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 bertus on Can't get SMC_SmoothPath to work ^{CODESYS Forge talk (Post)}
Hi Georg, thanks for your time. What is the value of D_ANGLE_TOL? It is set to 0.01. Do you need the assignment bAbort := NOT bDecoder? Does it help to leave it out? This seems to make no difference. Any errors (e.g. SMC_SmoothPath.Error/ErrorID) or PLC log messages? No errors or log messages. What if you comment out SMC_SmoothMerge and SMC_LimtiDynamics, is corner smoothing still not working? Indeed. Is bDecode written from a different task (e.g. visu)? Then I would recommend to assign to a local variable (bDecodeLocal := bDecode) and use that for all FBs. Otherwise, FBs might see different values of bDecode in a single cycle, which will cause problems. It is a local variable, written from a state machine inside this program. But there is new information: During some trial and error, I tried skipping "stage 2: merge short linear segments" (SMC_SmoothMerge). And suddenly it rounds the corners, see attached image. Looking a bit closer, I noticed that (with the original program) after a download (cold start?), it in fact did round the corners, but only once. Ever next cycle in which the NC program was executed, the corners where not rounded. Not sure if there is any relation, but SMC_SmoothMerge is also the only FB which has no bAbort input. Perhaps I need to reset it (or any buffers) by other means?
Last updated: 2025-12-18

Post by sedoerr on Check For Open Dialogs On Client ^{CODESYS Forge talk (Post)}
You need to create a function around this function to check the dialogs you use in your program. That's the way i have done it.
Last updated: 2023-09-26

Post by sedoerr on Check For Open Dialogs On Client ^{CODESYS Forge talk (Post)}
FUNCTION CheckDialogOpen : BOOL VAR_INPUT sDialogName : STRING; END_VAR VAR pstClientData : POINTER TO VisuElems.VisuStructClientData; itfDialogManager : VisuElems.IDialogManager; itfMyDialog : VisuElems.IVisualisationDialog; END_VAR VisuElems.g_ClientManager.BeginIteration(); WHILE (pstClientData := VisuElems.VisuElemBase.g_ClientManager.GetNextClient()) <> 0 DO itfDialogManager := VisuElems.g_VisuManager.GetDialogManager(); itfMyDialog := itfDialogManager.GetDialog(sDialogName); CheckDialogOpen := VisuDialogs.VisuDlgUtil_IsDialogOpen(itfMyDialog,pstClientData,itfDialogManager); IF CheckDialogOpen THEN EXIT; END_IF END_WHILE
Last updated: 2023-09-26

Post by open on How to create a stopwatch? ^{CODESYS Forge talk (Post)}
Hi, how to create a stopwatch when start is pressed, timer will start counting and stop is pressed, timer will stop counting in structured text?
Last updated: 2023-12-07

Post by robert-o on Converting hex bytes to float ^{CODESYS Forge talk (Post)}
Try OSCAT_BASIC and Function DW_TO_REAL. DWORD_OF_BYTE my although help. The Lib is open and free. It is not necessary to add this Lib, you can use/copy the source code just to get an idea.
Last updated: 2024-08-05

Post by andreiot40 on Step motor ECT60 Ethercat in codesys 3.5 ^{CODESYS Forge talk (Post)}
Thanks for your response. for Master in log i have : no slaves found, Interface could not be opened, could not open network adapters. Status : Not running FOR ETC60 There is nothing !!!
Last updated: 2024-08-15

Post by open on (no subject) ^{CODESYS Forge talk (Post)}
Hello, I want my button to be attached image ON_Good when variable true but however when i copied the visualization object into a new visualization screen it become attached image ON_Bad. Anyone know how to make it attached image ON_Good? Warmest regards,
Last updated: 2024-09-03

Post by paulpotat on Can't open license manager with raspberry CM4 ^{CODESYS Forge talk (Post)}
Do someone have any information on this topic ? We tried several different CM4 boards without success, and we cannot install the licenses we bought anymore... Isn't CodeSys supposed to support CM4 Raspberry pi ?
Last updated: 2024-10-15

Post by banialuk on Modbus TCP Server ^{CODESYS Forge talk (Post)}
I created Modbus Server TCP, but when I try started i have a error "TCP socet error" "Error on open/close/read/write TCP socket."
Last updated: 2024-10-21

Post by thomas-moba on TrueType font problem ^{CODESYS Forge talk (Post)}
Thanks for your answers! Close and Open CoDeSys has no effect. I already tried the original Roboto and this is working. But I think our marketing compartment changed it.
Last updated: 2024-10-23

Post by talhaali on Control Win one instance at a time ^{CODESYS Forge talk (Post)}
I want to open one instance of runtime to be opened at a time even I hit multiple times? How can I implement it?
Last updated: 2024-10-25

Post by talhaali on Control Win one instance at a time ^{CODESYS Forge talk (Post)}
I want to open one instance of runtime to be opened at a time even I hit multiple times? How can I implement it?
Last updated: 2024-10-25

Post by talhaali on Control Win one instance at a time ^{CODESYS Forge talk (Post)}
I want to open one instance of runtime to be opened at a time even I hit multiple times? How can I implement it?
Last updated: 2024-10-25

Post by talhaali on Control Win one instance at a time ^{CODESYS Forge talk (Post)}
I want to open one instance of runtime to be opened at a time even I hit multiple times? How can I implement it?
Last updated: 2024-10-25

Post by banialuk on CAN Open Manager - varible of SYNC ^{CODESYS Forge talk (Post)}
Hello, were I have find varaible of SYNC "Cycle Period" , or variable that informs about the start of a new cycle SYNC. I want to use this variable in program code. I need to for communication beetween Mster and slave, and send PDO informations.
Last updated: 2024-10-26

Post by banialuk on CAN Open Manager - varible of SYNC ^{CODESYS Forge talk (Post)}
Hello, were I have find varaible of SYNC "Cycle Period" , or variable that informs about the start of a new cycle SYNC. I want to use this variable in program code. I need to for communication beetween Mster and slave, and send PDO informations.
Last updated: 2024-10-26

Post by navan on File access operation denied ^{CODESYS Forge talk (Post)}
Codesys V3.5.20.10 having issue open windows folder. Willing to know the [Sysfile] location in windows for V3.5.20.10 (32 bit) installation. kindly hep on this.
Last updated: 2024-11-05

Post by timvh on File access operation denied ^{CODESYS Forge talk (Post)}
Go in Windows to this location. Right click on this file and go to properties. Is it in Read-only state? Then CODESYS cannot open in Write mode.
Last updated: 2024-11-09

Post by buczekj on Problem with MCP2515 and library CANbus ^{CODESYS Forge talk (Post)}
Hello, I encountered this same error. I was able to resolve it by allocating more messages when I open the network driver (ctMessages:= 100). By default it is set to 25.
Last updated: 2025-03-27

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 matt8m8 on CODESYS Installer does't open ^{CODESYS Forge talk (Post)}
Hello, I have similar issue - installed CODESYS 64 3.5.21.10 on clean Win10 VM (virtualbox). Windows defender switched off, no additional antivirus. Codesys installer not starting (normal user and admin). No errors displayed. Windows event log screen in attachment.
Last updated: 2025-08-02

Post by davidbo on SQLite with AC_Datalog and Raspberry Pi ^{CODESYS Forge talk (Post)}
I am using V3.5 SP20 and version for AC_Datalog is 4.3.0.0 But in the log I get "DataLogStorage_SQLite: Not able to open table." Why and how to fix that?
Last updated: 2025-08-14

Post by open on How to create a stopwatch? ^{CODESYS Forge talk (Post)}
Thanks everyone for your input, I am using persistent variables to retain the timer value after machine shutdown, and main task to be as low as possible for the seconds TON to be accurate.
Last updated: 2023-12-14

Post by lostcontrol on Using a USB barcode scanner with CoDeSys ^{CODESYS Forge talk (Post)}
Hi, Has anyone actually got this working? Is there any easy way to find the old forum files, as these links only open current projects..
Last updated: 2023-12-14

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