Post by timvh on FAILURE TO OPEN PROJECT ON ANOTHER COMPUTER ^{CODESYS Forge talk (Post)}
Is it really the same CODESYS version with the same add-ons? Maybe open the CODESYS installer on your home laptop, and export the configuration. On your work PC open the CODESYS installer and import the configuration.
Last updated: 2025-01-22

Post by eaglealex on Length of string and Array of bytes ^{CODESYS Forge talk (Post)}
Thank you for your answer! I know that 0 will be the end of the string. I checked it. There is no 0 in array of bytes. I made screenshots. There is array of bytes, aborted string and the result of my test via online converter.
Last updated: 2025-04-02

Post by starmaxou on How to download dependencies packages for CODESYS Control for Raspberry Pi SL ? ^{CODESYS Forge talk (Post)}
Hi everyone, I'm trying to install the CODESYS Control for Raspberry Pi SL package. The computer with CODESYS software is offline for security reasons. So, I downloaded the package on another computer and installed it manually. But this package has dependencies packages: CODESYS.Control SL Extension Package, V4.0.0.0 CODESYS.Control SL Deploy Tool, V4.10.0.0 As I said, the computer with CODESYS is offline. I cannot use the package installer to search for these packages. I did not find them in Codesys Store with another computer. Do you know where to find and download them? Thank you in advance for your help!
Last updated: 2024-05-30

Post by timvh on Get Alarm status in Codesys ^{CODESYS Forge talk (Post)}
You are right, that you can use the GetState method, but it is not that simple. You first have to get a list of (filtered) alarms from the AlarmManager. You can find an example in Forge how to do this. See https://forge.codesys.com/prj/codesys-example/alarm-manager/home/Home/ Then you can go through this list to get the state of all the (filtered) alarms. See below the code which you could use. This is all based on the example from forge. Create a program: // This example shows how to access alarms via structured text. PROGRAM PLC_PRG VAR xInit : BOOL := TRUE; udiResult : UDINT; fbAlarmFilterCriteriaAll : FB_AlarmFilterCriteriaAll; fbAlarmManagerClient : FB_AlarmManagerClient; itfAlarmManagerClient : IAlarmManagerClient := fbAlarmManagerClient; xAlarm1 : BOOL; xAlarm2 : BOOL; xWarning : BOOL; iNrOfAlarmsInAlarmList : INT; iNrOfActiveAlarmsInAlarmList : INT; paitfAlarm: POINTER TO ARRAY [0..0] OF AlarmManager.IAlarm; iAlarmIndex : INT; eAlarmState: AlarmManager.AlarmState; END_VAR IF xInit THEN xInit := FALSE; fbAlarmManagerClient.itfAlarmFilterCriteria := fbAlarmFilterCriteriaAll; // register alarm client to get updated about alarm status / changes udiResult := AlarmManager.g_AlarmHandler.RegisterClient(itfAlarmManagerClient, 0, 0); END_IF // Polling the number of alarms udiResult := AlarmManager.g_AlarmHandler.GetActiveAlarms(itfAlarmManagerClient, parritfActiveAlarms => paitfAlarm, iCountActiveAlarms => iNrOfAlarmsInAlarmList); iAlarmIndex := 0; iNrOfActiveAlarmsInAlarmList := 0; WHILE iAlarmIndex < iNrOfAlarmsInAlarmList DO eAlarmState := paitfAlarm^[iAlarmIndex].GetState(); IF eAlarmState = AlarmManager.AlarmState.Active OR eAlarmState = AlarmManager.AlarmState.ActiveAcknowledged THEN iNrOfActiveAlarmsInAlarmList := iNrOfActiveAlarmsInAlarmList + 1; END_IF iAlarmIndex := iAlarmIndex + 1; END_WHILE See below some details about the function blocks: One function block should implement the IAlarmFilterCriteria interface. This can be empty except a few methods. FUNCTION_BLOCK FB_AlarmFilterCriteriaAll IMPLEMENTS AlarmManager.IAlarmFilterCriteria Method implementation (others related to interface are empty) METHOD AreAllAlarmClassesSelected : BOOL AreAllAlarmClassesSelected := TRUE; METHOD AreAllAlarmGroupsSelected : BOOL AreAllAlarmGroupsSelected := TRUE; METHOD GetPriorityFrom : USINT GetPriorityFrom := 0; METHOD GetPriorityTo : USINT GetPriorityTo := 255; The other function block should implement IAlarmManagerClient and get a reference to the FB which implements the IAlarmFilterCriteria FUNCTION_BLOCK FB_AlarmManagerClient IMPLEMENTS AlarmManager.IAlarmManagerClient VAR_INPUT itfAlarmFilterCriteria: AlarmManager.IAlarmFilterCriteria; END_VAR Method implementation (others related to the interface are empty) METHOD GetFilterCriteria : AlarmManager.IAlarmFilterCriteria // see VAR_INPUT for filter GetFilterCriteria := itfAlarmFilterCriteria; Off course you have to add the AlarmManager to your application and add some alarms to it.
Last updated: 2025-09-02

Post by jzhvymetal77 on Special Chars in Visualizationfor QR code string ^{CODESYS Forge talk (Post)}
In Visualization, is there any way to make special characters in a string display properly in a Text object? I wrote a function block to create QR codes at runtime. My code uses “$DB,” which in ASCII should render as a solid block. The code works, but to display it in Visualization I had to create multiple rectangles with visibility bound to a BOOL array. That works, but since each BOOL must be exposed as a separate variable, it consumes most of the available monitoring resources. See Attached image.
Last updated: 2025-09-29

Post by jzhvymetal77 on Special Chars in Visualizationfor QR code string ^{CODESYS Forge talk (Post)}
In Visualization, is there any way to make special characters in a string display properly in a Text object? I wrote a function block to create QR codes at runtime. My code uses “$DB,” which in ASCII should render as a solid block. The code works, but to display it in Visualization I had to create multiple rectangles with visibility bound to a BOOL array. That works, but since each BOOL must be exposed as a separate variable, it consumes most of the available monitoring resources. See Attached image.
Last updated: 2025-09-29

Post by r-niedermayer on C0564 Warning Message ^{CODESYS Forge talk (Post)}
Please see or Online Help on how to initialize variable before using them: https://content.helpme-codesys.com/en/CODESYS%20Development%20System/_cds_pragma_attribute_global_init_slot.html Regarding the Attribute global_init_slot: You can use this pragma to influence the order in which signatures are processed during global initialization. It can only be applied to signatures. By default, the initialization sequence for variables from global variable lists is undefined! However, if, for example, variables from one list depend on variables from another list, it is necessary to initialize one before the other. (Aee OLH and Syntax) The placeholder <slot> must be replaced by an integer value that defines the position in the initialization sequence.</slot> The default value is 50000. A lower value causes an earlier initialization! If several signatures have the same value for the 'global_init_slot' attribute, the order of their initialization remains undefined! Cautious application should therefore be considered! Example: The project contains f.e. two global variable lists GVL_1 and GVL_2. The global variable "A" is part of the global variable list GVL_1: {attribute 'global_init_slot' := '300'} VAR_GLOBAL A : INT:=1000; END_VAR The initialization values of the variables "B" and "C" of GVL_2 are dependent on the variable "A". {attribute 'global_init_slot' := '350'} VAR_GLOBAL B : INT:=A+1; C : INT:=A-1; END_VAR So if you set the 'global_init_slot' attribute of the global variable list GVL_1 to 300, i.e. to the lowest initialization value in the example, then it is ensured that the expression "A+1" is well-defined at the time of initialization of "B".
Last updated: 2024-01-30

Post by eaglealex on Length of string and Array of bytes ^{CODESYS Forge talk (Post)}
Browser's bug... Sorry
Last updated: 2025-04-02

Post by mxj262 on FB having single input but initialized with Array ^{CODESYS Forge talk (Post)}
Last updated: 2024-05-04

Post by mxj262 on FB having single input but initialized with Array ^{CODESYS Forge talk (Post)}
works
Last updated: 2024-05-06

Post by martinlithlith on Device User Logon and No device is responding.. Pi4b codesys 3.5 SP19 2 + (64-bit) ^{CODESYS Forge talk (Post)}
Hi, Thank you for your reply! What should be the version 4.9.0.0? I have a user named pi on the pi, thats what i´m using as credientials to be able to for example update/install runtime. Or do i need another user? once agin, thank for the reply! Martin
Last updated: 2023-09-11

Post by installwhat on raspistepper error after install ^{CODESYS Forge talk (Post)}
from another post on this forum .... In your library project select Project -> Project Information. On the Properties table remove the "LanguageModelAttribute" Value "Qualified Access Only". This will allow you to access the object without qualifying the access. ...... I guess they've compiled it the library with that setting and now I need to mess around with versions.
Last updated: 2024-04-20

Post by kuegerls on SysProcessExecuteCommand2 and CANopen Device ^{CODESYS Forge talk (Post)}
I have now conducted some tests. The problem occurs when the Python script establishes an OPCUA connection, even if I only establish the connection without reading or writing any data. Is there another way to exchange data between Python and CODESYS without having to put in a lot of effort?
Last updated: 2024-06-24

Post by respl on IFM EXOR Network variable Error ^{CODESYS Forge talk (Post)}
We are connected IFM CR711S to Exor EX710. We are exchanging data using network variables. Both devices are configured on same project so no need to use file source. When tested application it works fine. But after 3 months same application not working. We are able to send data from CR711 to EX710 but data from Ex710 to CR711s works only for one scan when we cold reset CR 711S. Can somebody help to find out error.
Last updated: 2025-03-17

Post by macros8 on Translation - How to get text as reference in Frames translated? ^{CODESYS Forge talk (Post)}
Hi, one more point. I have been able to create Property of Text which is added to Global text list so it´s fine. But as soon as I use Frame configuration I lose all other properties but some very basics. I need to have still possibility to set Input configuration because my element is Button. Do you know how to make visible all standard properties + my own properties created in Frame configuration? Thanks a lot. M.
Last updated: 2024-01-03

Post by davidking on Error, visualisation property handling, VISU_USEPROPERTYINFO ^{CODESYS Forge talk (Post)}
Solution: Disable VISU_USEPROPERTYINFO define Go to Project → Options (or Project → Properties, depending on your CODESYS version). Find the section called Compiler Defines. Look for the define: nginx Copy Edit VISU_USEPROPERTYINFO Delete it from the list, or uncheck it if it’s a checkbox. Save your changes and try compiling the project again. → This is the right approach if you don’t need property handling for visualization elements.
Last updated: 2025-07-09

Post by timvh on Licensing info not available. ^{CODESYS Forge talk (Post)}
In the VPLC configuration settings there is an entry for the IP address of the license server. In this setting fill in the IP address of your device (host IP address). Then when the virtual PLC starts up, it will get the license from the license container on the host. You can do this for all VPLC's running on your device. The VPLC will always take the smallest license which fits the required license. So if you have 2 licenses for VPLC's with small and large applications, then this will work fine if you start up one VPLC which requires the small license and the other which requires the large license. PS, personally I find it much easier, especially for testing and experimenting, to activate the licenses on a CODESYS (USB) key. This is easy to activate (on your development PC) and easier to move to another device. Addtionally you don't loose the license when you need to install a completely new image on the device.
Last updated: 2025-10-02

Post by hyplcmotion on The element of type 'VisuFbElemImage' could not be updated. Reason: Index was outside the bounds of the array. ^{CODESYS Forge talk (Post)}
Hello, I’m encountering the same issue. I only receive these errors when downloading to the PLC—there are no errors during the build—after upgrading to CODESYS 3.5.21.10. Is there any known fix or recommended solution? Visualization seems running ok, no PLC log error. Visualization: Error: The element of type 'VisuFbLabel' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds. Visualization: Error: The element of type 'VisuFbElemSimple' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds. Visualization: Error: The element of type 'VisuFbElemSimple' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds. Visualization: Error: The element of type 'VisuFbElemImage' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds. Visualization: Error: The element of type 'VisuFbElemSimple' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds. Visualization: Error: The element of type 'VisuFbElemSimple' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds. Visualization: Error: The element of type 'VisuFbElemImage' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds. Visualization: Error: The element of type 'VisuFbElemButton' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds. Visualization: Error: The element of type 'VisuFbElemButton' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds. Visualization: Error: The element of type 'VisuFbElemSimple' could not be updated. Reason: Source array was not long enough. Check srcIndex and length, and the array's lower bounds.
Last updated: 2026-01-26

Post by ofey on Device parameter - ‘ModbusTCP Configuration’ ^{CODESYS Forge talk (Post)}
Hi! Do anybody know how I can add and enable the parameter 'Default Modbus TCP slave' on a device? I am currently writing a program where the PLC shall be set up as a Modbus TCP client, but I dont know how to add parameters to devices in codesys. I'm pretty new to the codesys environment. The picture in the attachment is on a similar PLC project where I have not written the code. my goal is to add this parameter in another project.
Last updated: 2023-10-04

Post by micik on PLCOpenXML Export/Import with Visualisation ^{CODESYS Forge talk (Post)}
I have noticed that Codesys doesn't provide option to Export any Visualization objects even though there is option to check to export VISU_TASK, which is strange because when Import in another empty project, user will end up with build errors. I understand that probable reason for this is that PLCOpenXML specification includes only "PLC" parts of the project (POU, PRG, variable lists, device ....), but not sure about it. Perhaps, there is some option to include visu objects also in the plcopen xml export list??
Last updated: 2025-01-07

Post by timvh on Device logon problem following fresh install ^{CODESYS Forge talk (Post)}
In your project you selected the "CODESYS Control Win V3" as device, but the device you want to connect to is a "CODESYS Control Win V3 x64". Those are not the same. If you double click on the device during the network scan, you will get information that these are not the same, but that you can change the type in your project to the x64 bit type. Another option is to "right-click" on the device in the device tree of your project and select "update device" then select the x64 type.
Last updated: 2024-03-19

Post by nelsonreis on Help with IFM EcomatController CR710S in Codesys ^{CODESYS Forge talk (Post)}
Hi, Recently I bought a CR710S controller from IFM. I installed Codesys V3.5 SP11 as recommended and all required packages (including the safety packages and the IOWrapper package). However, I can't even open the project template without getting errors related to libraries failing to load (below in the first print screen). Then, clicking ok appears only 2 errors (second print) and when trying to go to simulation and login I get another 2 different errors (third print). I really appreciate any help anyone can provide, I'm completely stuck on this right now.
Last updated: 2024-06-04

Post by dkugler on Management of a PLC network from a remote station ^{CODESYS Forge talk (Post)}
I would figure out, how to create a simple html webpage with 2 frames. One frame with buttons to select the plc. A second frame with hyperlink to the webvisu of the plc ("XXX.XXX.XXX.XXX:8080/webvisu.htm"). Selecting other PLC Button has to change the hyperlink in 2. frame. Costs only some time to figure out :-) Or setup a raspberry Pi with small visualization. Set up a button for each plc and add one browser element. Each button writes the URL of the depending plc to the URL setting of the browserelement. Costs 55€ for runtime licence and a Raspberry Pi.
Last updated: 2023-12-04

Post by rcanfield on Code Coverage and Test Manager ^{CODESYS Forge talk (Post)}
I am exploring the possibility of measuring test coverage using the Test Manager and Profiler tools. It appears there are some significant limitations. Has anyone been successful trying to use these tools? Here are my observed limitations. Am I misunderstanding anything? * Profiler only works for one "run cycle". Even warm resets will clear the coverage calculations. Thus, all tests would have to manually reset values when complete to prevent contamination to other tests. * It is not possible to see which statements were/weren't executed. One would have to use the flow control tool which cannot be used in conjunction with the Profiler, and must be viewed in realtime. * The profiler control cannot be automated and therefore must be executed through a manual procedure. Thank you!
Last updated: 2024-07-11

Post by rcanfield on Code Coverage and Test Manager ^{CODESYS Forge talk (Post)}
I am exploring the possibility of measuring test coverage using the Test Manager and Profiler tools. It appears there are some significant limitations. Has anyone been successful trying to use these tools? Here are my observed limitations. Am I misunderstanding anything? * Profiler only works for one "run cycle". Even warm resets will clear the coverage calculations. Thus, all tests would have to manually reset values when complete to prevent contamination to other tests. * It is not possible to see which statements were/weren't executed. One would have to use the flow control tool which cannot be used in conjunction with the Profiler, and must be viewed in realtime. * The profiler control cannot be automated and therefore must be executed through a manual procedure. Thank you!
Last updated: 2024-07-11

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