Post by alexgooi on OPC-UA and other communication questions ^{CODESYS Forge talk (Post)}
Dear forum, I currently have a big question mark above my head, and maybe this forum can shine some light on the situation. I recently updated to Codesys 3.15 SP19 Patch 6. And now I’m trying to setup the OPC-UA server, besides that I’m trying to connect to the controller with the Codesys V3 (Ethernet) protocol. OPC-UA I have installed the correct licenses on my controller (Runtime and communication). I’m able to connect to the controller with an OPC-UA client, and I’m able to browse the tags, so far so good. Therefore I’m assuming that the OPC-UA server is running on the controller. But now the strange part, in the device security settings I have set the communication Policy to BASCI256SHA256 ( I also have tried the other ones) and the communication mode is set to secure if possible (I also have tried all the other ones) (see picture). With these settings I would assume that I would only be able to login with a Basic256SHA256 policy with a client. But the opposite is true, I am able to login using the no policy mode and when I set it to Basic256SHA256 the client (UA-Expert) notes that this policy is not available on the server. I then check the certificates and I noted that there is no certificate for the OPC-UA server, I tried to generate one but it gave the error that the certificate has not been created by the device (See picture). To summarize I have no clue what is going on, and the controller does the opposite of what I would expect. Codesys Ethernet V3 driver I have a HMI connected to the same controller using the Ethernet V3 driver. But this will not connect. I tried all the Protocols (see picture), with and without the username and password enabled. But it will not connect, when I scan the available servers I can see the controller with the port number that I am expecting, so I’m assuming that the Codesys V3 ethernet driver is up on the controller. Does anyone can give me some direction, because the stuff that I tried doesn’t make sense to me. Thank you in advance
Last updated: 2024-04-02

Post by i-campbell on Publish a JSON payload via MQTT Publish (using IIot Libraries) ^{CODESYS Forge talk (Post)}
your are sending as a WSTRING which is UTF16, but your receiver is interpriting as UTF8. Change the receiver to use UTF16, or better change your sender to convert to UTF8. You publish the entire storage space (SIZEOF) Instead of the number of bytes of actual text (StrLenA) try using utf8JsonData : STRING(2000); JSON.Stu.ConvertUTF16toUTF8( ADR(wsJsonData), ADR(utf8JsonData), SIZEOF(utf8JsonData) ); and change your publish to mqttPublish( mqttClient:=mqttClient, pbPayload:=ADR(utf8JsonData), udiPayloadSize:=To_UDINT(JSON.Stu.StrLenA(ADR(utr8JsonData))), wsTopicName:=topic, mQTTPublishProperties:=mqttPublishProperties );
Last updated: 2024-04-10

Post by eschwellinger on License problem gateway ^{CODESYS Forge talk (Post)}
please write to 'my question' in the CODESYS store.
Last updated: 2024-04-16

Post by eschwellinger on IoDrvModbusTCP_Diag not defined when using MODBUS ^{CODESYS Forge talk (Post)}
known issue hopefully solved to next version
Last updated: 2024-04-18

Post by eschwellinger on Problem with Licenced Software Metrics ^{CODESYS Forge talk (Post)}
possible to use 3.5SP20?
Last updated: 2024-04-22

Post by yongchaow on Can't connect to Device Raspberry Pi 4 from CODESYS IDE V3.5 SP19 ^{CODESYS Forge talk (Post)}
Hi, eschwellinger, I have the same problem, but I can not resolve the problem following this forum. There are my situation: pi@RevPiXXXX:~ $ uname -a Linux RevPiXXXX 5.10.120-rt70-v7l #1 SMP PREEMPT_RT Thu, 28 Jul 2022 10:36:48 +0200 armv7l GNU/Linux After "top": It looks like runtime is not running. One more piece of information to refer to, when I reboot the device it is possible to scan the device. Looking forward your reply.
Last updated: 2024-04-25

Post by timvh on JSON ^{CODESYS Forge talk (Post)}
I don't know the details of jsonArrayWriter, but the common behaviour for an xExecute input is that the FB starts on the trigger that it gets TRUE. In your case xExecute is never FALSE, so it is never triggered again to start the jsonArrayWriter. So change the condition from TRUE to a variable which you set to TRUE with the "xFirst". Then when the jsonArrayWriter is done (xDone), or has an error (xError), then set this variable to FALSE.
Last updated: 2024-05-01

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 william-blandon on RecipeManCommands.ReloadRecipes ^{CODESYS Forge talk (Post)}
Hello. I'm trying to use RecipeManCommands.ReloadRecipes Method for getting recipes from files. When I call the method it does not generate any error but also not reload any recipe to the recipe definition. Actually I have 6 recipe files on the directory PlcLogic. The rest of the methods work creating recipes, saving to file, etc. Does any one have the same issue? it is something to be set on the recipe manager?
Last updated: 2024-05-16

Post by paro on send appliaction files to wago plc (codesys 3.5) via ssh ^{CODESYS Forge talk (Post)}
Hi, it is enough to copy the files to /home/codesys/PlcLogic/Application and adding the lines [CmpApp] Application.1=Application to the eRUNTIME.cfg, if your Application in your program is also called "Application". Reboot -> Bootapp should be loaded. If not please check the log /var/log/runtime.log There should be a line which explains why the bootproject is not loaded.
Last updated: 2024-05-29

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 talhaali on Create an alarm list without use of Alarm config ^{CODESYS Forge talk (Post)}
Hi, I am trying to access active alarms in code(As alarm count variable updates only when we go to to alarm table frame in visualization). I wrote following code but it is not working: VAR iCountActiveAlarms : INT; parritfActiveAlarms : POINTER TO ARRAY[0..0] OF IAlarm; itfAlarmManagerClientAll : IAlarmManagerClient; END_VAR AlarmManager.g_AlarmHandler.GetActiveAlarms( itfAlarmManagerClient :=itfAlarmManagerClientAll, iCountActiveAlarms => iCountActiveAlarms, parritfActiveAlarms => parritfActiveAlarms); The Value is always 0. Please help.
Last updated: 2024-06-06

Post by talhaali on Create an alarm list without use of Alarm config ^{CODESYS Forge talk (Post)}
Hi, I am trying to access active alarms in code(As alarm count variable updates only when we go to to alarm table frame in visualization). I wrote following code but it is not working: VAR iCountActiveAlarms : INT; parritfActiveAlarms : POINTER TO ARRAY[0..0] OF IAlarm; itfAlarmManagerClientAll : IAlarmManagerClient; END_VAR AlarmManager.g_AlarmHandler.GetActiveAlarms( itfAlarmManagerClient :=itfAlarmManagerClientAll, iCountActiveAlarms => iCountActiveAlarms, parritfActiveAlarms => parritfActiveAlarms); The Value is always 0. Please help.
Last updated: 2024-06-06

Post by installwhat on C0077 on one machine but not another ^{CODESYS Forge talk (Post)}
https://forge.codesys.com/forge/talk/Engineering/thread/92c913bf7c/ Solved by changing the ethercat master version after reading the thread linked above. I think I need to read up on why this happened. I understand that placeholders should point to a particular version for obvious reasons however what has occurred in this instance is different. The example project was released as a "project archive" but it seems to load differently based on what I've got installed in my repositories. I'm going to dig into that tomorrow but any advice is welcome.
Last updated: 2024-06-11

Post by mozed on Windows 11 and SP17 ^{CODESYS Forge talk (Post)}
Try to use this version: https://store.codesys.com/de/codesys-installer.html
Last updated: 2024-06-12

Post by thieulam on Codesys access to DICTIONARY OBJECTS of ethercat (CoE ) Servo Drive ^{CODESYS Forge talk (Post)}
ok. tnx! best regards.
Last updated: 2024-06-19

Post by thieulam on Codesys access to DICTIONARY OBJECTS of ethercat (CoE ) Servo Drive ^{CODESYS Forge talk (Post)}
Last updated: 2024-06-19

Post by timvh on Toradex and CODESYS and licensing ^{CODESYS Forge talk (Post)}
For the Virtual Control you need to use a "Network license". The Virtual Control has parameters of which one is the reference to the license server. This can be the device itself, but you need to activate the license on the host system (not in the container). For this, CODESYS has a Network License server with WBM (web based management). See for the Network License configuration: https://content.helpme-codesys.com/en/CODESYS%20Control/_rtsl_license_controller_linux.html If it is only for evaluation, I would advise to use a CODESYS (USB) key and activate the license on the key. Then you still have to install the CODESYS Network License server on the host, but you don't have to activate the license as soft license on the device. The benefit is that you can easily move your license to another device when needed. Off course your device must have a free USB port available to be able to do this.
Last updated: 2025-10-20

Post by eschwellinger on Toradex and CODESYS and licensing ^{CODESYS Forge talk (Post)}
yes, need to be plugged.
Last updated: 2025-10-21

Post by timvh on Errors after moving from SP18 to SP20/21 ^{CODESYS Forge talk (Post)}
have you tried: VisuElems.VisuStructClientData ?
Last updated: 2025-10-22

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 dinesh-vamtec on SysProcessExecute ^{CODESYS Forge talk (Post)}
I'm trying to open the Help.chm file in CodeSys ST, not working.
Last updated: 2025-10-24

Post by kenth1973 on MC_Phasing state explenation ^{CODESYS Forge talk (Post)}
My MC_Phasing FB was stuck in iPhasingState=1 and error output HIGH on one axis. I could manually overwrite the state to 0 in the instance data. During normal run I see the state change from 0 to 10 to 100 back to 0 (maybe more states that I couldnt catch with the naked eye) But - what are the states numbers and their different explenations? This is not explained in the FB guide on codesys. (the pictures show state = 0 after I reset)
Last updated: 2025-11-22

Post by bertus on Can't get SMC_SmoothPath to work ^{CODESYS Forge talk (Post)}
Thanks. I will do more investigation and testing next week.
Last updated: 2026-01-02

Post by timvh on KeyPad Function in Visualization to fill a table ^{CODESYS Forge talk (Post)}
Create an array of STRING and 1 INT variable, e.g.: asMyString : ARRAY[0..9] OF STRING; iIndex : INT; Then place a "Table" object in the visualization: - link this to the string array variable. - Check the option "Use Template" - Then in the Input Configuration - add the "Write Variable" command Somewhere else add a "Combobox, array" - link this to the same array. - And link the index to the INT variable. In the Combobox, you can then select one of the strings from the array. The index variable will indicate which selection has been made.
Last updated: 2026-01-08

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