Post by riccardo on Web Browser special tools errors ^{CODESYS Forge talk (Post)}
Nano goodmorning and thanks for the reaply, the links I have to manage are links as the following: https://192.168.1.101/u-os-app-codesys/application/visualization/webvisu.htm I saw that with Wikipedia or other web sites the tool works but not the link above. "google and some other providers, prevent from using as iframe and similar injections." The goal I'm pursuing is to display remote graphical user interfaces from a local graphical user interface over a local network. thanks in advance, Riccardo
Last updated: 2024-03-06

Post by gregorpl on Tosibox With EATON XV300 ^{CODESYS Forge talk (Post)}
HEllo, I need to connect with PLC XV300 , the problem is for me not simple. The PLC have remote control by Tosibox VPN tunel. I can see the screen from PLC, but i also want to se Input and Output the PLC . I try to scan the network by useing tosibox Gateway but its not working. Where i should looking the problem ? DO i need added special library ?
Last updated: 2024-03-12

Post by tama00 on Raspberry Pi 4 als SPI Slave ^{CODESYS Forge talk (Post)}
Hallo zusammen, grundsätzlich sollte ja die Möglichkeit bestehen den Raspberry auch als SPI Slave zu nutzen. Leider habe ich kein entsprechendes Projekt gefunden, bei dem dies der Fall war. Kann mir jemand dabei weiter helfen, wie ich bei Codesys Control for Raspberry , die Konfigurationen für den SPI Slave machen kann? Der Master soll ein Microkontroller sein von einem anderen Gerät sein. Ich arbeite noch mit 4.10.0.0 und einem Raspberry Pi 4 Vielen Dank und liebe Grüße
Last updated: 2024-03-19

Post by ofey on EtherCAT fieldbus ^{CODESYS Forge talk (Post)}
Okey, thank you! Do you think it is something in this library, that makes it possible to do the configuration in a PRG? https://content.helpme-codesys.com/en/libs/IODrvEtherCATDriver/Current/IoDrvEtherCAT.html#id1 I think the codesys modbus libraries support configuration and connection to modbus slaves without having to add the slave devices in the device tree. Just do it from function blocks inside the program. I was hoping for something similar with EtherCAT.
Last updated: 2024-04-10

Post by esave on Stepper Drive with Ethercat ^{CODESYS Forge talk (Post)}
I bought and installed SoftMotion Light now. When I try to add a SoftMotion Light Axis to my stepper drive and I go online it shows: "The license is missing or invalid". See picture What am I doing wrong? This is the right way right? First add your EtherCat XML-File from your stepper driver and then add the SoftMotion Light axis right? Thanks for your help esave
Last updated: 2024-04-25

Post by rabaggett on CODESYS control for Raspberry Pi 64 SL errors ^{CODESYS Forge talk (Post)}
Update: I started over. I saved progress at each step. all compiled zero errors, zero warnings. Pre-processor messages remain, but I can make progress. Until I try to re- load the project file in Codesys. Re-loaded files error as above when compiled, even though they compiled error-free immediately before saving. Is my installation borked? (Not easy to re-install due to IT madness...)
Last updated: 2024-05-03

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 micik on CAA File, how to check whether file exists or not ^{CODESYS Forge talk (Post)}
Hello, what would be the most efficient way to check whether the file exists or not. I don't want to use file.Open function, it seems like rather inefficiet operaton. I considered GetAttribute function, but this function doesn't accept filename (with path) as an input. Basically I need to check first time when program is loaded to the runtime i.e. when application is started for the first time, whether a file exists on the specific location or not.
Last updated: 2024-05-16

Post by yofi on Raspberry PI change tag only responds after stopping PLC ^{CODESYS Forge talk (Post)}
Using V19 Patch 7 and 4.11.0.0 for Pi 4 Model B, My problem is whenever I change a tag e.g bool from true to false it will change in software but the pin will only go high to low after pressing stop PLC in codesys and same if i want to bring it back to high, have to login start plc change it and stop plc in order to change. any insight ? thanks
Last updated: 2024-05-25

Post by svdpoint on Raspberry Pi Zero 2W with external Ethernet adapter ^{CODESYS Forge talk (Post)}
Hello all, Somebody try to run the CodeSys at RPi Zero 2W with external ETHx device? I need to more information how youi do it, what need to it, ...etc. It is interesting to use it together with EtherCat-interface. For example I had try to connect W5500 over SPI. The eth0 is present, but does not found any EtherCat IO-device. BR
Last updated: 2024-05-25

Post by yofi on Configuring an Encoder ^{CODESYS Forge talk (Post)}
I have a raspberry pi trying to add encoder to it using that free encoder node. I simply dont understand where the encoder channel A/B suppoded to be mapped when i got to I/O mapping on encoder I get nothing to where to set the channels for the encoder or is there any blocks from a library or how is it that you use an encoder with Codesys it doesn't seem clear at all
Last updated: 2024-05-25

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

Post by culius on Official MQTT-Client: MAX_RECEIVE_BUFFER_SIZE_EXCEEDED ^{CODESYS Forge talk (Post)}
Thank you very much for your reply. That helped, it is editable if the library is at root level. Unfortunately, I noticed that I am not using the MQTT client SL, but the AzureMQTTClient from the Azure IoT Hub Client SL library. At first glance, there is no parameter to increase the message size. Does anyone know how to increase this in the library or is it simply not possible here?
Last updated: 2024-06-08

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 alimans on High Cycle Times for SoftMotion_PlanningTask when using AxisGroup ^{CODESYS Forge talk (Post)}
Hi Manuknecht, Did you manage to solve the problem? I’m facing the same issue with Windows RTE SoftMotion — it works fine as long as nothing else is open in Windows, but as soon as I start another application, the EtherCAT DC time and max jitter values spike, and then all axes stop. I’ve already sent a support request to CODESYS, but haven’t received a response yet.
Last updated: 2025-10-23

Post by peder on Parker Compax3 controlled by Schneider LMC 201 ^{CODESYS Forge talk (Post)}
I have replaced a Parker PAC320 with a Schneider LMC 201 The system has some Parker Compax3 servodrive communicating over EtherCAT. PAC320 is programmed with Codesys 3.5.15. The program is opened in Machine Expert 3.2. But I can not get the commumication running to the Compax3. When I scan for hardware the it seems like the Compax3 is registated, but not the motors. Anyone that have succeded this replacement?
Last updated: 2026-01-13

Post by sheberle on ERROR: Calling the program "AlarmStorage_Prg" is not allowed from multiple tasks ^{CODESYS Forge talk (Post)}
Do you have any additional information about when the error occurs? I am trying to recreate this issue to find a workaround... Maybe you could also make the project available. You could add the following logfilter to the CODESYS configuration file: [CmpLog] Logger.0.Filter=0xFFFFFFFF Logger.0.Enable=1 Logger.0.MaxEntries=10000 Logger.0.MaxFileSize=1000000 SysSem.Filter=0xFFFFFFFF SysTask.Filter=0xFFFFFFFF I hope that the log filter will show us which task is responsible for this, so we can narrow it down a bit more.
Last updated: 2026-03-31

Post by winki on Error in licence activation ^{CODESYS Forge talk (Post)}
Hello, Despite receiving an activation message after entering the license number, I don’t have any license installed on my gateway. I went to check in /var/opt/codesys/ and there is no License file. I searched the entire gateway for a .lic file and found no license. I’m really stuck—how can I fix this, please? When I am using the licence tools I got this picture: But nothing that have been activated. Loic,
Last updated: 2026-02-03

Post by winki on Error in licence activation ^{CODESYS Forge talk (Post)}
Hello, Despite receiving an activation message after entering the license number, I don’t have any license installed on my gateway. I went to check in /var/opt/codesys/ and there is no License file. I searched the entire gateway for a .lic file and found no license. I’m really stuck—how can I fix this, please? When I am using the licence tools I got this picture: But nothing that have been activated. Loic,
Last updated: 2026-02-03

Post by zeljko2212 on Seeking a Code-Based Solution for EtherCAT Slave Dropout or Master Errors in Production (Beyond Software Hot Reset) ^{CODESYS Forge talk (Post)}
PROGRAM RES_ECAT VAR xMP1: INT; xRESTART: BOOL; xFinish: BOOL; xStop: BOOL; pSlave: POINTER TO ETCSlave; TP1 : TP; STS11: WORD; pSlave6: POINTER TO IoDrvEthercatDriverLib.ETCSlave; MP1: INT; TON1 : TON; xSTAT: BOOL; TP_1 :standard.TP; END_VAR TON1(IN:= NOT TON1.Q, PT:= T#300mS ); TP_1(IN:= ton1.Q, PT:= t#2s ); EtherCAT_Master.xRestart := xRESTART; EtherCAT_Master(); EtherCAT_Master(); xFinish := EtherCAT_Master.xConfigFinished; EtherCAT_Master.xStopBus := xSTOP; EtherCAT_Master(); pSlave := EtherCAT_Master.FirstSlave; WHILE pSlave <> 0 DO pSlave^(); IF pSlave^.wState = ETC_SLAVE_STATE.ETC_SLAVE_OPERATIONAL THEN xRESTART := FALSE; ELSE xRESTART := TP_1.Q; END_IF pSlave := pSlave^.NextInstance; END_WHILE
Last updated: 2026-02-14

Post by sahin6033 on DSE M840-001-02: DSEServiceTool transfers CodesysApp.pkg successfully, but device shows “No application loaded ^{CODESYS Forge talk (Post)}
Hi, I am trying to load a test application into a DSE M840-001-02 display, but after reboot the device still shows: “No application loaded” I would like to understand whether the problem is in my project, the package creation process, or firmware/runtime compatibility. Hardware Device: DSE M840-001-02 Firmware used: M840 MKII Firmware File v4.1.2 Software CODESYS V3.5 SP12 (32-bit) DSE CODESYS Package v1.5.44 DSEServiceTool What I did Created a new empty Standard Project Selected target/template: M840-02 V4.1 Used a minimal ST program only: PROGRAM PLC_PRG VAR xAlive : BOOL := TRUE; END_VAR Confirmed: project builds PLC_PRG is assigned to MainTask created Boot Application Generated CodesysApp.pkg Put the M840 into bootloader mode Sent the package using DSEServiceTool DSEServiceTool result Transfer completes successfully and I get: connection accepted 100% download package ACK <status>OK</status> ** Example log:** Searching for controllers.... sendPackageToController: waiting for incoming data connection... sendPackageToController: connection accepted... <status>Downloading</status> <percent>20</percent> <percent>40</percent> <percent>90</percent> <percent>100</percent> sendPackageToController: sent 112cb8 bytes OK Package ...\CodesysApp.pkg transferred to controller c0a80101 OK sendPackageToController: package ACK <status>OK</status> Actual result After reboot, the display still shows: “No application loaded” Additional issue I also saw earlier At one stage I also had these fatal errors in CODESYS: [FATAL ERROR] Unresolved reference: 'IOMGRLOCKENTER' [FATAL ERROR] Unresolved reference: 'IOMGRLOCKLEAVE' I checked library versions and adjusted them to: IoDrvBase = 3.5.5.0 IoStandard = 3.5.10.0 Also, I am using CODESYS SP12, which I understand is the correct version for DSE M840. My questions If DSEServiceTool shows Status OK and package ACK, but the device still says “No application loaded”, does that mean: the .pkg was transferred but not accepted as a valid application? the package was built incorrectly? the boot application / runtime / firmware versions are still mismatched? What is the correct procedure to generate CodesysApp.pkg for M840-02 V4.1? Is there any known compatibility issue between: DSE CODESYS Package 1.5.44 M840 MKII Firmware 4.1.2 CODESYS 3.5 SP12 Has anyone successfully loaded even a minimal empty test project into M840-001-02, and if so, what exact versions/process did you use? Any help would be appreciated.
Last updated: 2026-03-17

Post by tommyk-mar on Smooth path is not working with SMC_NCInterpreter ^{CODESYS Forge talk (Post)}
Hello, Im using SMC_NCInterpreter and SMC_NCReadFile2 to read gcode program for CNC machine and what I have observed is that G51 and G52 is not smoothing the path. Machine stops in every point, what could I do to make machine pass through the points without stopping or what could allow me to use smooth path corretly if I use NCInterpreter. Im using it because I want to add variables to my gcode and its not possible directly from the CNC editor thats why I do use external file. Any ideas?
Last updated: 2026-03-26

Post by nulltrace on How change Unity-ID in TCP Modbus Slave ^{CODESYS Forge talk (Post)}
Please explain how you configured that. Normaly, the Server should answer to all UID as long as gateway isn't activated. With activated gateway all UID will be forwarded to Serial-Interface, in taht case 255 has to be used for Gateway-Diagnostics. So that means, there is somethink wrong on your configuration. Which CDS-Version, Which Runtime-Version and so on are used.
Last updated: 2026-04-01

Post by jari-koivuluoma on Problem trying Net Base Services 3.5.15.0 TCP connection ^{CODESYS Forge talk (Post)}
I have a need to send messages between 2 PLCs and I cant use network variables (because of size limit) so I tried writing this simple test program. This seems to work fine. I can send messages back and forth when a first "Start server" and then "Connect client". See the attached image. However, if I disconnect the client by setting ClientConnect to false and try to re-connect then the TCP_Client just gives me TIMEOUT error. When I stop and start the server again, then Im able to reconnect. How is this supposed to work? Why reconnecting wont work. There is not other way of disconnecting the client than setting xEnable of the TCP_Client to false. This is just a testing program and I will try it on 2 seperate devices once this works. PROGRAM PLC_PRG VAR CONSTANT mySize : UDINT := 255; END_VAR VAR Server: NBS.TCP_Server; ServerIpStr: STRING := '127.0.0.1'; ServerIP: NBS.IP_ADDR; ServerPort: UINT := 50000; ServerConnection: NBS.TCP_Connection; Client: NBS.TCP_Client; ServerRead: NBS.TCP_Read; ServerWrite: NBS.TCP_Write; ServerSend: STRING(mySize); ServerReceive: STRING(mySize); ServerConnect: BOOL; bServerSend: BOOL; IP: NBS.INADDR; ConnectedClientIP: STRING; ClientPort: UINT := 50000; ClientIpStr: STRING := '192.168.1.49'; ClientIP: NBS.IP_ADDR; ClientRead: NBS.TCP_Read; ClientWrite: NBS.TCP_Write; ClientSend: STRING(mySize); ClientReceive: STRING(mySize); ClientConnect: BOOL; bClientSend: BOOL; Error: BOOL; Message: BOOL; END_VAR // Server ServerIP.sAddr := ServerIpStr; Server( ipAddr := ServerIP, uiPort := ServerPort ); ServerConnection( xEnable := Server.xEnable, hServer := Server.hServer, ); IP := ServerConnection.IPAddress; ConnectedClientIP := F_Concat7( BYTE_TO_STRING(IP.S_un_b.s_b1),'.', BYTE_TO_STRING(IP.S_un_b.s_b2),'.', BYTE_TO_STRING(IP.S_un_b.s_b3),'.', BYTE_TO_STRING(IP.S_un_b.s_b4)); ServerRead( xEnable := ServerConnection.xActive, hConnection := ServerConnection.hConnection, szSize := SIZEOF(ServerReceive), pData := ADR(ServerReceive) ); IF ServerRead.xReady AND ServerRead.szCount > 0 THEN Message := TRUE; END_IF IF ServerRead.eError > 0 THEN Error := TRUE; END_IF ServerWrite( xExecute := ServerConnection.xActive AND bServerSend, hConnection := ServerConnection.hConnection, szSize := LEN(ServerSend)+1, pData := ADR(ServerSend) ); IF ServerWrite.xDone THEN bServerSend := FALSE; END_IF IF ServerWrite.eError > 0 THEN Error := TRUE; END_IF // Client ClientIP.sAddr := ClientIpStr; Client( xEnable := ClientConnect, ipAddr := ClientIP, uiPort := ServerPort, udiTimeOut := 10000000 ); ClientRead( xEnable := Client.xActive, hConnection := Client.hConnection, szSize := SIZEOF(ClientReceive), pData := ADR(ClientReceive) ); IF ClientRead.xReady AND ClientRead.szCount > 0 THEN Message := TRUE; END_IF IF ClientRead.eError > 0 THEN Error := TRUE; END_IF ClientWrite( xExecute := Client.xActive AND bClientSend, hConnection := Client.hConnection, szSize := LEN(ClientSend)+1, pData := ADR(ClientSend) ); IF ClientWrite.xDone THEN bClientSend := FALSE; END_IF IF ClientWrite.eError > 0 THEN Error := TRUE; END_IF
Last updated: 2024-10-03

Post by janderson on OPC UA Server limitations, large array crashes runtime ^{CODESYS Forge talk (Post)}
What are the limitations of the OPC UA Server? I am trying to get data off my PLC that is acquired at high rates (~50k samples/s) so I am storing them in arrays and trying to get the arrays off the PLC. When I attempt to read a ~200k element array through OPC UA the server and runtime crashes (requiring tools -> update linux arm64 -> start runtime). Is there a better way to get highspeed data off? The ACDatalog library seems a bit irritating to use so I would prefer to go through OPC UA.
Last updated: 2023-08-23

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