Post by reinier-geers on Web client ^{CODESYS Forge talk (Post)}
Hi, ive got the webclient example. So now i want to use it. Ive got an example. but thats some JSON type. As far i know is JSONe som kind of structure. But thats new for me. I think its posible with get. Can someone help me? This is the link witch explains what to do https://reversed.notion.site/Marktprijzen-API-89ce600a88ac4abe8c2ad89d3167a83e i tried this : sURL : STRING(1024) := 'https://graphql.frankenergie.nl/get/ {"query":"query MarketPrices {\n marketPrices(date:\"2022-01-01\") {\n electricityPrices {\n from\n till\n marketPrice\n marketPriceTax\n sourcingMarkupPrice\n energyTaxPrice\n perUnit\n }\n gasPrices {\n from\n till\n marketPrice\n marketPriceTax\n sourcingMarkupPrice\n energyTaxPrice\n perUnit\n }\n }\n}\n"}'; // URL But thats a bad request
Last updated: 2025-10-08

Post by khaledkhalil on Import OPC UA model to Codesys ^{CODESYS Forge talk (Post)}
I have added a models in SiOME which a software to design nodes and add instances. and created a resultant xml file. I tried to import the xml file to Codesys through OPC UA information model Repository the problem i don't know how to view my objects which i have designed. and map it to my PLC to make viewable on my server UaExpert. I watched the tutorial video https://youtu.be/aJhzN3Uk-Do?feature=shared. But it only give you how to add the Information model, and my resultant model doesn't have information type. So how in Codesys i can view a model which i have designed in SiOME and mapped my instances (Objects, Variable or methods) with my Variables in PLC I saw people do it in Tia Portal or other Software, but i have no clue how to do it on CODESYS
Last updated: 2024-03-12

Post by francescoc on Logger in ms ^{CODESYS Forge talk (Post)}
Hi, I cannot find any documentation regarding the codesys configuration file. I modified this part to have log files saved to disk: [CmpLog] Logger.0.Name=LOGS/PlcLog Logger.0.Filter=0xFFFFFFFF Logger.0.Enable=1 Logger.0.MaxEntries=20000 Logger.0.MaxFileSize=5000 Logger.0.MaxFiles=10 Logger.0.Backend.0.ClassId=0x0000010B ;sends logger messages to SysOut Logger.0.Backend.1.ClassId=0x00000104 ;writes logger messages in a file Logger.0.Backend.2.ClassId=0x00000135 ;sends logger messages as UDP syslog Logger.0.Type=0x314;Set the timestamp to RTC ;Logger.1.Name=/tmp/CommLog ;Logger.1.Enable=1 I need to have milliseconds in the timestamp as well. What value should I use instead of 0x314? Is there any documentation regarding this file? Thank you
Last updated: 2024-03-16

Post by wollvieh on Raspi Pi Bullseye Webvisu Autostart ^{CODESYS Forge talk (Post)}
Anbei meine Lösung zum Autostart der Webvisu, vllt. hilft es jemandem... =============================== Raspberry Pi Bullseye 11 Autostart Codesys Webvisu im Kiosk Mode 1)Datei erstellen: sudo nano/etc/xdg/autostart/Visustart.desktop 2)Inhalt der Datei: [Desktop Entry] Type=Application Name=Visustart Exec=bash -c "sleep 30 && /home/pi/Desktop/Visu" 3)Visu Datei erstellen sudo nano /home/pi/Desktop/Visu 4) Inhalt der Datei: #!/bin/sh xset -dpms xset s off xset s noblank matchbox-window-manager -use_titlebar no & unclutter & chromium-browser -display=:0 --kiosk --incognito --window-positon=0,0 5) Datei ausführbar machen sudo chmod+x /home/pi/Desktop/Visu ... nach Neustart Raspi startet die Codesys Webvisu automatisch im Kiosk Mode ===============================
Last updated: 2024-03-24

Post by wollvieh on Raspi Pi Bullseye Webvisu Autostart ^{CODESYS Forge talk (Post)}
Anbei meine Lösung zum Autostart der Webvisu, vllt. hilft es jemandem... =============================== Raspberry Pi Bullseye 11 Autostart Codesys Webvisu im Kiosk Mode 1)Datei erstellen: sudo nano/etc/xdg/autostart/Visustart.desktop 2)Inhalt der Datei: [Desktop Entry] Type=Application Name=Visustart Exec=bash -c "sleep 30 && /home/pi/Desktop/Visu" 3)Visu Datei erstellen sudo nano /home/pi/Desktop/Visu 4) Inhalt der Datei: #!/bin/sh xset -dpms xset s off xset s noblank matchbox-window-manager -use_titlebar no & unclutter & chromium-browser -display=:0 --kiosk --incognito --window-positon=0,0 5) Datei ausführbar machen sudo chmod+x /home/pi/Desktop/Visu ... nach Neustart Raspi startet die Codesys Webvisu automatisch im Kiosk Mode ===============================
Last updated: 2024-03-24

Post by alexgooi on Modbus writing on value change ^{CODESYS Forge talk (Post)}
The way I usally tackle this is by syncing only words (then you are able to use the FB above). If you then want to write a Boolean simply type it like this. Value[1].0 := Bool1; Value[1].1 := Bool2; Value[1].2 := Bool3; Uints have the same number of bits than a INT/WORD so these ones will work as well (they are only represented diffrently). A Real will work but you will loose some infomration in the conversion. If you want to keep the information you can convert 2 words to a float with a function (for example with the IEEE-754 standard) . In this way the syncing to the server is very simple and in the Codesys Program you decide what part of the word you want to use.
Last updated: 2024-04-03

Post by esave on OPC UA Server with on Codesys + OPC UA Client on Labview ^{CODESYS Forge talk (Post)}
Hello everyone I want a communication between my PLC as an OPC UA Server and Labview on my PC as the OPC UA Client. I have an Festo CPX-E-CEC-C1-PN PLC and I have the OPC UA Toolkit from Labview. I created some Variables for testing (see picture 1) on Codesys. I tried to use this Labview block diagram (see picture 2) but I cant connect the PLC to it. What do I have to type in the Server Endpoint URL and what in the Node ID? Is this a good way for communication with a PLC to a PC? If not is there another way?
Last updated: 2024-04-12

Post by mondinmr on COL.IMap2 and HashTableFactory cause frequent Access Violation ^{CODESYS Forge talk (Post)}
Good morning, I’ve been using the Collection library for a long time, mostly with Stack, LinkedList, and List. From your examples I was able to manage the different factories, even for custom elements. Now I need a hashtable, but with this object I’m running into a lot of random access violations. If I append something inside FB_Init after constructing the hashtable, it crashes, even though the list was already created. If I only create the hashtable in FB_Init and append afterwards, it usually works. I don’t understand the meaning of the dispose call in this code: pSlave := ADR(slave); uSlave := TO_ULINT(pSlave); iKey := fKey.Create(uSlave); IF hash.CountKeys() = 0 THEN Service.logger.appendLog('Filling hashtable', 'HashManager', AdvLogType.AdvDebugMsg); ok := FALSE; ELSE eError := hash.ContainsKey(iKey, xResult => ok); END_IF IF NOT ok THEN pI := __NEW(UINT); iVal := fKey.Create(TO_ULINT(pI)); Service.logger.appendLog(CONCAT('New slave', TO_STRING(uSlave)), 'HashManager', AdvLogType.AdvDebugMsg); hash.AddKeyValuePair(iKey, iVal); appendNewSlave := pI; ELSE eError := hash.GetElementByKey(iKey, itfValue => iElem); xResult := __QUERYINTERFACE(iKey, itfIInstance); IF xResult THEN itfIInstance.Dispose(); END_IF IF eError <> COL.COLLECTION_ERROR.NO_ERROR THEN Service.logger.appendLog(CONCAT('ERROR ', TO_STRING(eError)), 'HashManager', AdvLogType.AdvCriticalMsg); appendNewSlave := nullptr; RETURN; END_IF __QUERYINTERFACE(iElem, iVal); {warning disable C0033} pI := TO___UXINT(iVal.UlintValue); {warning restore C0033} appendNewSlave := pI; END_IF Without the dispose call, every second cold reset crashes immediately when I try to access iVal, even if eError doesn’t report any error. With the dispose call, the cold reset issue disappears, but I get other problems: a) If I start the runtime using systemctl start codesyscontrol, it crashes at IF hash.CountKeys() = 0 THEN b) If I delete the files in PlcLogic and download again, it works and survives multiple cold resets. But as soon as I run systemctl restart codesyscontrol, everything gets corrupted again and it starts crashing at that point. FUNCTION_BLOCK SlaveMapCounter VAR hash : COL.IMap2; eError : COL.COLLECTION_ERROR; END_VAR In its FB_Init I create it: METHOD FB_Init: BOOL VAR_INPUT bInitRetains: BOOL; // TRUE: retain variables are initialized (reset warm / reset cold) bInCopyCode: BOOL; // TRUE: the instance will be copied to the copy code afterward (online change) END_VAR VAR hF : COL.HashTableFactory; END_VAR hash := hF.Create(256); In another FB I instantiate it statically: FUNCTION_BLOCK ABSTRACT AbstractServoEthercatController EXTENDS AbstractServoController VAR_STAT hashSlaves : SlaveMapCounter; END_VAR VAR field : REFERENCE TO ADVAbstractFieldUnitEthercatCia402; initCnt : REFERENCE TO UINT; END_VAR The append method is the one shown above, and I call it after the runtime has started. The accesses are performed by a single task, and in any case I’m working on an isolated single core. I’ve tried everything, moving the create, the instances, and all the rest several times, but nothing seems to work. I’d like to point out that these FBs are part of our own library, which is used in many applications.
Last updated: 2025-09-11

Post by docker on Canopen connection. Unknown node id. ^{CODESYS Forge talk (Post)}
hi, i am currently trying to adapt an i/o device for a project. the node id is unknown and there is no eds file available. no data is being emitted from the device as a giveaway, the baudrate is known but useless without the node id. is there an sdo request available to determine the id? i cannot get the device to leave pre op status even with a global nmt request. please help. no hair left.
Last updated: 2023-09-25

Post by timvh on Specify Input Configuration "OnDialogClosed" Action to only react to certain Dialogs ^{CODESYS Forge talk (Post)}
What maybe helps is the Visu Dialog ST demo project: https://store.codesys.com/en/visu-dialog-st.html This has an application IECOpenDialog where dialogs are opened using the VU.FbOpenDialogExtended function blocks. The fbOpenConfigurationDialog call has a reference (interface) to the "close listener" FB of which it's method is automatically called when the dialog is closed. This way you can create specific function blocks for each dialog when it is closed and do what you want with the data that might have been changed.
Last updated: 2023-09-28

Post by voffi on Converting UINT into bytes and converting 2Bytes into UINT ^{CODESYS Forge talk (Post)}
There are some ways. One is to use SHR and SHL and it depends on your byte order in the data array. For Motorola byte order: PROGRAM PLC_PRG VAR u : UINT; byte_array_in : ARRAY [1..8] OF BYTE := [16#11, 16#12, 16#13, 16#14, 16#15, 16#16, 16#17]; byte_array_out : ARRAY [1..8] OF BYTE; END_VAR u := SHL(TO_UINT(byte_array_in[2]), 8) + TO_UINT(byte_array_in[1]); byte_array_out[1] := TO_BYTE(u); byte_array_out[2] := TO_BYTE(SHR(u, 8)); If it's Intel byte order just change 1 and 2 in the array indexes.
Last updated: 2023-12-07

Post by liamb on Converting CANbus to Decimal from signed 2's complement ^{CODESYS Forge talk (Post)}
I need to combine two 8 bit CANbus messages to 16 bits signed int then convert to decimal Decimal from signed 2's complement. I've been using the below code to read for new messages, combine them then assign them to a variable What is the best way to do this for from signed 2's complement? fbRxMessage351(Data := RxMessage351Data); IF fbRxMessage351.NewMessage THEN ChargeVoltage := (WORD_TO_REAL((RxMessage351Data[0]) + ((RxMessage351Data[1]) * 256))) * 0.1; END_IF
Last updated: 2024-08-16

Post by egau on Mutate Hash table value ^{CODESYS Forge talk (Post)}
Hi, using the ElementCollections Library, why isn't it possible to mutate a value found within a HashTable? From what I understand, the only way to change a value would be to use the RemoveByKey(), followed by AddKeyValuePair(). My goal is to use a Data Structure that works like a Dictionary in Python. The HashTable seems to come close to this, except that the values themselves seem to be immutable... In python, we can mutate a dict easily (see attached picture).
Last updated: 2024-08-29

Post by docker on Webvisu client connection monitoring ^{CODESYS Forge talk (Post)}
Hi mate, With this snippet i was able to see the lastusage variable count, but it would not iterate between clients? i was only able to access the data of the target visu. it threw an error with the array of pointers stating it was not able to convert etc. also when i tried it with the while loop it created an endless loop and crashed the program. any ideas? Thankyou
Last updated: 2024-09-10

Post by mani-i4point0 on Codesys (Ethernet IP Scanner ) and Python (Ethernet IP Adapter) ^{CODESYS Forge talk (Post)}
Hi, I am currently developing the software to establish the communication and data transfer between Python Module as a Ethernet IP - Adapter coding is running my laptop and Codesys as a Ethernet IP scanner in the resperry PI hardware. I am trying to look for some available recourses online, Can anyone suggest me to develop this function in Codesys and Python ? Best Regards, Mani
Last updated: 2024-09-24

Post by andrebrandt on FB string and naming ^{CODESYS Forge talk (Post)}
Hi all. I have a FB written in ST. FUNCTION_BLOCK NTC10k VAR_INPUT Syst:STRING; In:REAL; END_VAR VAR_OUTPUT Out:REAL; OTag:STRING; Out_St:Struct_NTC10K; END_VAR VAR Tag:STRING; InstanceName: STRING; Structure:Struct_NTC10K; END_VAR What i'm trying to do, is to pass data to structure. In structure i want to add a tag with systemnumber and sensorname. '320.001-RT401' In pou i use this RT401: NTC10k;, and tried this RT401: NTC10k(Tag:='RT401'); Anyone done this?
Last updated: 2024-09-26

Post by ben1 on How to write multiple coils (Modbus FC15) ^{CODESYS Forge talk (Post)}
When you say it does not work, does nothing happen or do you get an error? I have not used this function in codesys but from my past experience with Modbus I believe the coils need to be contiguous, which may be why yours is failing? Have you tried using Write Registers (16) to do the job? Or is their data in-between you do not want to edit in the transaction?
Last updated: 2024-11-17

Post by mubeta on Profibus DP master with EL6731 and automatic restart of slaves ^{CODESYS Forge talk (Post)}
The problem is looking for a bug somewhere in CoDeSys in that, when the slave returns, the cyclic data exchange resumes, but the diagnostics do not update and the node continues to resulting off-line. it is not a problem with the PB master, but with its 3S/CoDeSys management. CoDeSys 3.5.19.20 runtime. Any ideas on how to fix it? Thank you.
Last updated: 2025-02-03

Post by trusty-squire on Which database to use? ^{CODESYS Forge talk (Post)}
How large and how complex? It's tough to make a recommendation without additional details. The simplest thing is to just use data arrays (or even arrays of arrays). Not knowing your requirements, it might be sufficient and the simplest option is often the best. https://content.helpme-codesys.com/en/CODESYS%20Development%20System/_cds_datatype_array.html You might also look into using Recipes? https://forge.codesys.com/prj/codesys-example/recipe-manageme/home/Home/ Some more complex options below. https://forge.codesys.com/prj/codesys-example/element-collect/home/Home/ https://store.codesys.com/en/mysql-library-sl.html
Last updated: 2025-03-04

Post by imdatatas on TO_STRING operator not working for IMPLICIT ENUM ^{CODESYS Forge talk (Post)}
Hi Everyone, It is a very useful feature to be able to obtain the enum value as a string with the TO_STRING operator by defining {attribute 'to_string'}. However, unfortunately the same function does not work for IMPLICIT ENUMs. I hope that {attribute 'to_string'} behavior can also work for Implicit Enumeration data types in one of the upcoming Codesys versions. https://content.helpme-codesys.com/en/CODESYS%20Development%20System/_cds_pragma_attribute_to_string.html https://content.helpme-codesys.com/en/CODESYS%20Development%20System/_cds_datatype_implicit_enumeration.html Best regards, Imdat
Last updated: 2025-03-27

Post by installwhat on Ethercat and profinet on together ^{CODESYS Forge talk (Post)}
I'm curious about the impact of having profinet and Ethercat (specifically softmotion so frame at start of task?) running together. Since it's advised to access the data from the bus task should have both profinet io and ethercat on the same task? Are there any implications around this one should be aware of especially since the frame at task start is just, so far as I'm aware, an ethercat thing? Thanks
Last updated: 2025-04-08

Post by romrot on MS SQL Compact cutting off Database name? ^{CODESYS Forge talk (Post)}
I'm trying to use an fbMsSQL_compact function to read data from an SQL database. It works with some databases, but there is one database that I can't seem to get it to work on. It's set up the same as the other databases that I've tested with the only difference I see is that the name of the database is cut off in the status message. I'll get a message like "User: User logged out succesfully from database: 12345" But the whole name of the database is something like 1234567.
Last updated: 2025-08-21

Post by tvm on VisuFbFrameBase.SetInputPositionData: The element id for the input position cannot be determined ^{CODESYS Forge talk (Post)}
I'm getting this error on one of my projects. Searching for it I came across this https://www.codesys.com/fileadmin/data/Images/System/Releaseinformation/Patch-Note-CODESYS-Visualization-4300.html which says it was a bug VIS-1394, fixed in Visualization 4.3.0.0. I'm using a previous visu version, what is the cause of this error, and what can be done to work around it?
Last updated: 2024-02-08

Post by wind-11 on Problem with simulation Modbus ^{CODESYS Forge talk (Post)}
Hello everyone, I encountered a problem in the simulation while working. In a test project we set up a Modbus connection. We wanted to simulate this with test values. The connection also worked, but unfortunately the values are frozen and do not report any “current data”. (Picture attached) Since these are my first points of contact with Codesys and my colleague continues to work elsewhere, I was hoping that someone here might have an idea. Kind regards and thanks in advance.
Last updated: 2024-03-22

Post by dagsupport on CAA SerialCOM - hCom Reset max value 1023 ^{CODESYS Forge talk (Post)}
Hi everybody We are currently working on a project with an RS232 serial COM interface and using the CAA SerialCOM library. We have it working fine reading and writing data, although we have found an issue we cannot resolve and any suggestions would be helpful. We have noticed that after a while the RS232 stops working. We have tracked this down to the HANDLE hCom keeps increasing and when this reaches 1023 the COM returns an unknown error "5003". Is there a way to reset this hCom reference? Thanks Richard
Last updated: 2024-03-22

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