Post by sturmghost on Find visualization elements that require a lot of computing time ^{CODESYS Forge talk (Post)}
I found out that the Codesys simulation mode is not good to measure performance. As soon as I upload the code onto the hardware PLC I can see that my visu-task needs around 60 ms to complete. I'm wondering if there is a possibility to find out which visualization/visualization element takes a lot of computing time? Then I would look for ways to decrease the long computing time.
Last updated: 2024-01-22

Post by mejak on Raspberry Pi USB HID RFID Reader - read ID in plc program ^{CODESYS Forge talk (Post)}
Hello, I have an RFID reader that is detected as a keyboard. While looking for information, I came across examples using visualization. I would like to read the ID without visualization or external code in python, only in PLC. I found on the forum that you can try reading directly from potru /dev/... https://forge.codesys.com/forge/talk/Runtime/thread/24b3527036/ How to read values directly in codesys? Or maybe there is another solution? Best Regards
Last updated: 2024-01-25

Post by rpostwvu on Shared Memory Access Issues ^{CODESYS Forge talk (Post)}
I got the shared memory example. I'm pretty sure I'm successfully created a memory space, CreateResult returns 18. szName:='CodesysDataShare'; hShm := SysSharedMemoryCreate(szName, 0, ADR(uxiSize), ADR(CreateResult)); I'm trying to access this memory with a C# application, but I get "Unable to Find Specified File". I suspect that Codesys and/or Visual Studio code alters the name I choose? Being in Windows, I cant find a way to see the mapped memory list. ~~~ using (var mmfRead = MemoryMappedFile.OpenExisting("CodesysDataShare",MemoryMappedFileRights.ReadWrite)) ~~~
Last updated: 2024-01-29

Post by suthesan on Error when I go online on Simulation or PLC ^{CODESYS Forge talk (Post)}
Hello I not sure if I made this topic under the right category. But I have a error, when I try to run a simple code on simulation or PLC. I have also tried to make a fresh project. I am testing the PLC and want to see if there is some way I can make an actuator run. Please help by looking at the picture, Iam stuckd and I don't know how to fix it.
Last updated: 2024-02-07

Post by matthew on New Ladder Diagram conversion does not work due to missing features ^{CODESYS Forge talk (Post)}
Hi @eschwellinger, I have been trying out v1.0 of the new ladder and have a few questions. I have warnings Expression or part of it has no effect I can't get rid of them, what do they exactly mean? Using the ST_Block, is there a way when online to open the ST_Block and view the running code? Thanks!
Last updated: 2024-02-09

Post by andrax on Prüfen ob Datei existiert wenn nicht neu erstellen ^{CODESYS Forge talk (Post)}
Hi, ich ich möchte prüfen ob eine Datei existiert. Wenn diese nicht existiert, soll eine erstellt werden und dort hinein geschrieben werden. Die Datei wird im Programmlauf mehrfach geöffnet und Daten hinein geschrieben. Ich will hier die Funktion File.MODE.MAPPENDPLUS benutzen, das funktioniert aber nicht. fopen.xDone bleibt false. Hier der Code: fopen.sFileName:=sFileName; fopen.eFileMode:=File.MODE.MAPPENDPLUS; // Neu erstellen und anhängen fopen.xExclusive:=TRUE; fopen( xExecute:=TRUE); IF fopen.xDone THEN hFile:=fopen.hFile; sStringToWrite:=''; writeIndex:=0; SchrittDatenlog:=60; END_IF Wo liegt mein Fehler?
Last updated: 2024-02-11

Post by jackbrady on Function Blocks and arrays of function blocks ^{CODESYS Forge talk (Post)}
Hello, I am new to Codesys and PLC programming in general (please go easy ha!) I'm not looking for code to be written for me just some help and pointing in the right direction. I am writing some code to send commands to a relay based on input values (to put it simply). Quite basic stuff. I have wrote a function block that takes a global variable (Open_command:BOOL) and outputs to another global variable (Opened : BOOL). The function block is simulating a device so I'll eventually get the globals from that. I now need to create multiple versions of this function block/ device (lets say 100) but I need each iteration of that function block to reference it's own relevant global variable. I think that the best way of doing this would be to use arrays, although I could be wrong. I am aware that for up to 100 instances I could very well manually assign everything but that seems rather time consuming and I want a fancier way of doing it. Here is a very basic example of what I am looking to do, please note I have not written this in proper code it's just to show what I mean. Global Variables V[0-100] int Open_command [0-100] Bool Opened [0-100] Bool Function Block var input x : BOOL Var output y : BOOL if x then y = TRUE ELSE y = FALSE The input to my function block will be Open_command, output will be Opened Example code. If V[x] > 10 then Open_command [x] = TRUE ELSE Open_command [x] = FALSE (So when V1 goes above 10 I need Open_command1 = TRUE therefore initiating FB1 output. V2 > 10, open_command2 = True > FB2 output V3 > 10, open_command3 = True > FB3 output ... ... ) What I can't seem to figure out is how to tie all this together, I have read through the codesys documentation and if anything it has confused me more! ha. Apologies for the poorly written post but hopefully you understand what I am trying to get at. Thanks, Jack
Last updated: 2024-02-14

Post by marlutec on [ERROR] The PLCopenXML import is not possible because Device not found. Type: 89, Id: 0000 0005, Version: 3.5.10.0 ^{CODESYS Forge talk (Post)}
Hello every one. Now i'm instaling a Weintek cMT2108x2(v2) with IR-ETN40R. When I start to import the archive content the code of I/O remote IR-ETN40R, ocurred this error. [ERROR] The PLCopenXML import is not possible because Device not found. Type: 89, Id: 0000 0005, Version: 3.5.10.0 Can someone help me? Marcos Gentil, from Brazil.
Last updated: 2024-02-15

Post by nano on Is there any support for I2C on Raspberry Pi? ^{CODESYS Forge talk (Post)}
hello jdj this question can be answered well with a pretty good forge documentation: https://forge.codesys.com/drv/io-drivers/doc/Generic/ u r also able to create in codesys directly an iec-code by using the i2c-interface as driver using the codesys ide and st depending on the stepperdriver, used in yöur hat, its possible that an driver is already available in the device-repository. which mcp-device is used on the hat?
Last updated: 2024-03-01

Post by androidzz on Json Builder problem? ^{CODESYS Forge talk (Post)}
Dear reader, I am using the codesys JSON utilities SL, 1.9.0.0 library. And then specifically the FB JSONBuilder. I need to create a main object with at least 2 objects in it. The first object is no problem, but I cannot insert the second object into the main object. See attached my code and the result I get. I am assuming that I am doing something wrong with the parent index but have tried a lot and can't get it done. Kind regards, Rob
Last updated: 2024-03-11

Post by schnepper on Error building Extension SDK Linux code ^{CODESYS Forge talk (Post)}
I'm installed the CODESYS Control for Linux SL package and am trying to use the Extension API to call a simple C function. When I get to the step to run "make all" on the Linux machine, I get the error: build interface header: out/CmpFirstTestItf.h from CmpFirstTestItf.m4 ERROR: This functionname does not contain _cext (this is mandatory, see help for details): DEF_API(void',CDECL',external_struct__fb_init',(external_struct_fb_init_struct *p)',1,0x1F77E075,0x00000001) Why does "Generate Runtime System Files" create a function that does not have cext in the name? What am I missing?
Last updated: 2024-04-01

Post by valenting on Problem with Licenced Software Metrics ^{CODESYS Forge talk (Post)}
Hi, When I try to install my codesys program with the new application-based licensing, I have an error "it exceeds the scope of the license agreement. See Device > Licensed Software Metrics" In the Licensed Software Metrics section, I see a code size < 3MB and less than 2700 variables in visualiaztions. I'm using a license "Control Basic L" with "Codesys Visualization L" option, so it should be enough with these metrics. What can I do ?
Last updated: 2024-04-22

Post by richard-wang on Codesys recipe manager - what does it do? ^{CODESYS Forge talk (Post)}
Hi All Thanks for sharing this information. For whom may not know why always get error code 16#4000 or 16#4002 while performing Recipe commands, the root cause is There is a line need to be inserted in CODESYSControl.cfg file, which is PlaceholderFilePath.1=/var/opt/codesys/PlcLogic/ I am using Pi, therefore the above path is set to my pi unit, after adding above line to my cfg file, all the Recipe commands work fine. But I still do not know how and when this file got modified though.
Last updated: 2024-04-29

Post by gseidel on Discontinuity of A/B/C axis movement. ^{CODESYS Forge talk (Post)}
Hi jonasz, you already solved it, I'm answering here for the sake of others with a similar question. You can provide the slope of the A/B/C axis with the U/V/W word. See example 3 here: https://content.helpme-codesys.com/en/CODESYS%20SoftMotion/_sm_cnc_din66025_additional_axis.html If you don't want to change the G-Code, the function block SMC_RecomputeABCSlopes can compute the slopes automatically. https://content.helpme-codesys.com/en/libs/SM3_CNC/Current/SM_CNC_POUs/SoftMotion-CNC/SoftMotion-Function-Blocks/SMC_RecomputeABCSlopes.html Best regards, Georg
Last updated: 2024-04-30

Post by miodusy on CODESYS Control Standard S and Beaglebone ^{CODESYS Forge talk (Post)}
Hi, CODESYS Control Standard S + CODESYS Visualization L, CODESYS Control for Beaglebone 4.11.0.0, CODESYS V3.5 SP20 + (64-bit) I have problem that license manager say that this device is not supported when i try active whole license. When I select only runtime and communication it is go next step, but then I no have license on in Visualistion section, all of rest of software metric licese is ok(IO, Istances of com et, code size etc.). Thanks!
Last updated: 2024-05-11

Post by corriibme on Setting array values with JSON Utilities SL ^{CODESYS Forge talk (Post)}
I have been trying to set an array value to a JSON structure of this form: {"key": [1,2,3,4]} While I have been able to create the key and set its value to an empty array, I've not had any luck in putting any value in that array. objindex:= fb_JBuilder.SetKeyWithArray("Key6", diParentIndex := diRootIndex); objindex2:= fb_JBuilder.SetValue(value:= iValue2, diParentIndex:= objindex); iValue2: ARRAY[0..3] OF INT:= [1,2,3,4]; The two lines of code above produce {"key6": []} . The second line essentially has no effect.
Last updated: 2024-05-12

Post by totorovic on Softmotion not working with simulation mode ^{CODESYS Forge talk (Post)}
Good morning, I think that the mode Simulation does not support the Softmotion functionnality because it runs the CODESYS process with normal priority wich is not a good thing for real-time behavior. If you want to test your PLC project, please use a Codesys Control Softmotion (and your computer must have the Ethercat driver installed) or much easier, download your code into the C6 Smart. BR
Last updated: 2024-05-13

Post by rene-h on VU.FbOpenDialog - TargetVisu - 2 x WebVisu ^{CODESYS Forge talk (Post)}
Hello, i am trying to find a way how to open Dialogs on a Single Visu. The options from VU.Globals are Target and WebVisu, but Webvisu opens the Dialog on both WebVisus and it should be separated. CurrentVisu can only be used when the Dialog is called from the Visu, but its all done in the Code. One Webvisu is for the User and one is for diagnostic reasons, and they should not be interfered from each other. Maybe someone can help me with this. Thanks
Last updated: 2024-06-13

Post by rabaggett on No Visu on RasPi ^{CODESYS Forge talk (Post)}
Hello, I have been having trouble getting a visualization to show up on the RasPi. I have previously used both WAGO touchscreen and Windows ControlWin and had no trouble. The visu does not show on the Raspi screen on start of the program and attempts to view in a browser both on the Raspi (Chromium) and from my laptop (Brave,Chrome,Firefox) running Codesys development fail. The visu shows correctly in Codesys development when online. (Win 11) The control code that is active is operating correctly. Raspi Codesys runtime is licensed. What am I missing? Thanks!
Last updated: 2024-06-20

Post by shaun on GAMP 5 and 21 CFR Part 11 ^{CODESYS Forge talk (Post)}
Good day I have been asked to do a project. It is for a pharmaceutical application and data needs to be logged. The spec calls for the control system to comply with GAMP 5 and 21 CFR Part 11. From what I can find online it's got to do with electronic records and validation. Has anyone developed any software using this or are there codesys librarys that can make my life easier in writing this code
Last updated: 2025-10-22

Post by ben1 on How to stay in a method until something is finished. ^{CODESYS Forge talk (Post)}
Why must you use a method? Top of my head can't you just use the button to turn on a bit and use it in a normal task? Just turn a bit on with the button, and run a TON from it in code, and turn it back off with the ton. And then just log the pressure on both the rising & falling edge?
Last updated: 2025-11-03

Post by gatewail0 on Digital Clock ^{CODESYS Forge talk (Post)}
You can definitely pull the actual system time into CODESYS without too much trouble. Take a look at the SysTimeRtc or SysTime library—both let you read the current date and time from the Raspberry Pi. You can call SysTimeRtcGet() or SysTimeGetTime() in your PLC code and then format the hours, minutes, and seconds into variables that feed your 7-segment visualization. Once you’ve mapped those values, your Visu display will update automatically each cycle. It’s a pretty common approach for clocks in CODESYS, so you should be able to get it working quickly. golf hit
Last updated: 23 hours ago

Post by antonz on OSCAT Scale_r function not working in LD 4.60 works in LAD2 on 3.5.21sp3 ^{CODESYS Forge talk (Post)}
That's what I found as well Shaun. I have seen it at least in versions 3.5.21.1 and 3.5.21.3. There seems to be an issue with the FBD/LD package v4.6.0.0. The workaround proposed by Tim works but needs to be done manually on every code change/addition. For now we manually downgrade the FBD/LD package from v4.6.0.0 down to v4.5.0.0 after installation of CoDeSys. Same as you did. I hope this gets fixed on a next patch.
Last updated: 2025-11-21

Post by sturmghost on Initialization of visualization variables and cyclic code execution ^{CODESYS Forge talk (Post)}
I'm looking for a smart and short way to implement initialization of visualization variables depending on the visualization input. For an easy example consider a rectangle which rests at XPos := 0 when the input state is false and at XPos := 50 when the input state is true. My visualization variables look like this: VAR_IN_OUT State : BOOL; END_VAR VAR XPos : INT; END_VAR I put this rectangle via a visualization frame element into another visualization and link a frame reference variable with the state to it. If the variable is true, the rectangle should rest at XPos := 50 and false at XPos := 0 at visualization init but how should I assign the 50 or 0 to the internal visualization variable XPos? I would need some init-methode for the visualization but I dont want a global init-method for such tasks. I want to do it inside of the visualization element but I can't see any solution for this? It would be good to be able to define ST-code within the visualization element which runs cyclic at each VISU_TASK task-cycle then I could just check the input state and change the XPos accordingly. Does someone have a solution?
Last updated: 2023-10-01

Post by moksan on Unconnected_Send Explicit message with Route Path ^{CODESYS Forge talk (Post)}
I have been trying out Unconnected_Send Explicit Message with route path.(The Unconnected_Send service shall use the Connection Manager object in each router to forward the message and to remember the return path. Vol 1.3 / 3-5.6.7) However, I could not see the correct path on Wireshark. I want to see the Unconnected_Send Message Service Code as 0x52 and also the last of the message should have the route path. I want to ask some questions about this topic. The IIoDrvEIPAcylicServices Interface has the IoDrvSendUnconnectedMessage Method. And there is a struct (EIP_SendUnconnectedMessage) for this service. But there is no information about how to implement to project, and if it is successful, does it send a message with 0x52 Unconnected_Send Service Code or not? If that is not a solution, how can I set the Unconnected_Send Explicit Message struct on Codesys? Also how can I send explicit message with route path?
Last updated: 2023-10-17

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