Post by kbazzett on "Sequent Microsystems" industrial automation hat raspberry pi ^{CODESYS Forge talk (Post)}
Here is a complete list of the Sequent Microsystems Pi hats that work in Codesys. https://github.com/SequentMicrosystems/SM_CODESYS/tree/main/ "For easy install download the .package file and open it on your computer, Codesys installer will know what to do with it." <- This. The Multi I/O Hat fit my needs because of the Analog I/O 4-20ma and RTD. I used a Raspberry Pi 5 and 64b install. The example project is also worth the download. With the sample project open, right click on the Raspberry Pi device and update to whatever you are using (SL, MC, 64b). Enable I2C on the PI. You can jumper the hats Analog Outputs to Inputs and see it function on the Web Visualization. Very Cool! I spent quite a bit of time trying to find this solution so hopefully this update helps others. Here is the video link on how to setup a Raspberry PI as a Codesys PLC https://youtu.be/RPoPscbo3Kc?si=Th4-n-mQ6g5fdHj8
Last updated: 2024-12-05

Post by ryusoup on JSONByteArrayWriter problem? ^{CODESYS Forge talk (Post)}
Hello, I am trying to implement a FB to make JSON formatted WSTRING type message using JSON Utilities 1.9.0.0 included in the IIoT library. In my case, I want to set some objects or arrays and set values to them later. But when I wrote as the sample below, // init builder builder(pJsonData:=pJsonData, diRootObj=>diRootObj); // set the 1st key to root diKey1 := builder.SetKeyWithArray(wsKey:="key1", diParentIndex:=diRootObj, eError=>eError); // set a value to the 1st key wsValue:="value01"; builder.SetValue(Value:=wsValue, diParentIndex:=diKey1, eError=>eError); // set the 2nd key to root diKey2 := builder.SetKeyWithArray(wsKey:="key2", diParentIndex:=diRootObj, eError=>eError); // set a value to the 2nd key wsValue:="value02"; builder.SetValue(Value:=wsValue, diParentIndex:=diKey2, eError=>eError); // set a value to the 1st key again wsValue:="value03"; builder.SetValue(Value:=wsValue, diParentIndex:=diKey1, eError=>eError); // set a value to the 2nd key again wsValue:="value04"; builder.SetValue(Value:=wsValue, diParentIndex:=diKey2, eError=>eError); // write build result writer(xExecute:=TRUE, pwData:=ADR(wsResult), udiSize:=SIZEOF(wsResult), xAsyncMode:=FALSE, jsonData:=pJsonData^); the result was: { "key1": ["value01"], "key2": ["value02", "value03", "value04"] } while my expection was: { "key1": ["value01", "value03"], "key2": ["value02", "value04"] } Inspecting pJsonData^, JSONData itself seems to be ok, so I believe the issue is something caused by the writer FB. Does anyone know how to fix it? Thanks,
Last updated: 2023-10-04

Post by dkugler on Project loses 'Download time' information ^{CODESYS Forge talk (Post)}
and if you copy or transfer a project to another place, copy not only the .project, copy .compileinfo .bootinfo and .bootinfo_guids then we figured out it is more often possible to go online without full download. If you build an archiv and extract it, some of this files are missing and login isn't possible without download. I work with V3.5 SP16 Patch 4. I don't know if this problem of the archiv is solved in newer Versions/SP's and I don't know what the problem of Codesys is to help out a lot of programers of this very annoying problem or at least help with a workaround
Last updated: 2025-09-18

Post by dasch on eCockpit - unable to start simulation ^{CODESYS Forge talk (Post)}
This is a known bug in e!Cockpit. See Release notes of V 1.11: 1 e!Cockpit Release Version 1.11 (2022-07) ATTENTION: If a library that uses asynchronous tasks (e.g. WagoAppConfigTool, WagoAppCloud or function modules such as Dali-Master) is dragged into the project, the simulation cannot be started. It is already sufficient to add the library to the project (an FB does not even have to be instantiated). I guess you are using one of these libraries/modules in your project. We e.G. often use PWM modules, these are also affected.
Last updated: 2023-09-05

Post by ph0010421 on General question about library versions ^{CODESYS Forge talk (Post)}
Hello I can't find anything to read on the subject so I'll ask here. Up to now, when adding a (for example) Modbus Master, I've selected the version <= the RT version, so if I'm using SP13 Patch 3, I can use a library that doesn't exceed this. I've no idea if this is correct, but it's always worked. Can someone explain the 4.x.x.x libraries that have appeared; are they tied to a RT version? The controller I use is now at SP18Patch60, so should I continue to use 3.5.xxx or change? thanks
Last updated: 2024-05-29

Unable to connect to this device ^{CODESYS Forge talk (Thread)}
Unable to connect to this device
Last updated: 2024-06-28

Cursor to move to a control ^{CODESYS Forge talk (Thread)}
Cursor to move to a control
Last updated: 2025-08-12

VAR_IN_OUT, POINTER TO and REFERENCE TO ^{CODESYS Forge talk (Thread)}
VAR_IN_OUT, POINTER TO and REFERENCE TO
Last updated: 2021-11-16

Post by jonathan1321351 on IO-Link write parameters Ethernet/IP ^{CODESYS Forge talk (Post)}
I want to read and write parameters of an IO-Link device using acyclic messages. I have a Cube67+ in Ethernet/IP, connected to an IO-Link master. In the datasheet, I can find the parameters required for the message (Service, Class, Instance, etc.). I see the function block "Set_attribute_single" in the "EthernetIP Services" library, but I'm not sure how to correctly send the index and sub-index for the IO-Link device. The class in the datasheet is 0x80 for the IO-Link Parameter Object, but it’s not present in the CPIClass enum. Is there another function block more suitable for configuring IO-Link devices? (similar to "iol_call" in PROFINET or what’s used in EtherCAT).
Last updated: 2024-09-02

Post by jonathan1321351 on IO-Link read/write parameters Ethernet/IP ^{CODESYS Forge talk (Post)}
I want to read and write parameters of an IO-Link device using acyclic messages. I have a Cube67+ in Ethernet/IP, connected to an IO-Link master. In the datasheet, I can find the parameters required for the message (Service, Class, Instance, etc.). I see the function block "Set_attribute_single" in the "EthernetIP Services" library, but I'm not sure how to correctly send the index and sub-index for the IO-Link device. The class in the datasheet is 0x80 for the IO-Link Parameter Object, but it’s not present in the CPIClass enum. Is there another function block more suitable for configuring IO-Link devices? (similar to "iol_call" in PROFINET or what’s used in EtherCAT).
Last updated: 2024-09-04

Post by garrian on How to write multiple coils (Modbus FC15) ^{CODESYS Forge talk (Post)}
Hi there! I'm testing out modbus TCP/IP for my home brewery, using Wago PFC200 as both slave and master. I'm using Wago library WagoAppPlcModbus. Holding registers, input registers' and discrete inputs works fine, but when trying to write multiple coils, it doesn't work. Any idea what I'm doing wrong here? Attached is a screenshot of my code. I tried both using bit mapping and without. If I change to FC05, and write only 1 coil at the time, it works fine. But I want to write all at the same time.. Any help is very appreciated :)
Last updated: 2024-11-16

Post by song on How to convert a standard robot program into an excutive list when a robot runs? ^{CODESYS Forge talk (Post)}
Dear Sir, I'd like to learn and try to make robot based on Codesys, is there a FB block or other ways to convert a standard robot program into an excutive list? how codesys explain the robot command instructions on HMI, just like the SMC_NCDecoder used to convert CNC program into a list of SMC_GEOINFO object. Thanks very much! Peter Yan
Last updated: 2023-11-25

Post by garrian on How to write multiple coils (Modbus FC15) ^{CODESYS Forge talk (Post)}
Thanks for your reply. I belive it is contiguous, I'm writing to adress 0 to 4. Or, do you mean something else? Well, something is happening. If I on the client set adress 1,2,3 to true, only 1 is set to true on the server side. On the client side, the data is array of word. But on the server side, the coils are array of bool. Holding register is array of word on server side. Can this be a problem? Attached screenshot of how it looks at the server side.
Last updated: 2024-11-17

Post by alex2 on How to uninstall SVN module ^{CODESYS Forge talk (Post)}
Hello, At work, I use Codesys V3.5 SP10. I wanted to run some tests with the SVN module, which I kept installed (without actually using it in the end). However, when I tried to launch Codesys today, I was informed that a license was missing. I suspect that this is due to the SVN module. Could you tell me how to uninstall it without launching Codesys? (as i cant proprerly start Codesys without the license) Thank you in advance.
Last updated: 2025-02-25

Post by trusty-squire on How can you get the active frame index from a frame ^{CODESYS Forge talk (Post)}
If you are switching a frame based on the "Switch Frame Variable", then just use a variable that is accessible to your program to set your active frame. If you're trying to see which is the active visualization, then use the "CurrentVisu" variable. Note you'll need to enable this by checking it on in the Visualization Manager settings. If it's neither of those, you'll need to be more clear on how you're project is set up.
Last updated: 2025-03-11

Post by niallel on How to change bHiresMode ^{CODESYS Forge talk (Post)}
Hi, I'm trying to get Scaling working on my axis. An increment produces 36.6mm of movement, so I want to put the units in application as 36.6. However the docs say that I need to change bHiresMode as it doesn't show me the option for Precision in the User Interface. I'm thinking that I need to change the precision so I can enter decimal places. How can I do this, or is my thinking wrong? Thanks,
Last updated: 2024-03-11

Post by kris-samoy on Get Alarm status in Codesys ^{CODESYS Forge talk (Post)}
I am rather new to Codesys and I'm trying to figure out how to get the status of an alarm. This to interlock the start of a device until the alarm has been acknowledged... I am not sure if IAlarm.GetState (METH) can be used for this purpose. If yes then could someone please briefly explain how to use this? https://content.helpme-codesys.com/en/libs/AlarmManager/4.1.0.0/Interfaces/pou-IAlarm/GetState.html Thx & grtz, Kris
Last updated: 2024-06-03

Post by transmin01 on SafetyApp - "Invalid ERR Ack input" ^{CODESYS Forge talk (Post)}
Hi, I am trying to get a basic safety application to download but I keep getting an "Invalid ERR Ack input" and "The Standard Inputs Size of zero is not allowed". I am simply using 2 safety inputs through an "AND" block to 2 safety outputs. Any help would be appreciated. Regards Trevor.
Last updated: 2023-09-27

Post by transmin01 on SafetyApp - "Invalid ERR Ack input" ^{CODESYS Forge talk (Post)}
Hi, I am trying to get a basic safety application to download but I keep getting an "Invalid ERR Ack input" and "The Standard Inputs Size of zero is not allowed". I am simply using 2 safety inputs through an "AND" block to 2 safety outputs. Any help would be appreciated. Regards Trevor.
Last updated: 2023-09-27

Post by dhumphries on Using Codesys example problems ^{CODESYS Forge talk (Post)}
You have to install any libraries needed by the sample program. Click the button with ... next to one of the errors (see attached image,) then choose download missing libraries. Codesys should automatically locate and install the missing libraries, it's not flawless though, I've had some issues getting libraries to install. The best advice I can give if it doesn't work is re-install Codesys.
Last updated: 2024-02-03

Post by fredsta on Unable to load dynamic modules (Download failed: Application=Application) ^{CODESYS Forge talk (Post)}
I'll have a look at this, thanks. Do you maybe know why the C-integration doesn't work? I'm just curious because it was still some effort to create all these files. Ending up with a meaningless error feels very unsatisfying to me...
Last updated: 2024-02-19

Post by namwind on Wago 8210 ^{CODESYS Forge talk (Post)}
Hi guys, I ran into problem with the controller is not saving the project into the internal memory. I was able to download the project to the controller, but as soon as I try to recycle the power it power back up with no project. I have not ran into this problem before. Please help me out thank you.
Last updated: 2024-03-02

Post by totorovic on Project loses 'Download time' information ^{CODESYS Forge talk (Post)}
Thank you for your answer. The build > Generate Code start the code of the application but does not modify the compileinfo. I work with .projectarchive to avoid this kind of problem. I would like to have the possibility to modify the compileinfo by myself so I can indicate the losses information.
Last updated: 2025-10-30

Post by squiggleypuff on RemoteTargetVisu creates Unresolved Reference ^{CODESYS Forge talk (Post)}
I have a project with a Festo CPX-E-CEC-C1-PN PLC (Run-time version 3.5.12.50) that I have been developing on just fine using Codesys V3.5 SP19 Patch 5 (64bit). I am at the stage where I wanted to use the Festo HMI screen, and have added a RemoteTargetVisu object to my application. After adding this object, I am no longer able to log in to the PLC as I get an Unresolved Reference warning for 'USERMGRUSERGETPROPERTY' towards the end of the download process. I was able to find this post (https://forge.codesys.com/forge/talk/Visualization/thread/fc686a6cb2/) where the two possible solutions are to "set the placeholder to emtpy" or update the runtime. Problem is, I don't know how to do either of these things, as I'm still very green in Codesys land. I'd be happy to update the Festo PLC runtime, as that seems like the better option, but have not had any luck in finding a tutorial for this online. If anyone could point me in the right direction I'd appreciate it.
Last updated: 2024-03-19

Post by rschwager on GVL to SHMem ^{CODESYS Forge talk (Post)}
Hallo! Have some any idea to transfer whole GVL to Shared Memory? I also shared REATIN memory to shraed meory for making a Retain Backup System without USP in Linux on a FRAM. For an other Application we want to shared the whole GVL off obne part (e.g. GVL_Test). How cvan I get easy the Size and the Address for meory copy?
Last updated: 2024-07-09

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