, 0x00000071, 1, 0, 0, Host : PAC4 2025-04-17T11:23:43.147Z, 0x00000071, 1, 0, 0, HTTP port : 8080 2025-04-17T11:23:43.147Z, 0x00000071, 1, 0, 0, HTTPS port : 443 2025-04-17T11:23:43.147Z, 0x00000071, 1, 0, 0, Connection type : HTTP 2025-04-17T11:23:43.147Z, 0x00000071, 1, 0, 0, ********** 2025-04-17T11:23:46.318Z, 0x00000061, 1, 0, 0, Create asymmetric key done! 2025-04-17T11:23:53.464Z, 0x00000071, 1, 404, 0, File $PlcLogic$/$visu$/favicon.ico not found on this server 2025-04-17T11:23:55.208Z, 0x0000100c, 1, 0, 0, Visu_PRG: Creating Client for Extern-ID: 2025487823 2025-04-17T11:23:55.216Z, 0x0000100c, 1, 0, 0, Visu_PRG: Creating Client successful for Extern-ID: 2025487823 Returned IEC-ID: 0 2025-04-17T11:40:43.471Z, 0x00000114, 4, 1, 0, ** ERROR: SysTaskCreate [CheckLicense0]: pthread_setname_np: Bad file descriptor Hier der dazu passende trace auszug von grep -B 100 '13:40:43' /tmp/udp_edge_trace.log: 798 13:40:42.592535 socket(AF_NETLINK, SOCK_RAW|SOCK_CLOEXEC, NETLINK_ROUTE) = 9 798 13:40:42.592794 bind(9, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 0 798 13:40:42.593049 sendto(9, {{len=20, type=0x12 / NLMSG_??? /, flags=NLM_F_REQUEST|0x300, seq=1744890042, pid=0}, "\x00\x00\x00\x00"}, 20, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 20 798 13:40:42.602995 sendto(9, {{len=20, type=0x16 / NLMSG_??? /, flags=NLM_F_REQUEST|0x300, seq=1744890043, pid=0}, "\x00\x00\x00\x00"}, 20, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 20 798 13:40:42.614794 close(9) = 0 798 13:40:42.615065 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 9 798 13:40:42.615331 close(9) = 0 798 13:40:42.616159 close(9) = 0 798 13:40:42.616318 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 9 798 13:40:42.616555 close(9) = 0 798 13:40:42.617209 close(9) = 0 798 13:40:42.617355 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 9 798 13:40:42.617590 close(9) = 0 798 13:40:42.618497 close(9) = 0 798 13:40:42.618712 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 9 798 13:40:42.618995 close(9) = 0 798 13:40:42.619568 close(9) = 0 798 13:40:42.620247 close(9) = 0 798 13:40:42.620441 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 9 798 13:40:42.620690 close(9) = 0 798 13:40:42.621181 close(9) = 0 798 13:40:42.621823 close(9) = 0 798 13:40:43.520036 close(9) = 0 798 13:40:43.520406 close(9) = 0 und grep -B 100 '13:40:43' /tmp/udp_control_trace.log 1035 13:40:43.389785 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 20 1035 13:40:43.390043 close(20) = 0 1035 13:40:43.390681 close(20) = 0 1035 13:40:43.393690 close(20) = 0 22586 13:40:43.450945 close(0) = 0 22586 13:40:43.451230 close(0) = -1 EBADF (Ungültiger Dateideskriptor) 22586 13:40:43.451689 close(20) = 0 22586 13:40:43.452104 close(1) = 0 22586 13:40:43.452481 close(21) = 0 22586 13:40:43.452679 close(2) = 0 22586 13:40:43.452860 close(2) = -1 EBADF (Ungültiger Dateideskriptor) 1009 13:40:43.454112 close(21) = 0 22586 13:40:43.454522 close(8) = 0 22586 13:40:43.455428 close(8) = 0 22586 13:40:43.455976 close(8) = 0 22586 13:40:43.456852 close(8) = 0 22587 13:40:43.463115 close(8) = 0 22587 13:40:43.464074 close(8) = 0 22587 13:40:43.464682 close(8) = 0 22587 13:40:43.465463 close(8) = 0 22587 13:40:43.468229 close(8) = 0 22587 13:40:43.468737 close(1 <unfinished ...=""> 1009 13:40:43.468805 close(20 <unfinished ...=""> 22587 13:40:43.468849 <... close resumed> ) = 0 1009 13:40:43.468896 <... close resumed> ) = 0 22587 13:40:43.468942 close(2) = 0 22587 13:40:43.469504 +++ exited with 0 +++ 22586 13:40:43.469670 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=22587, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- 22586 13:40:43.470175 +++ exited with 0 +++ 1009 13:40:43.470265 close(20) = 0 546 13:40:43.470577 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=22586, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- 1035 13:40:43.470913 close(20) = -1 EBADF (Ungültiger Dateideskriptor) 22588 13:40:43.480352 --- SIGRT_7 {si_signo=SIGRT_7, si_code=SI_TKILL, si_pid=546, si_uid=0} --- 22588 13:40:43.481675 --- SIGRT_6 {si_signo=SIGRT_6, si_code=SI_TKILL, si_pid=546, si_uid=0} --- 22588 13:40:43.482410 +++ exited with 0 +++</unfinished></unfinished> Die Zeile 2025-04-17T11:40:43.471Z, 0x00000114, 4, 1, 0, **** ERROR: SysTaskCreate [CheckLicense0]: pthread_setname_np: Bad file descriptor zeigt, dass der EBADF-Fehler beim Versuch auftritt, einen neuen Thread namens "CheckLicense0" zu erstellen. Die Funktion pthread_setname_np() erhält einen EBADF-Fehler. Ich weiß leider nicht, ob das eine heiße Spur ist. Parallel dazu habe ich die Aufrufe von Systemfunktionen über SysProcess_Implementation.SysProcessExecuteCommand2 auskommentiert ohne den Fehler damit abzustellen. An diesem Punkt habe ich wegen Termindruck den alten Stand der Runtime (4.11.0.0) mit der Codesys Version 3.5 SP20 wiederhergestellt und die geänderten Programme und Visualisierungen manuell getauscht mit dem Ergebnis, dass der Fehler in den letzten 2 Stunden nicht mehr aufgetreten ist. Wenn jemand das Problem kennt, wäre ich für einen Austausch dankbar. Frohe Ostern!
Last updated: 2025-04-17

Post by kurtk on SysProcess Execute Command unable to run commands with special characters ^{CODESYS Forge talk (Post)}
Thank you for this additional information. Could you please provide the references to the official documentation where you found this information ? I got as far as: Then insert this: [SysProcess] BasePriority=Realtime Command=AllowAll devoid of references of where the CodesysContol.cfg file was located or of the need to run codesys as root I incrementally located bits of information with perplexity searches but remained mired at error 25 ERR_NO_ACCESS I am curious whether root access is MANDATORY to run SysProcessExecuteCommand (- and/or any other SysProcess functions) or if a more access-constrained User=quasiroot could suffice without the security concerns ? Apparently codesys runs fine without User=root for almost everything... That raises the question: What IS the default codesys user ? I notice in the prototypes: VAR sCommand : STRING := '/usr/bin/whoami'; sOutput : STRING(255); refCommand : REFERENCE TO STRING; refOutput : REFERENCE TO STRING; resultCmd : UDINT; END_VAR whenever I attempt to build this Codesys v3.5 SP2 whines that "cannot convert type REFERENCE TO STRING to STRING" don't remember the exact message... Apparently this happens whenever a fixed-length string is involved. if I get rid of (255) and just set the string := ' '; that is sufficient to make the compiler happy. Is this a recently enforced constraint ? Why does this compile for you and not for me ? There are references to functions / utilities which are used/needed to massage the string references - but I see no specific details... I also notice you specify: Make sure the lib SysProcessImplementation, SysTypes, and CmpErrors is on the project. I don't comprehend why all of the dependent libraries are not automatically referenced, added ? I don't recall seeing anywhere but here that SysProcessImplementation must be included... It just seems odd that the default is to exclude essential libraries, or require alchemical conjuring to assemble all the ingredients for gnat soup ;-) Thanks a lot... I'm still a codesys newby getting my wheels on - or sometimes just partially on
Last updated: 2025-09-12

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