Post by gseidel on SMC_ERROR SMC_CGR_INVALID_POSPERIOD ^{CODESYS Forge talk (Post)}
Hi blitz, that usually means that the modulo period, when converted to increments, is larger than 2^31. (The bus bandwidth is usually 2^32.) What is your "technical unit", do you program in angular degrees? And what is the modulo period? If you want you can post the drive configuration (screen shot of the "General" and "Scaling/Mapping" page). Best regards, Georg
Last updated: 2025-12-16

Post by aniket-b on Scara3 kinematic robot error ^{CODESYS Forge talk (Post)}
Thanks Georg for responding. I have followed the suggestion mentioned in the real time problem. However, it does not solve the problem. The weird part is, the robot stops at the same position randomly and it does not stop when I increase the speed of the motion.
Last updated: 2025-12-23

Post by kaotic2499 on Upgraded Raspberry 2b to Raspberry 5, Trends Broken? ^{CODESYS Forge talk (Post)}
There is currently a bug with the Raspberry Pi 64 SL where it is unable to Trend Global Retain or PersistantVars. The work around is to use standard Global Variables for Trend Data. This will be patched by Codesys in the near future reference "VIS-6170"
Last updated: 2025-11-13

Post by kalmeyer on STEPPER CODESYS SOFTMOTION_DRIVE ^{CODESYS Forge talk (Post)}
Hello everyone I have been trying to solve this problem for a long time. Please help me..... I have browsed: https://forge.codesys.com/drv/sm3raspistepper/home/Home/ and it says under "IMPLIMENTATION" that I have to create a POU with the text to be able to use: MC_Power or MC_MoveVelocity How do I write it into the CODESYS program? Thanks in advance /Klaus Kalmeyer
Last updated: 2025-11-17

Post by yohayr on Access Violation sherd memory ^{CODESYS Forge talk (Post)}
Hi, once in a while I get an Access Violation exception in Sherd memory pointer. the strange thing is that I protect the pointer dereference and I get this exception 1 line after the protection. I added photos of the exception can someone tell me what is that about?
Last updated: 2025-11-25

Post by yohayr on Access Violation sherd memory ^{CODESYS Forge talk (Post)}
Hi, once in a while I get an Access Violation exception in Sherd memory pointer. the strange thing is that I protect the pointer dereference and I get this exception 1 line after the protection. I added photos of the exception can someone tell me what is that about?
Last updated: 2025-11-25

Post by bertram on Installation IOT Libraries kann nicht installiert werden ^{CODESYS Forge talk (Post)}
IOT Package SL 1.12.0.0 läst sich nicht Installieren da keine Installation gefunden wurde in die die das Package installiert werden kann. Windoof 11 Installer 2.5.0 Codesys V3.5 SP21 Patch 3+ 64 Bit. Hat jemand einen Rat für mich ? Bin um jeden Tip dankbar. herzliche Grüße an alle.
Last updated: 2025-11-25

Post by worker69 on Alarmgruppenvorlage kann über Kontextmenü keine weitere Latch Variable hinzugefügt werden ^{CODESYS Forge talk (Post)}
Hallo, ich habe das problem, dass ich in einer Alarmgruppenvorlage keine wietere LATCh Variable hinzufügen kann. Wenn ich dies über das Kontextmenü versuche, dann erscheint folgende Fehlermeldung "Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt". Ich verwende Codesys V3.5.19 P0 und 23.5.19 P7 Was mache ich falsch
Last updated: 2026-01-05

Post by alexgooi on Codesys KNX implementation ^{CODESYS Forge talk (Post)}
Dear forum, We are currently doing some research on the Codesys KNX implementation (https://store.codesys.com/en/codesys-knx-sl.html). We almost have it working but we are missing the last part. The setup: We have a Codesys virtual control container running on docker (4.17.0.0), the I/O is running over an Ethernet IP coupler (Weidmüller), and this is running fine. As far as I’m concerned this tells me that the ethernet device is working properly (the container has access to the outside world, including multicast). Underneath this ethernet adapter the KNX module is added (see picture). In the KNX device (Codesys) 2 input variables are added (see picture), and these are exported to ETS (ETS 5). In ETS A Codesys KNX device has been imported and the Codesys export was imported, afterwards the group addresses are attached to the variables (see picture). Afterwards this configuration is downloaded to the Codesys controller (Container) via ETS. ETS asks for the pressing of the programming button, when the virtual programming button is pressed the download starts and finishes without any errors. This tells me that ETS is communicating with the Codesys controller, and that the download process is ok (so far so good). Now the part where we are struggling with, somehow we need to convert the KNX TP to KNX IP. For this we have the following interface: Zenio KIPI SC (https://www.zennio.com/product/kipi-sc/) this is a KNX TP to IP interface. We have the following setup for this device (see picture) (an IP in the same subnet is used). We tried multiple combinations of IP addresses but the TP devices are simply not communicating to the Codesys container. Does anyone has any advice on what to try next. To make the question more explicit how can we link the TP bus to the Codesys device? Kind Regards Alex
Last updated: 2026-01-05

Post by osande on Trend/trace data ^{CODESYS Forge talk (Post)}
Ok, the problem is that the trend/trace system can't read function block instance data. The variables has to be stored directly under the program calling the FBs. Thus, FB variables to be trended/traced must be connected to variables declared in the program. Seems like a bug to me!
Last updated: 2026-03-13

Post by bdschnapp on OPC-UA ApplicationUri / ProductUri ^{CODESYS Forge talk (Post)}
From Codesys support: The format of the URN is always the same. It's always urn:<vendor>:<product>:OPCUA:Server. What I think you can influence the vendor and product (DeviceName) through settings in the runtime cfg file:</product></vendor> [SysTarget] VendorNameUnicode="T\00E\00S\00T\00" DeviceNameUnicode="t\00e\00s\00t\00" Note that these are 16-bit strings, thus the ASCII padded with nulls
Last updated: 2026-03-17

Post by dat422 on OPC UA Enum Issue ^{CODESYS Forge talk (Post)}
Hi everyone, I’m using CODESYS V3.5 SP22 with the Communication Manager to run an OPC UA server. I have a problem with enums: when I view them in a client like UaExpert, only the last enum member is shown, and it has the wrong value. Has anyone seen this issue before or knows what might cause it? Thanks!
Last updated: 2026-03-27

Post by poliautomacao on Absolute movement controlled by an external encoder. ^{CODESYS Forge talk (Post)}
Georg, the encoder's actual position was -208 because I moved it manually for testing, but I managed to get it working. Your information is correct; there was a parameter error, Kp was at 0. After I adjusted it, it responded as expected. Thank you very much for your help.
Last updated: 2026-04-02

Post by nulltrace on Modbus TCP Server connection is ESTABLISHED but all holding registers are value 0? ^{CODESYS Forge talk (Post)}
your case looks different, the first one was an codesys modbus tcp-slave, your's an Master-Application with gateway. I dont know this Unit, but i would say, from Point of Codesys it looks wrong configured. Just give us more detailed configuration and the please make a sketch of the topology you're trying to realise.
Last updated: 2026-04-08

Post by gseidel on Movesuperimposed Command Aborted Error ^{CODESYS Forge talk (Post)}
Hi transcend, most likely cause: one of the motion FBs was not called in each IEC cycle. See https://content.helpme-codesys.com/en/CODESYS%20SoftMotion/_sm_basic_common_errors.html. A different possible error, if you are using buffermode buffered or blending: the execution order of the motion FBs was wrong. See https://content.helpme-codesys.com/en/CODESYS%20SoftMotion/_sm_buffermode_execution_order.html. Best regards, Georg
Last updated: 2026-04-13

Post by alexgooi on No Bootproject possible ^{CODESYS Forge talk (Post)}
Hello Simon, Thank you for your response. The problem occurs after about 10 online changes, after this a full download is required, but that means that the installation is going down. Is it possible to enlarge the space reserved for online changes, so that the problem occurs after 100 online changes for example? Kind regards Alex
Last updated: 2026-04-14

Post by alexgooi on Network variable stops sending ^{CODESYS Forge talk (Post)}
Are you making use of structs in the NVL? In the past I had similar behavior (NVL stops sending) when I added something in the struct. if you are making use of structs makes sure that the structs are identical in both projects. If this is not the case, have you tried changing the port number to something different than 1202?
Last updated: 2026-04-29

Post by petra on Gateway not configured properly when read_online_value ^{CODESYS Forge talk (Post)}
Here is what I use to read online the parameter value. proj = projects.primary app = proj.active_application plc = proj.find("Device", True)[0] onlineapp = online.create_online_application(app) onlineapp.login(OnlineChangeOption.Try, True) dev1 = proj.find("DEV1", True)[0] for conn in dev1.connectors: > parms = conn.host_parameters > if len(parms) > 0: > p = parms.by_id(1074855985) > p.read_online_value(2000) ---> error: Gateway not configured properly
Last updated: 2026-06-12

Post by cd-tt on cannot connect ot linux runtime: device does not answer the scanrequest ^{CODESYS Forge talk (Post)}
thank you eschwellinger. That one solved it for me. The password must have a length of at least 8 characters. The password must consist of at least 4 different characters. The password must contain lowercase letters. The password must contain uppercase letters. The password must contain digits. The password must contain special characters.
Last updated: 2026-06-12

Post by petra on Gateway not configured properly when read_online_value ^{CODESYS Forge talk (Post)}
Here is what I use to read online the parameter value. proj = projects.primary app = proj.active_application plc = proj.find("Device", True)[0] onlineapp = online.create_online_application(app) onlineapp.login(OnlineChangeOption.Try, True) dev1 = proj.find("DEV1", True)[0] for conn in dev1.connectors: > parms = conn.host_parameters > if len(parms) > 0: > p = parms.by_id(1074855985) > p.read_online_value(2000) ---> error: Gateway not configured properly Does anyone know about this?
Last updated: 2026-06-12

Post by gilad on CODESYS SoftMotion Generic DSP402 on WAGO PFC200 + Festo CMMT-AS: MC_Power stays Busy, Controlword remains 0 ^{CODESYS Forge talk (Post)}
Hello, I am trying to connect a Festo CMMT-AS-C4-3A-MP-S1 servo drive to a WAGO PFC200 (750-8210) using EtherCAT and CODESYS SoftMotion. Hardware PLC: WAGO PFC200 750-8210 Drive: Festo CMMT-AS-C4-3A-MP-S1 Communication: EtherCAT CODESYS version: Device description version 6.3.1.1 Drive firmware: 36.10.3 Current Status EtherCAT communication is working correctly: EtherCAT master = Running Drive detected and operational PDO input and output mapping is active Statusword, position and velocity are updating correctly Current PDO mapping: Outputs: 6040 Controlword -> %QW0 6060 Modes of operation -> %QB2 607A Target position -> %QD1 60FF Target velocity -> %QD3 Inputs: 6041 Statusword -> %IW2 6061 Modes of operation display -> %IB6 6064 Position actual value -> %ID2 606C Velocity actual value -> %ID3 SoftMotion Axis I added a SoftMotion CiA402 axis under the EtherCAT slave: Axis type: SM_Drive_GenericDSP402 Axis communication state: operational (100) No SoftMotion mapping errors anymore Problem MC_Power is executed with: Enable = TRUE bRegulatorOn = TRUE bDriveStart = TRUE but: Status = FALSE Busy = TRUE Error = FALSE ErrorID = SMC_NO_ERROR The axis remains in: SMC_AXIS_STATE.power_off DSP402 state = SWITCH_ON_DISABLED The most important observation: Statusword = 32784 (0x8010) Controlword (%QW0) remains 0 all the time SoftMotion never writes 6, 7, or 15 to the Controlword. Additional Information The axis status page reports: "The license is missing or invalid. The PLC runs in demo mode." I am not sure whether: The missing SoftMotion license prevents Controlword generation completely. The axis is still not correctly connected to the EtherCAT slave despite operational communication. There is an additional CiA402 configuration step required for the Festo CMMT-AS drive. Has anyone successfully used a Festo CMMT-AS MP drive with CODESYS SoftMotion Generic DSP402 on a WAGO PFC200? Any suggestions on what should be checked next would be greatly appreciated.
Last updated: 6 hours ago

Post by ilarioimi on Date Picker ^{CODESYS Forge talk (Post)}
Hello, I am new here and need some help. I have added the Date Picker to a visualization page. The date selection works, but the current day is not highlighted. The date and time are displayed correctly by the system, which is set by default to “VisuElems.Visu_DateTime.DisplayUTC:= FALSE;”. Is there some project setting or Visualization Manager setting that I am missing? Thank you. Ilario.
Last updated: 2026-01-14

Post by schelchpaul on Problem with missing content in Dialog Windows in Win11 ^{CODESYS Forge talk (Post)}
Hello, i have the big Problem that dialog windows in Codesys 2.3 are cut off, as seen in the attached screenshots. I've tried to adjust the screen resolution, i tried changing scaling, i tried the compatibility options. To keep it short, nothing worked. If someone already had that problem and knows a fix, please answer.![]
Last updated: 2026-01-14

Post by elektron785 on Nach Neuinstallation Plug-In Fehler ^{CODESYS Forge talk (Post)}
Ich kann nur sagen, dass ich die gleichen Probleme habe. Aber auch erst neuerdings. Zuerst kam auch die Meldung mit dem falschen Versionsprofil. Habe jetzt schon mehrere Sachen versucht Neuinstallation / Reparatur. Alles deinstalliert. Leider hat das bei mir noch nicht geholfen. Codesys läuft unendlich langsam - immer wieder keine Rückmeldung.
Last updated: 2026-01-22

Post by davidbo on Two licenses have to be installed forgot to enable one license ^{CODESYS Forge talk (Post)}
I have to install "Basic M" and "Visualization M", but it seems that during installation of "Basic M" you have to enable "Visualization S" I assume if you here after want to install my "Visualization M". And I forgot to enable "Visualization S" How do I fix that?
Last updated: 2026-02-02

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