Post by mp9876 on Device logon problem following fresh install ^{CODESYS Forge talk (Post)}
All screenshots are enclosed in MS Word document. NOTE; 4 questions features at the end. Any assistance would be greatly appreciated! Hi everyone, I am still having device logon problem following a fresh install Here are the STEPS I went through following a FRESH CODESYS Win 64 3.5.19.60 install on a different computer. ‘Gateway not configured properly’ when attempting to REFRESH from the Users and Groups. Then did Gateway manage and confirmed it was ok: This message popped out as it was a fresh install: YES then: Initially went with Administrator twice (user & password) but it did not like it. No device is responding to …: Continued by setting a new user Pressed OK and obtained the following message: Stopped and Restarted PLC at that point: Obtained the following: Attempted to login a 2nd time without success. Then I scanned the network to see if matching device can be detected: Only way to get it detected was to remove the tick in the ‘Hide non-matching devices…’ Attempted a WINK but got a return like this one: REFRESH either @ Users and Groups or @ Access Rights returns: Then created user ‘mp’ at Project level ang logged in: Understandably device user mp9876 was not valid for the Project. Device information A few questions comes to my mind following these connection attempts: 1- Gateway not configured properly message pops out because of a non-compatible device ? 2- Why would the device not be compatible ? 3- Any way to make the device compatible ? 4- Any ideas on how to get this connectivity problem to the device solved ?
Last updated: 2024-03-17

Post by superjojo2002 on Licensing info not available. ^{CODESYS Forge talk (Post)}
I updated the docker container runtime to version 4.11.0.0. and build the container with this "Dockerfile" FROM arm64v8/debian:11.6 RUN apt-get update RUN apt-get install -y wget sudo unzip libusb-1.0-0-dev procps ENV CDS_VERSION "4.11.0.0" ENV EDGE_VERSION "4.11.0.0" ENV URL "https://store-archive.codesys.com/ftp_download/3S/LinuxARM64/2302000039/$CDS_VERSION/CODESYS%20Control%20for%20Linux%20ARM64%20SL%20$CDS_VERSION.package" ENV EDGE_URL "https://store-archive.codesys.com/ftp_download/3S/EdgeGatewayLinux/000120/$EDGE_VERSION/CODESYS%20Edge%20Gateway%20for%20Linux%20$EDGE_VERSION.package" RUN wget --output-document=/tmp/codesys.package $URL && \ unzip -p /tmp/codesys.package '*codemeter*.deb' > /tmp/codemeter.deb && dpkg -i /tmp/codemeter.deb && \ unzip -p /tmp/codesys.package '*codesyscontrol*.deb' > /tmp/codesys.deb && dpkg -i /tmp/codesys.deb RUN wget --output-document=/tmp/edge.package $EDGE_URL && \ unzip -p /tmp/edge.package '*arm64.deb' > /tmp/edge.deb && dpkg -i /tmp/edge.deb EXPOSE 11740 1217 11743 ENTRYPOINT ["/bin/sh", "-c" , "/etc/init.d/codemeter start && /etc/init.d/codemeter-webadmin start && /etc/init.d/codesyscontrol start && /etc/init.d/codesysedge start && tail -f /dev/null"] Now cmu -x" returns root@sensoredge-field-netfield-produktmanagment:/# cmu -x cmu - CodeMeter Universal Support Tool. Version 8.00 of 2023-Nov-28 (Build 5967) for Linux/ARMHF 64-Bit Copyright (C) 2007-2023 by WIBU-SYSTEMS AG. All rights reserved. But still CODESYS development system reports that it needs a dongle and when I click install that "value cannot be null. Parameter name: containerToLicenses" It seems that Codemeter is forced to look for a dongle instead of a CMsoftcontainer. Can you confirm that CODESYS licensing works also when CODESYS is installed in a Docker container?
Last updated: 2024-03-21

Post by jasonhogan on Login problem with FileTransfer on Raspberry Pi 5 ^{CODESYS Forge talk (Post)}
That’s a classic CODESYS quirk. As soon as you enable AllowFileTransferServices=1, the web server locks down and demands authentication for everything, including WebVisu sessions. Since you're on a Raspberry Pi / Linux, trying to make the built-in CODESYS web server do both secure file handling and unauthenticated kiosk visu is usually a losing battle. A couple of ways to get around this: The cleaner route (separate the jobs): Turn AllowFileTransferServices back off in the config so your kiosk WebVisu opens freely without any login prompts. Then, handle the file download outside of CODESYS — just run a dead-simple Nginx/lighttpd file server or a tiny Python script on the Pi pointed at your export folder (/var/opt/codesys/...). That way your PLC security stays intact, and the kiosk screen just works. If you really want it through CODESYS: Check your Device -> Users and Groups in the IDE. Make sure the Everyone / Anonymous user group actually has explicit view permissions checked for the Visualization. Sometimes when file services are toggled, anonymous users lose the default visu-read rights and get booted straight to the login dialog. URL / Browser trick for kiosk: If the Pi is just opening a local browser on startup, you can sometimes pass the basic credentials in the browser launch script or use a small reverse proxy on localhost to inject the headers automatically so you don't see the popup. Honestly, running a lightweight HTTP/FTP endpoint on Linux (option 1) is by far the least headache.
Last updated: 2026-08-15

Post by lzml on HTML5 visualization controls disabled on CODESYS Control for Linux SL - overlay not supported? ^{CODESYS Forge talk (Post)}
Hello, I'm developing a custom HTML5 visualization control (via the HTML5 Control Editor / Tools > Visualization Element Repository) and I'm running into what looks like a target-device limitation when trying to deploy it to CODESYS Control for Linux SL. I'd like to understand whether this is a known/expected limitation or something in my setup. Environment - CODESYS Development System: V3.5.22.0 - Target runtime: CODESYS Control for Linux SL, package version 4.15.0.0 (installed together with CODESYS Edge Gateway for Linux 4.15.0.0) - Visu system libraries (VisuElems, VisuElemsAlarm, VisuInputs, VisuNativeControl, etc.): version 4.7.0.0 - Host OS: Debian RT (minimal/base installation) - We only use WebVisu, not TargetVisu. What I did 1. Built a custom HTML5 control following the official HTML5-API-Examples pattern (.html5control.xml manifest + ElementWrapper.js + CSS), installed it successfully via the HTML5 Control Editor ("Save and Install") into the Visualization Element Repository. 2. In the Visualization Manager, enabled "Support client animations and overlay of native elements" (documented as required for HTML5 controls to work at all). 3. With the project's Device set to CODESYS Control for Linux SL, compiling/downloading fails with: "Overlay is not supported for your target visualization device." (Visualization Manager) Build stops with 1 error, download not possible. Isolating the cause - The Visualization Element Repository confirms the control is correctly installed. - With the project Device set to a Windows-based device, the HTML5 control appears and is enabled in the Toolbox as expected. - With the project Device set to CODESYS Control for Linux SL, the HTML5 control is disabled/missing from the Toolbox entirely, even though it's installed in the repository. This points to the Linux SL device description simply not declaring overlay/HTML5 support, rather than a missing package or Debian-side dependency (WebVisu itself already works fine for standard/native visualization elements on this same target). Questions 1. Does CODESYS Control for Linux SL currently support WebVisu overlay (and therefore custom HTML5 controls)? I found documentation stating overlay support for target visualizations (Windows and Linux) was added starting with CODESYS Development System V3.5.17.0, but that seems to refer to TargetVisu, and our case is WebVisu-only on a Linux runtime. 2. If not currently supported, is this on a roadmap, or is there a different Linux runtime package/edition that does support WebVisu overlay for HTML5 controls? 3. Is there any Linux-side configuration or package needed to enable this (given the check appears to happen against a static device capability declaration rather than a live server check), or is this purely a matter of the device description bundled with the current Control for Linux SL package? Thanks in advance for any pointers.
Last updated: 2026-08-05

Post by struccc on Application failing to boot after system reboot ^{CODESYS Forge talk (Post)}
I started to experience the same issue, after upgrading to 3.5.19 , and still persists with 3.5.20.3 , using CodesysControlWinV3 x64 on Windows. Unfortunately, this is a live application, normally it is running for months without interruption - so it was a surprise at the last cold start... It was not possible to go online with the original version, so I couldn't see the application, or system status, just the log message. First time I manually clean the Application from the PlcLogic directory (there was no coredump file in there), then I could start the runtime service, and do a fresh download, and set the bootproject. I could not try a cold system reboot - it's in a 24/7 production environment, and I was under heavy pressure to start... What I did, I have created a backup from the * complete * runtime directory, from the failed, and fixed version - before and after download. This directory in my case C:\ProgramData\CODESYS\CODESYSControlWinV3x64\55096128 - At the next shutdown, it was sufficient to copy back this backup completely, and could start the runtime service afterwards. Ugly, but local staff with some skills can do it without programming tool... I don't store any live data, configuration, log files, persistent data in this directory - the only reason I need this is to edit the CodesysControl... .cfg file.... And to see the logfiles in emergencies like this. The application concerned doesn't use any retain area. - exactly for these reasons - Maybe that is causing the problem with the newer runtime versions As far as I see, this problem occurs only if the power of the Windows PLC is interrupted without a proper shutdown. Unfortunately, this can happen sometimes. The newer versions, seems tp modify CodesysControl.cfg on the fly, and register the applications, and bootproject information after download. (I don't really see CodesysControl.cfg a proper location for this... but that's just my feeling) So now I had a look at CodesysCotrol.cfg on my laptop and I found: [CmpRetain] ;Retain.SRAM.Size=0x200200 ;Retain.SRAM.Address=0xFA3C5776 ;SimulateSRAM=1 [CmpApp] ;Bootproject.CreateOnDownload=0 ;Bootproject.StoreOnlyOnDownload=0 ;Bootproject.InvalidateByRename=1 ;Bootproject.InvalidateBySetting=1 ;Bootproject.InvalidateNever=0 ;PersistentForce=0 ;RetainType.Applications=InSRAM ;RetainType.Applications=OnPowerfail ;RetainType.Applications=None ;Exception.Hardware.GlobalStop=1 Application.1=MyTestAppNoRetain The last line appeared after download and boot project creation. Maybe... Should set RetainType.Applications=None? I wonder about all these settings, but... Will write separately about it. I hope this helps a little...
Last updated: 2024-11-21

Post by pra83 on CODESYS SoftRedundancy — Both PLCs stay standalone after network interruption — Auto recovery not working ^{CODESYS Forge talk (Post)}
Hello, We are facing a critical issue with CODESYS SoftRedundancy that we have been unable to resolve despite extensive troubleshooting. HARDWARE: 2× HP EliteDesk 800 G9 SFF Intel Core i7-14700 (20 cores) 16GB RAM, 512GB NVMe SSD Windows 11 IoT Enterprise LTSC 2024 NIC1: Built-in Intel GbE NIC2: Intel I210-T1 PCIe (NIC team) SOFTWARE: CODESYS Control Win V3 - x64 Version 3.5.22.10 CODESYS SoftRedundancy SL Server 1 IP: 172.10.10.101 (PLC1 — Active) Server 2 IP: 172.10.10.102 (PLC2 — Standby) CURRENT CODESYSControl.cfg: [CmpRedundancy] BootupWaitTime=120000 StandbyWaitTime=12100 SynchronousTimeout=12100 [CmpSchedule] ProcessorLoad.Maximum=80 WatchdogTime=12000 WatchdogTimeoutAction=0 CONFIRMED WORKING: PLC1/PLC2 identification configured via IDE Connection IP configured via IDE AutoSync enabled and written via IDE Normal Active/Standby operation working Server 2 auto-promotes when Server 1 completely fails PROBLEM DESCRIPTION: When NIC1 cable is removed from Server 1 — both servers go to standalone mode. When NIC1 cable is reconnected — both servers remain in standalone indefinitely. Neither server auto-recovers to Active/Standby without manual CODESYS service restart. AutoSync fires (!!! Autosync !!! visible in log) but recovery does not complete. Tested with direct cable (no NIC team) — same result. Confirmed not a hardware or NIC teaming issue. KEY LOG MESSAGES: "Timeout: No sync message RMSG_StartCycle (5) from master: Standalone" "Socket on other side closed gracefully 0" "Standby PLC: Open acyclic work socket failed" "Connection broke after 11806ms. Check BootupWaitTime." Autosync(fires but does not complete recovery) PCAP ANALYSIS (Wireshark): CODESYS sync stops completely at T+3s Server 1 sends TCP FIN on ports 1206 and 1208 at T+5s No CODESYS redundancy traffic for remaining 24 seconds Both servers stay standalone indefinitely WHAT WE HAVE TRIED: StandbyWaitTime = 12100ms SynchronousTimeout = 12100ms WatchdogTime = 12000ms (less than StandbyWaitTime) AutoSync enabled NIC2 set as Standby adapter Disabled Windows Network Discovery Direct cable test — rules out NIC hardware QUESTION: Per official CODESYS documentation: "No automatic Reconnect is included in the functional scope of the redundancy components. You can program the triggering of a reconnect." Is RDCY.Synchronize() the correct function to add to our application for automatic recovery after both PLCs go standalone? What is preventing auto-recovery when AutoSync is enabled and PlcIdent is correctly set? Thank you for your support.
Last updated: 2026-05-02

Post by winki on ModbusFB ClientRequest: never recovers after a single ReplyTimeout (requires full download) ^{CODESYS Forge talk (Post)}
Library: ModbusFB (CODESYS Modbus package) IDE / Runtime: CODESYS V3.5 SP___ / Control runtime ___ Target: ___ (e.g. gateway, Linux ARM64 / Debian) Slave: Modbus TCP inverter Summary I poll a Modbus TCP slave with a permanent connection: one ClientTCP (kept connected, xConnect:=TRUE) and one ClientRequestReadHoldingRegisters, triggered cyclically. Everything works fine after a fresh application download. But as soon as one single ReplyTimeout occurs (slave temporarily not answering), the request never recovers. It stays stuck and no further messages are sent, even though the TCP connection is still reported as alive. Only a full application download brings it back — an online change or a runtime reset is not enough / not what I want in production. State observed when stuck So the connection is alive, the request finished in ReplyTimeout, the FB is back to _state = None, but udiNumMsgSent no longer increases — as if a new rising edge on xExecute is no longer accepted / no longer produces a new message. My trigger logic (simplified) Each PLC cycle, in this order: If the request is fully at rest (NOT xExecute AND NOT xBusy AND NOT xDone AND NOT xError) and a read is pending, I set xExecute := TRUE. I call clientTcp() then clientRequest(rClient := clientTcp) once each, per cycle. On xDone or xError, I set xExecute := FALSE. I made sure to insert at least one full cycle with xExecute = FALSE (seen by the FB call) before re-triggering, so the falling edge is processed. Questions After a ReplyTimeout (xError = TRUE), what is the exact, correct sequence to re-trigger the same ClientRequest so a new message is actually sent again? Is a full cycle with xExecute = FALSE between two executions mandatory? Is there a known condition where, after ReplyTimeout, the ClientTCP keeps xConnected = TRUE but silently stops sending new requests (e.g. an internal request queue / _udiRequestId that gets out of sync)? udiNumMsgSent freezing at 23 while the FB shows _state = None is what puzzles me. Is the recommended pattern to drop the connection (ClientTCP.xConnect := FALSE for one cycle, then TRUE) on a request error, rather than keeping it alive? The docs state a request error does not close the connection, so I kept it open — but maybe that is the issue here. Could the large uiStartItem (50514) be relevant? It works right after download, so addressing seems correct, but I want to rule it out. Any guidance on the canonical recovery pattern after a request timeout would be greatly appreciated. Thanks!
Last updated: 2026-06-19

Post by alexschooneveld on OPC UA PubSub SL 1.3 — UADP WriterGroup with assigned PSS.SecurityGroup still publishes plaintext ^{CODESYS Forge talk (Post)}
I am currently investigating an OPC UA PubSub connection over UDP. When I don't use encryption, the publish and subscribe are working correctly. But with encryption it does not. Environment OPC UA PubSub SL 1.3.0.0 (namespace UADP) OPC UA PubSub Security 1.3.0.0 (namespace PSS) OPC UA PubSub Base 1.3.0.0 (namespace PSB, incl. PSS.SecurityGroup / PSS.CONFIG) Programmatic PubSub in a CFC: UADP.Configuration → UADP.Connection → UADP.writerGroup → UADP.writer → writerDataSet, plus a CyclicCall gated by xEnable. Goal: publish secured UADP, SignAndEncrypt, policy PubSub-Aes256-CTR. What I do (one-shot, before xEnable := TRUE): fbSecurityGroup.SetInitialValue( 'http://opcfoundation.org/UA/SecurityPolicy#PubSub-Aes256-CTR', PSB.SECURITY.SIGNING_AND_ENCRYPTION); stSecurityCfg := fbSecurityGroup.GetConfig(eErrorID => eError); // eError=NO_ERROR, udiEncryptionKeySize=32 eError := fbSecurityGroup.SetSecurityKeys(udiTokenId, ADR(abyKey), SIZEOF(abyKey), 2436001000); // eError=NO_ERROR, SIZEOF=68 // writerGroup.itfSecurityGroup := fbSecurityGroup -- set in the WriterGroup block's Parameters (a per-scan code write got overwritten) What I verified eError = NO_ERROR after both GetConfig and SetSecurityKeys; udiEncryptionKeySize = 32. Key length = 68 bytes (signing 32 ‖ encrypt 32 ‖ nonce 4). itfSecurityGroup is set via the WriterGroup's Parameters (so it isn't clobbered each scan). Init runs before xEnable (the writer doesn't run with xEnable=FALSE). The UADP.writerGroup FB exposes only itfSecurityGroup for security — no SecurityMode/MessageSecurityMode property. Result: the published datagrams are still plaintext — ExtendedFlags1 = 0x01 (security bit 0x10 clear), no security header: b1 01 29 00 0f 16 00 … (PublisherId 41, WriterGroupId 22, RawData, no security) Questions With UADP.writerGroup, is assigning a configured + keyed PSS.SecurityGroup to itfSecurityGroup sufficient to enable message security, or is there an additional step/property/method to switch the WriterGroup to SignAndEncrypt? At what point in the WriterGroup lifecycle is itfSecurityGroup read? Must it be assigned/keyed before xActive, and does the group need a stop→start to pick it up? Is there a required call order, and does SetSecurityKeys need to be called once or repeatedly? Should security be configured on the Connection/Configuration level rather than (or in addition to) the WriterGroup? Is there a working example of secured (SignAndEncrypt) programmatic UADP publishing with this library, or a known limitation in 1.3? How can I read back at runtime whether security is actually active (via itfDiagnostics or similar)? Additional information I can confirm that the consumer side works — i.e. a standard subscriber decrypts the same keys fine — so the keys/profile aren't the issue. The Wireshark capture of the published message is: 0000 b1 01 29 00 0f 16 00 df 0d bb 25 01 00 0e 00 1b ..).......%..... 0010 0e 00 00 00 00 00 00 00 ........
Last updated: 2026-06-22

Post by alexschooneveld on OPC UA PubSub SL 1.3 — UADP WriterGroup with assigned PSS.SecurityGroup still publishes plaintext ^{CODESYS Forge talk (Post)}
I am currently investigating an OPC UA PubSub connection over UDP. When I don't use encryption, the publish and subscribe are working correctly. But with encryption it does not. Environment OPC UA PubSub SL 1.3.0.0 (namespace UADP) OPC UA PubSub Security 1.3.0.0 (namespace PSS) OPC UA PubSub Base 1.3.0.0 (namespace PSB, incl. PSS.SecurityGroup / PSS.CONFIG) Programmatic PubSub in a CFC: UADP.Configuration → UADP.Connection → UADP.writerGroup → UADP.writer → writerDataSet, plus a CyclicCall gated by xEnable. Goal: publish secured UADP, SignAndEncrypt, policy PubSub-Aes256-CTR. What I do (one-shot, before xEnable := TRUE): fbSecurityGroup.SetInitialValue( 'http://opcfoundation.org/UA/SecurityPolicy#PubSub-Aes256-CTR', PSB.SECURITY.SIGNING_AND_ENCRYPTION); stSecurityCfg := fbSecurityGroup.GetConfig(eErrorID => eError); // eError=NO_ERROR, udiEncryptionKeySize=32 eError := fbSecurityGroup.SetSecurityKeys(udiTokenId, ADR(abyKey), SIZEOF(abyKey), 2436001000); // eError=NO_ERROR, SIZEOF=68 // writerGroup.itfSecurityGroup := fbSecurityGroup -- set in the WriterGroup block's Parameters (a per-scan code write got overwritten) What I verified eError = NO_ERROR after both GetConfig and SetSecurityKeys; udiEncryptionKeySize = 32. Key length = 68 bytes (signing 32 ‖ encrypt 32 ‖ nonce 4). itfSecurityGroup is set via the WriterGroup's Parameters (so it isn't clobbered each scan). Init runs before xEnable (the writer doesn't run with xEnable=FALSE). The UADP.writerGroup FB exposes only itfSecurityGroup for security — no SecurityMode/MessageSecurityMode property. Result: the published datagrams are still plaintext — ExtendedFlags1 = 0x01 (security bit 0x10 clear), no security header: b1 01 29 00 0f 16 00 … (PublisherId 41, WriterGroupId 22, RawData, no security) Questions With UADP.writerGroup, is assigning a configured + keyed PSS.SecurityGroup to itfSecurityGroup sufficient to enable message security, or is there an additional step/property/method to switch the WriterGroup to SignAndEncrypt? At what point in the WriterGroup lifecycle is itfSecurityGroup read? Must it be assigned/keyed before xActive, and does the group need a stop→start to pick it up? Is there a required call order, and does SetSecurityKeys need to be called once or repeatedly? Should security be configured on the Connection/Configuration level rather than (or in addition to) the WriterGroup? Is there a working example of secured (SignAndEncrypt) programmatic UADP publishing with this library, or a known limitation in 1.3? How can I read back at runtime whether security is actually active (via itfDiagnostics or similar)? Additional information I can confirm that the consumer side works — i.e. a standard subscriber decrypts the same keys fine — so the keys/profile aren't the issue. The Wireshark capture of the published message is: 0000 b1 01 29 00 0f 16 00 df 0d bb 25 01 00 0e 00 1b ..).......%..... 0010 0e 00 00 00 00 00 00 00 ........
Last updated: 2026-06-22

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Last updated: 2024-10-26

Post by garyl on Comments in arrays and assigning RST coil's to 600 outputs ^{CODESYS Forge talk (Post)}
Hello all, im working on a project that requires me to convert an old automation direct DirectSoft PLC d2-250-1. One of the problems im encountering is that all of the comments are attached to members of the different addresses. When i convert the addresses (1777 "C" registers, 777 X registers, and 20,0000 V registers) im running into difficulties keeping the inputs/outputs correct since they are missing documentation. Is there a good way to retain the comments of the indexes in the array? Secondly, initially i was declaring the "C" and "V" addresses individually and this worked to retain the comments as to which register did what, however i ran into a problem when one rung reset (or set to 0) approximately 600 C Addresses. Since each tag is separately declared this proved to be nearly impossible without a literal wall of code that attempted to crash the program. So i converted all of the registers (C,X,Y,V) into separate structs, declared them as arrays and pointed all of the original call outs in the program to the newly defined structs. However i have now lost comments and the program is very hard to follow. Thanks for any help with this issue.
Last updated: 2023-08-31

Post by ryandmg on Web Client (HMI) Disconnects from Webvisu (Weidmuller u-OS) ^{CODESYS Forge talk (Post)}
Thanks So Much for the reply! Were using the Weidmuller UV66-ADV-10-CAP-W The HMI is pointed to the URL which is assigned through u-OS. Basically when you log into the controller's webserver via browser you can view the installed apps. One of which is the Codesys runtime. When you click on that it takes you to the visualization. That corresponding url is what the HMI is looking for. I apologize I don't have that on hand as I'm in the office right now. I don't think I tried connecting using the port you mentioned and https in lieu of the u_OS URL. I can certainly try. Out of the box the u-OS is set for HTTP. Since we're isolated I havent changed that yet. When this has happened while logged on via chrome on my laptop, simply refreshing brings the visualization right back. In the case of the HMI in kiosk mode, we power cycle the HMI to force a reconnect, log back in u-OS and the visualization is back.
Last updated: 2023-09-06

Post by captaincookie on increase default string length in queue ^{CODESYS Forge talk (Post)}
Hello, I'm using Codesys V3.5 SP18 Patch 4. In the ElementCollectionExample Project from Codesys, I test the SimpleQueueExample in a Control Win V3 x64 environment. I try to add a string of 95 characters length to a queue. The default length of strings is defined as 80 characters. In the initialization of a string variable, it is possible to increase the length by the definition of e.g. STRING(1000). But when I write the string defined like this to the queue, only 80 characters are written to it and the rest is missing. I think the default length is still set in the queue definition, so it is necessary to change this, isn't it? Is there any option to increase the default length of strings in the queue? Attached you can find the used project. Thanks in advance. If any information are missing or my description unclear please let me know.
Last updated: 2023-10-05

Post by manuknecht on Persistence Manager does not save alphabetically first value ^{CODESYS Forge talk (Post)}
I have several libraries which contain values that should be saved on a PLC. As apparently no Persistent Variable List is available within Libraries, I use the Persistence Manager to create a Persistence Channel in the Project which imports the library. I then specify the persistence channel in the library using the {attribute 'ac_persist':='PersistenceChannel_CT'} specifier. This generally works very well and gives me exactly the properties I require. However, it came to my attention that the (alphabetially) first value from the library is not saved in the created ASCII file. When checking the content of the Persistence Channel, it shows all the variables as defined in the library. But the created file does not contain the first value and it is not restored after restart or reset. (see attached picture) I disabled Periodic Saving and set xSaveOnChange to TRUE and so the file usually updates immediately after changing one of the values. When changing the first value, it does not update which is consistent with this value not being saved. I also created a sample project and library from scratch which shows the same issue both using a Raspberry Pi and using a Linux machine. Does someone know what the reason for this could be or did someone make similar experiences? Looking forward to hearing your suggestions. Thanks in advance and best wishes Manuel
Last updated: 2023-10-17

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

Post by riccardo on VisuElems.CurrentUserGroupId is not stable ^{CODESYS Forge talk (Post)}
GoodMorning everyone. I have a system that, in case of alarm, have to block. When the operator logs in must have to acknoledge the alarm and should operate in the system freely. To perform this I detect the logged User by (VisuElems.CurrentUserGroupID <> 0) with a similar code to the the following: PROGRAM AlarmMngt VAR alarm : BOOL:= FALSE; Ack : BOOL:= TRUE; PushBottonOpening : BOOL:= FALSE; Valve : BOOL := FALSE; Flag: BOOL := FALSE; END_VAR IF alarm AND Ack AND (NOT Flag) THEN valve := FALSE; PushBottonOpening := FALSE; Ack := FALSE flag := TRUE; ELSIF (NOT alarm) AND Ack THEN flag := FALSE; END_IF (* if the system is in alarm but there is a logged operator that acknowledge the alarm the system allows the valve opening.*) IF (VisuElems.CurrentUserGroupID <> 0) AND Ack AND Alarm AND PushBottonOpening THEN Valve := TRUE; ELSIF (VisuElems.CurrentUserGroupID = 0) AND Alarm THEN valve := FALSE; END_IF The problem I have is in the last 5 lines of the code: Even if there is a logged in user, the GroupID variable is subjected to a refresh that cyclically set for an instant it to 0 and this close the valve making difficult to the user to work Now I solved it creating a time hysteresys cycle but it is not a good solution. Someone is able to explane me why the GroupID variable is sobjected to this refresh and how to stabilize to avoiding it? Thank you in advance, Riccardo
Last updated: 2023-11-10

Post by solve-it on SysFileOpenAsync ^{CODESYS Forge talk (Post)}
Just realized that it is the /dev/input/js0 file. Don't think this is a prob either. Found the ConfigFile. Where and how to add /dev/input/js0? raspberry [SysFile] FilePath.1=/etc/, 3S.dat PlcLogicPrefix=1 [SysTarget] TargetVersionMask=0 TargetVersionCompatibilityMask=0xFFFF0000 [CmpLog] Logger.0.Name=/tmp/codesyscontrol.log Logger.0.Filter=0x0000000F Logger.0.Enable=1 Logger.0.MaxEntries=1000 Logger.0.MaxFileSize=1000000 Logger.0.MaxFiles=1 Logger.0.Backend.0.ClassId=0x00000104 ;writes logger messages in a file Logger.0.Type=0x314 ;Set the timestamp to RTC [CmpSettings] FileReference.0=SysFileMap.cfg, SysFileMap FileReference.1=/etc/CODESYSControl_User.cfg [SysExcept] Linux.DisableFpuOverflowException=1 Linux.DisableFpuUnderflowException=1 Linux.DisableFpuInvalidOperationException=1 [CmpWebServer] ConnectionType=0 [CmpOpenSSL] WebServer.Cert=server.cer WebServer.PrivateKey=server.key WebServer.CipherList=HIGH [SysMem] Linux.Memlock=0 [CmpCodeMeter] InitLicenseFile.0=3SLicense.wbb [SysEthernet] Linux.ProtocolFilter=3 [CmpSchedule] ProcessorLoad.Enable=1 ProcessorLoad.Maximum=95 ProcessorLoad.Interval=5000 DisableOmittedCycleWatchdog=1 [CmpUserMgr] AsymmetricAuthKey=6873d655ac1f166f3743feea42d2f3dd1b39ae40 [CmpSecureChannel] CertificateHash=09fd8d52be4ddd45a709bc9c95e2aa093b3f5695 [SysSocket] Adapter.0.Name="eth0" Adapter.0.EnableSetIpMask=1 ;raspberry [ComponentManager] ;Component.1=CmpGateway ;Component.2=CmpGwCommDrvTcp ;Component.3=CmpGwCommDrvShm [SysCom] ;Linux.Devicefile=/dev/ttyS [CmpBlkDrvCom] ;Com.0.Name=MyCom ;Com.0.Baudrate=115200 ;Com.0.Port=3 ;Com.0.EnableAutoAddressing=1 [SysProcess] Command.0=shutdown [CmpApp] Bootproject.RetainMismatch.Init=1 ;Application.1=Application ;Application.1=Application ;Application.1=Application Application.1=Application [CmpRasPi] Architecture=armv6l [CmpRedundancyConnectionIP] [CmpRedundancy] [CmpSrv] [IoDrvEtherCAT]
Last updated: 2024-07-16

Post by programmierer on Implementing UDP Communication ^{CODESYS Forge talk (Post)}
Hello everyone, I hope you can help me with my problem. I am new to programming and am currently working with a WAGO controller in our lab, which controls a heat pump. My goal is to send the electrical power of the heat pump (Pel_WP) via a UDP connection to a specific IP address. I am using Codesys version 2.3 and following the guide I found here: https://forge.codesys.com/forum/de/396/genmed-Konfiguration%20der%20UDP%20Kommunikation%20Cosesys%20S7.pdf. I have adapted the guide to suit my needs. The data sending works since I can force the reception value Pel_WP and the data is sent accordingly. However, I am having trouble with the receiving part. The reception value is not being correctly received, and the diSocket variable shows -1. The connection between the heat pump and the WAGO controller seems to be set up correctly, as the heat pump is listed under the communication parameters with the correct IP address. I have also attached images to provide a better view of the setup. I would greatly appreciate any support or suggestions for a solution. Thank you in advance!
Last updated: 2024-08-02

Post by z870623 on About CPU Loading ^{CODESYS Forge talk (Post)}
I am running a runtime environment on an ARM A35 dual-core processor (1.5GHz) and have encountered some issues. The CPU load (both CPU0 and CPU1) occasionally spikes above 50% before returning to normal, and this happens around 2-3 times per minute. At the same time, I’ve noticed that the Max Cycle Time in the Codesys monitoring screen shows much worse performance compared to the A53 (1.2GHz), with nearly double the cycle time. The optimizations I have made so far are as follows: Set the CPU to performance mode. Isolated CPUs: CPU0 is dedicated to running Linux services and the runtime itself, while CPU1 runs the EtherCAT task and the MainTask. Despite CPU1 only running these two tasks, the utilization still increases above 50%, which I find unreasonable. Additionally, I performed tests using cyclictest both without and with the runtime running. The performance is shown in the following image: From the results, I believe the CPU performance should be fine, but I am unsure why the monitoring results are not as expected. The testing outcomes should ideally be as close as possible to the cyclictest results. Does anyone have related solutions to this issue?
Last updated: 2024-10-14

Post by atcprojectteam on Modbus Function Code 15, writing multiple coils ^{CODESYS Forge talk (Post)}
Hi all, I am using an RSTI-EP I/O card along with the EPXMBE101 Modbus/TCP network adapter. I have a Control Standard L license. I successfully connected to the I/O card via Modbus and can read inputs without any issues. However, when I try to write to the digital output modules using function code 15, I am unable to make any changes. Here’s what I have done so far: I created a small project using Structured Text. I set up Modbus channels (as shown in the attached image) and mapped the pins. When I use cyclic mode, the connection results in an error. However, when I use the rising edge, the connection works, but I don’t see any changes on the I/O card. For the output module, I assigned one bit to high. After that, I ran CODESYS Control Win V3. (Should I be running the PLC as well?) I built the program, but I am not receiving any response from the I/O card. Could you please advise on what might be causing this issue?
Last updated: 2025-02-26

Post by atcprojectteam on Modbus Function Code 15, writing multiple coils ^{CODESYS Forge talk (Post)}
Hi all, I am using an RSTI-EP I/O card along with the EPXMBE101 Modbus/TCP network adapter. I have a Control Standard L license. I successfully connected to the I/O card via Modbus and can read inputs without any issues. However, when I try to write to the digital output modules using function code 15, I am unable to make any changes. Here’s what I have done so far: I created a small project using Structured Text. I set up Modbus channels (as shown in the attached image) and mapped the pins. When I use cyclic mode, the connection results in an error. However, when I use the rising edge, the connection works, but I don’t see any changes on the I/O card. For the output module, I assigned one bit to high. After that, I ran CODESYS Control Win V3. (Should I be running the PLC as well?) I built the program, but I am not receiving any response from the I/O card. Could you please advise on what might be causing this issue?
Last updated: 2025-02-26

Post by jy77812 on MC_MoveCircularAbsolute Using Help ^{CODESYS Forge talk (Post)}
Dear People I’m trying to draw a circle using MC_MoveCircularAbsolute, but I keep encountering an error. The error message is SMC_CP_CIRCLE_CENTER_NOT_ON_BISECTOR. What I’m trying to do is simply draw a circle with a diameter of 20, starting from the point X=0, Y=0. I’ve set CircMode to center. It seems like a simple task, but the error keeps occurring, and it’s giving me a headache. I’d appreciate your help. I’ve also attached the program, so please provide any advice you can. I want to use the mode as the center. I've tried changing multiple coordinates and it won't run. Please help. sample stCirculAuxPoint.c.X := 20; stCirculAuxPoint.c.Y := 10; stCirculEndPoint.c.X := 20; stCirculEndPoint.c.Y := 30; fbMoveCircularAbsolute( AxisGroup := AxisGroup, Execute := xGroupCirculEx, CircMode := SMC_CIRC_MODE.CENTER, AuxPoint := stCirculAuxPoint, EndPoint := stCirculEndPoint, PathChoice := 0, Velocity := 50, Acceleration := 50, Deceleration := 50, Jerk := 50, CoordSystem := SMC_COORD_SYSTEM.MCS, BufferMode := 0, TransitionMode := 0, TransitionParameter := , OrientationMode := , VelFactor := , AccFactor := , JerkFactor := , TorqueFactor := , Name := , Done => , Busy => , Active => , CommandAborted => , CommandAccepted => , Error => , ErrorID => , MovementId => );
Last updated: 2025-06-04

Post by astutoski on No Motion with SM3_RaspiStepper (GPIO 23/24 Show No Pulses) ^{CODESYS Forge talk (Post)}
Hi everyone, I’m completely new to CODESYS and have been teaching myself. And i Want to control an Axis using SM3RaspiStepper. Following the example on the RaspiStepper home page, I set up an axis through a POU and tied the SMC_StartupDrive (Visu) template to my axis instance (sud). Unfortunately, the motor never moves and I don’t see any pulses on the PULSE pin (GPIO 23). Hardware -Raspberry Pi 4 B -Nema 17 stepper motor -A4988 stepper driver (EN pin permanently tied to GND) Software / Runtime -CODESYS 3.5 SP21 Patch 1 – Raspberry Pi runtime (demo) -SoftMotion in demo mode -Package: SM3_RaspiStepper 0.0.0.6 Axis parameters: Pulse pin GPIO 23 Direction pin GPIO 24 Enable pin 0 (unused) Disable pin 0 (unused) Whether I start the axis from the visualization template or through Online Config Mode, the motor never spins. In Online Config Mode I press Power → the state changes from Standstill to Discrete_Motion, but the motor shaft is still locked and no step pulses appear on GPIO 23 (checked with a scope). I can provide screenshots of the Visualization, PLC logs, or wiring pictures if that helps. Any ideas on what I might be missing? Happy to provide screenshots, project files, or scope captures if that helps. Thanks in advance!
Last updated: 2025-06-25

Post by pernockham on Pointer/reference to Codesys trend recording object? ^{CODESYS Forge talk (Post)}
I have a Hmi that acts as an interface for many (mostly identical) units. This is managed by a sort of "mux" where you select which unit that should be presented on the HMI. Backbone is solved by a HMI-gvl defined as reference/pointer to "unit-data", which then can be set to the individual units. While this works for most data I still have not sorted how to solve this for the trend recordings. One solution would be to have already "mux:ed" data values as source for the/one trend. However then the trend would contain data from different units/sources which could/will cause confusion. If its possible to "clear" this can be mitigated. Possibly let the trend have its own "mux-selector" (ie, the hmi are focusing on unit#3 however trend data is locked on unit#5), that could also work.. Or, let each unit have its own trend recording, which is focused if the unit is "selected". Can I reach the trend recording objects programmatically (those defined in the device tree)? Ie, can I use a "reference/pointer to these trend recording objects"? There is a field "data source" in the trend properties dialog which seems to resemble what Im looking for? But Im not sure if I can use it in some way, I cannot change anything in this field it only says <local application="">. </local>
Last updated: 2025-09-16

Post by tomast on Codesys and Siemens SINAMICS 20 modbus RTU "Response CRC Fail" ^{CODESYS Forge talk (Post)}
Hi everyone, I'm currently working on a project involving the control of 5 VFDs via Modbus RTU, this time using the WAGO 750-8212 CPU. So far, I've managed to make progress, but I've encountered an issue. While I can successfully read and write to all the registers I need, I consistently encounter a "Response CRC Fail" error when attempting to write the value 1151 to the STW register at address 40100. I'm able to set the frequency via register 40101 and adjust all other parameters using different registers. Setting STW to 1150 results in the drive ready boolean from the ZSW-bit being received instantly. However, the moment I attempt to send 1151 to register 40100, I immediately receive the "Response CRC Fail" error for all channels. I've also attempted to use combined control, employing Modbus for frequency control and starting from a digital input. Everything seems to function properly until I send the start command to the VFD. Interestingly, I consistently encounter the same error the moment I send the start command, regardless of whether I use register 40006 (high) or 40100 (1151). Could someone please assist me in resolving this issue?
Last updated: 2024-03-21

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