Post by reinier-geers on internal error ^{CODESYS Forge talk (Post)}
Hi ive got an internal error. BUt no solution for this. How do i solve this ? ------ Build started: Application: Slave_3.Application ------- [ERROR] Internal error:System.NullReferenceException: De objectverwijzing is niet op een exemplaar van een object ingesteld. bij _3S.CoDeSys.ObjectManager.ExistingPSNode.get_ParentObjectGuid() bij _3S.CoDeSys.ObjectManager.AbstractPSNode.get_ParentNode() bij _3S.CoDeSys.ObjectManager.ProjectStructure.ConsolidateAndClearPendingChanges(LList`1 pendingChanges) bij _3S.CoDeSys.ObjectManager.ProjectStructure.RaisePendingChanges(Boolean bTriggerPendingChanges2) bij _3S.CoDeSys.ObjectManager.Project.HandleUndoMgrAfterEndCompoundAction2(EventArgs e) bij _3S.CoDeSys.ObjectManager.UndoManager.OnAfterEndCompoundAction2(EventArgs e) bij _3S.CoDeSys.ObjectManager.UndoManager.EndCompoundAction() bij _3S.CoDeSys.DeviceEditorSoftMotion.StaticSoftMotionEditor._ehBeforeCompile(Object sender, CompileEventArgs e) bij _3S.CoDeSys.Core.LanguageModel.CompileEventHandler.Invoke(Object sender, CompileEventArgs e) bij _3S.CoDeSys.Core.LanguageModel.CompileEventHandler.Invoke(Object sender, CompileEventArgs e) bij _3S.CoDeSys.LanguageModelManager.LanguageModelManagerConsolidated.OnBeforeCompile(CompileEventArgs e) bij _3S.CoDeSys.LanguageModelManager.LanguageModelManagerConsolidated.RaiseAndCheckBeforeCompile(Guid guidApplication, IMessageCategory cmc) bij ..
(Boolean , Boolean , Boolean ) bij _3S.CoDeSys.Compiler35210.CompilerPhases.CompilerPhaseControllerGenerateCode.(Boolean ) bij _3S.CoDeSys.Compiler35210.CompilerPhases.CompilerPhaseControllerGenerateCode.() Build complete -- 1 errors, 0 warnings : No download possible
Last updated: 2026-04-14

Post by baotthitawat on Why Structured SCADA Documentation Matters in Modern Industrial Systems ^{CODESYS Forge talk (Post)}
Modern SCADA development is no longer limited to monitoring dashboards and PLC communication. Today’s industrial systems often require: Cloud architecture Web & mobile SCADA API integration IIoT communication Alarm management Scalable deployment workflows One challenge in many projects is that deployment knowledge is usually scattered across multiple documents, configuration guides, and troubleshooting references. As systems become more connected, engineers need a more structured learning approach to reduce deployment time and improve maintainability. The ATSCADA Training Book is an interesting example because it organizes the ecosystem into a clearer roadmap covering: SCADA architecture Driver & OPC communication Web visualization Mobile applications Cloud & IIoT systems Troubleshooting & maintenance I think structured technical documentation will become increasingly important as industrial automation systems continue evolving toward larger and more connected environments.
Last updated: 2026-05-27

Post by baotthitawat on SCADA Systems Are Becoming Easier to Integrate With Modern Applications ^{CODESYS Forge talk (Post)}
One thing I’ve been seeing recently is that more industrial systems are starting to expose realtime SCADA data through APIs instead of keeping everything isolated inside the local monitoring software. This makes integration much easier for cloud platforms, mobile dashboards, AI analytics, and enterprise applications that need realtime industrial data. Instead of exporting reports manually or building complicated middleware, APIs allow external systems to access SCADA data directly in realtime. I think this becomes especially useful for applications like wastewater treatment monitoring, where operators need better visibility into alarms, equipment status, and operational conditions across different locations. Feels like modern SCADA is slowly evolving from a standalone monitoring platform into part of a larger connected industrial ecosystem.
Last updated: 2026-05-28

Post by baotthitawat on SCADA Systems Are Becoming Easier to Integrate With Modern Applications ^{CODESYS Forge talk (Post)}
One thing I’ve been seeing recently is that more industrial systems are starting to expose realtime SCADA data through APIs instead of keeping everything isolated inside the local monitoring software. This makes integration much easier for cloud platforms, mobile dashboards, AI analytics, and enterprise applications that need realtime industrial data. Instead of exporting reports manually or building complicated middleware, APIs allow external systems to access SCADA data directly in realtime. I think this becomes especially useful for applications like wastewater treatment monitoring, where operators need better visibility into alarms, equipment status, and operational conditions across different locations. Feels like modern SCADA is slowly evolving from a standalone monitoring platform into part of a larger connected industrial ecosystem.
Last updated: 2026-05-28

Post by baotthitawat on SCADA Systems Are Becoming Easier to Integrate With Modern Applications ^{CODESYS Forge talk (Post)}
One thing I’ve been seeing recently is that more industrial systems are starting to expose realtime SCADA data through APIs instead of keeping everything isolated inside the local monitoring software. This makes integration much easier for cloud platforms, mobile dashboards, AI analytics, and enterprise applications that need realtime industrial data. Instead of exporting reports manually or building complicated middleware, APIs allow external systems to access SCADA data directly in realtime. I think this becomes especially useful for applications like wastewater treatment monitoring, where operators need better visibility into alarms, equipment status, and operational conditions across different locations. Feels like modern SCADA is slowly evolving from a standalone monitoring platform into part of a larger connected industrial ecosystem.
Last updated: 2026-05-28

Post by gseidel on CAM Motion Recover after STO ^{CODESYS Forge talk (Post)}
Dear Mr. Kolev, I'm not sure I understood correctly. But this is my take on your question: When the STO of the slave is triggered, store the current master position (e.g. 225 units) After the reset of the slave error, call MC_SetPosition on the virtual master and reset it to the stored position (225 units) Optionally, before MC_CamIn is restartet, move the slave back to the slave position corresponding to the stored master position. (If you do this, no ramping in will be necessary) Restart MC_CamIn, with absolute master position and absolute slave position. Choose the StartMode that is appropriate for your machine. Best regards, Georg Seidel
Last updated: 2026-02-16

Post by yannickasselin on Question about Demo License limitations for Modbus TCP communication and Fieldbus Instances ^{CODESYS Forge talk (Post)}
As far as I know, there is no other limitations than the 2 hours limit. The demo mode should be plenty enough for testing purposes. Regarding instances. In the device tree, 1 master = 1 instance, no matter how many slaves the master is communicating with. But it is also possible that your Codesys runtime act as a slave. In this case, each slave in the device tree is one instance. You can also use the license metric tool in the IDE. This will tell you exactly how many instances you have in your project. https://content.helpme-codesys.com/en/CODESYS%20Development%20System/_cds_edt_device_licensed_software_metrics.html
Last updated: 2026-02-28

Post by egr99 on Modbus TCP Server connection is ESTABLISHED but all holding registers are value 0? ^{CODESYS Forge talk (Post)}
You're absolutely right. Sorry for that. In the meantime I wrote a Function block to handle the reads and writes to the different attached RTU-devices. It processes the parameter like (str_Modbus:=(usiSlave:=1, uiFC:=5, uiLEN:=1, uiOFFSET:=0, uiInterval:=500)) and the corresponding output, waits for the response and processes next request in a 5-state procedure. It's working for 2 gateways (stable without errors, although error recovery is included). But nevertheless it should be possible with the Channel definitions of Codesys. Much easier to maintain :)
Last updated: 2026-04-08

Post by vstrom on Codesys v3.5.22.10 - Fail to create a project Archive ^{CODESYS Forge talk (Post)}
Hi to all, I've created a project using the File->New Project-> Standard Project command. Then I've add the object "Visualization Manager" and then tried to create a project archive (File->Project Archive->Save Archive), but it fails with the error "Access to the path 'C:\Program Files\CODESYS 3.5.22.10\CODESYS\Common\3hxi4iod.put' is denied". The idicated file don't exist. First time of use of the new Codesys versionù, I've reinstalled the developement software but nothing change. If I don't add the Visualization part, the archive is created, it's seems to be a problem with the HMI part. Any ideas? Thanks
Last updated: 2026-04-22

Post by baotthitawat on SCADA Systems Are Becoming Easier to Integrate With Modern Applications ^{CODESYS Forge talk (Post)}
One thing I’ve been seeing recently is that more industrial systems are starting to expose realtime SCADA data through APIs instead of keeping everything isolated inside the local monitoring software. This makes integration much easier for cloud platforms, mobile dashboards, AI analytics, and enterprise applications that need realtime industrial data. Instead of exporting reports manually or building complicated middleware, APIs allow external systems to access SCADA data directly in realtime. I think this becomes especially useful for applications like wastewater treatment monitoring, where operators need better visibility into alarms, equipment status, and operational conditions across different locations. Feels like modern SCADA is slowly evolving from a standalone monitoring platform into part of a larger connected industrial ecosystem.
Last updated: 2026-05-28

Post by baotthitawat on SCADA Systems Are Becoming Easier to Integrate With Modern Applications ^{CODESYS Forge talk (Post)}
One thing I’ve been seeing recently is that more industrial systems are starting to expose realtime SCADA data through APIs instead of keeping everything isolated inside the local monitoring software. This makes integration much easier for cloud platforms, mobile dashboards, AI analytics, and enterprise applications that need realtime industrial data. Instead of exporting reports manually or building complicated middleware, APIs allow external systems to access SCADA data directly in realtime. I think this becomes especially useful for applications like wastewater treatment monitoring, where operators need better visibility into alarms, equipment status, and operational conditions across different locations. Feels like modern SCADA is slowly evolving from a standalone monitoring platform into part of a larger connected industrial ecosystem.
Last updated: 2026-05-28

Post by baotthitawat on SCADA Systems Are Becoming Easier to Integrate With Modern Applications ^{CODESYS Forge talk (Post)}
One thing I’ve been seeing recently is that more industrial systems are starting to expose realtime SCADA data through APIs instead of keeping everything isolated inside the local monitoring software. This makes integration much easier for cloud platforms, mobile dashboards, AI analytics, and enterprise applications that need realtime industrial data. Instead of exporting reports manually or building complicated middleware, APIs allow external systems to access SCADA data directly in realtime. I think this becomes especially useful for applications like wastewater treatment monitoring, where operators need better visibility into alarms, equipment status, and operational conditions across different locations. Feels like modern SCADA is slowly evolving from a standalone monitoring platform into part of a larger connected industrial ecosystem.
Last updated: 2026-05-28

Post by baotthitawat on SCADA Systems Are Becoming Easier to Integrate With Modern Applications ^{CODESYS Forge talk (Post)}
One thing I’ve been seeing recently is that more industrial systems are starting to expose realtime SCADA data through APIs instead of keeping everything isolated inside the local monitoring software. This makes integration much easier for cloud platforms, mobile dashboards, AI analytics, and enterprise applications that need realtime industrial data. Instead of exporting reports manually or building complicated middleware, APIs allow external systems to access SCADA data directly in realtime. I think this becomes especially useful for applications like wastewater treatment monitoring, where operators need better visibility into alarms, equipment status, and operational conditions across different locations. Feels like modern SCADA is slowly evolving from a standalone monitoring platform into part of a larger connected industrial ecosystem.
Last updated: 2026-05-28

Post by alex-n on Problem with keeping up the distance between two axes ^{CODESYS Forge talk (Post)}
Hello. I have a task to synchronize the movement of two axes and maintain the distance between them. First axe makes equal steps by trigger using MC_MoveRelative function. The second one is standstill and after another signal should catch up the first one from its position to a specified distance and keep it. I've tried to use MC_Phasing and mostly it works. Second axis catches up the first and starts make step with it. But in one moment this axis can crash into the first and there is no clear connection as to why this is happening. It can work correct for a day or for a week.
Last updated: 2026-06-04

Post by domebruce on TCP communication and TCP Streams ^{CODESYS Forge talk (Post)}
Hello, I'm doing some tests with TCP communication using Reader, Writer and TCP_Process components from NBS 4.0. I'm having a really hard time finding documentation and examples on these components. I found a very simple and incomplete example here: https://forge.codesys.com/prj/codesys-example/nbs/home/Home/. The documentation is also insufficient: it only provides the names of the FBs, Methods and their parameters, but no descriptions about how to use them. Do you have any suggestions on where to find more support? More generally, why is the free online CoDeSys documentation so poor? What do you think? Thanks Domenico Canavero
Last updated: 2026-06-16

Post by kuegerls on PROFINET Controller SL: WRREC remains BUSY forever, no DCE/RPC packets transmitted (RevPi Connect 5 + NORD SK205E) ^{CODESYS Forge talk (Post)}
Hello , I am currently evaluating the CODESYS PROFINET Controller SL on a Revolution Pi Connect 5 and have encountered a problem with acyclic PROFINET Record Access (WRREC/RDREC). System Hardware: Revolution Pi Connect 5 Runtime: CODESYS Control 4.16.0.0 (SDK 3.5.21.10) Development System: CODESYS V3.5 SP21 (64-bit) CommFB: 3.5.17.10 ProfinetCommon: 4.6.0.0 PROFINET Controller Device: PN-Controller 4.6.0.0 PROFINET Device: NORD DRIVESYSTEMS SK205E with SK TU4-PNT GSDML: GSDML-V2.46-NORDDRIVESYSTEMS-PNT-20251016.xml Network The PROFINET network is completely separated from the office network. RevPi: eth0 → Office network eth1 → PROFINET wlan0 → Visualization The PN Controller is configured to use eth1. IP configuration: RevPi (eth1): 192.168.100.1/24 NORD Drive: 192.168.100.3 Connection is established successfully. Current Status The PN Controller reports: Controller Status = Run Online = TRUE IP Active = TRUE Connections = 1 Cyclic PROFINET IO communication works correctly. Problem I am trying to access PKW parameters via WRREC (Record Index 100). The request buffer contains: 01 14 00 04 92 00 00 00 00 00 00 which corresponds to Reference = 0x01 Request = Read Axis = 0 Parameter = 170 + 1000 Subindex = 0 Value = 0 The WRREC call is fbWRREC( REQ := xWrReq, ID := ConnectionID, INDEX := 100, LEN := 11, RECORD := ADR(TxBuffer) ); REQ is pulsed for one PLC cycle only. Observed Behaviour WRREC enters BUSY state and never finishes. Observed values: BUSY = TRUE DONE = FALSE ERROR = FALSE STATUS = 16#FFFFFFFF indefinitely. Packet Capture A Wireshark capture was taken on the PROFINET network. Observed traffic: PROFINET RT LLDP DCP Observed: successful cyclic IO Not observed: DCE/RPC Record Write Record Read RPC Bind No RPC packets are transmitted at all. Diagnostic Messages The controller repeatedly reports AR alarm.ind(err) AR CMI timeout although cyclic IO communication continues to work. Already Verified The following points have already been checked: correct Ethernet interface (eth1) correct CREATE_ID result correct Device ID correct Slot/Subslot correct GSDML correct REQ pulse RECORD buffer is larger than LEN cyclic IO communication works different Record Indices (100...104) tested Question Is there any known issue or limitation where WRREC/RDREC requests remain permanently BUSY and no RPC Record Access packets are generated? Could this behaviour be related to Runtime 4.16.0.0, PN Controller 4.6.0.0, the missing runtime license (currently running in demo mode), or any known issue with the PROFINET Controller SL? I am currently evaluating the PROFINET Controller SL and therefore the runtime is operating in demo mode. Could you please confirm whether WRREC/RDREC (acyclic Record Data services) are fully supported in demo mode, or whether a valid license is required for these services? If required, I can provide: complete project archive Wireshark capture (.pcap) GSDML online screenshots diagnostic log Thank you very much for your help. Best regards, Stefan
Last updated: 2026-07-17

Post by rossanoparis on Upgrading CODESYS runtime from v4.7 to v4.9 using a bash script leads to lose the licences stored in the soft container ^{CODESYS Forge talk (Post)}
System information - Controller: KUNBUS RevPi CONNECT-S - OS: Linux buster 32bit 5.10.103-rt62-v7l #1 SMP PREEMPT_RT armv7l GNU/Linux - CODESYS v3.5 SP19 Patch 2 I'm facing a problem related to codesys licences using a procedure based on a bash script. Such bash script detect the presence of new .deb files and install them on system. My automation solution don't allow to be maintained by dedicated personal, thus even the CODESYS runtime SW must be installed using an "automatic" procedure instead of using the CODESYS tool. remark I've been using the following procedure since the runtime v4.5 without any issue. Before installing the new runtime packages, I need to copy the file CODESYSControl_User.cfg (here attached) because of new section which is necessary to add in order to allow some folders to be written by CODESYS runtime v4.9 Up to now, this has been unnecessary, this is the main difference between my previos bash file and the new one. remark If I skip this action, everythings goes fine, but my CODESYS application can't work as it needs to access some folders on controller's file system. Process - Before the procedure: the licenses are OK (see attached file lic-01.png) - After the procedure: the new CODESYS runtime version is correctly installed, but the software container with v1.19 and all licences disappear (see attached file lic-02.png) This is the synthetic content of bash script I'm using. # Stop runtime sudo service codesyscontrol stop sudo service codesysedge stop # Move the new CODESYSControl_User.cfg file # New configuraton with folders declared sudo mv -f CODESYSControl_User.cfg /etc # Install runtime package echo N | sudo apt-get install -y --allow-downgrades codesyscontrol_raspberry_4.9.0.0_armhf.deb # Install edge gateway package echo N | sudo apt-get install -y --allow-downgrades codesysedge_edgearmhf_4.9.0.0_armhf.deb # Reboot controller sudo reboot Thanks in advance
Last updated: 2023-09-19

Post by tk096 on Some 'pathetic' errors in SoftMotion program ^{CODESYS Forge talk (Post)}
Meanwhile, I would like to understand why the motion FB instances must still be called even after the Execute is set to FALSE, especially in view of the fact that the next instruction is programmed to abort the previous one, with BufferMode set to 'Aborting'. All these unnecessary FB calls are an unnecessary overhead on the CPU anyway. Is there any precise rule about when to cease calling the various instances? (It should precisely be the 'done' status that says this one has finished its work). In general: - Motion function blocks have to be called until they report 'Done', 'Error', 'CommandAborted' or a subsequent motion FB with BufferMode=Aborting is started in the current cycle. - Setting the Execute input to FALSE will not abort any ongoing motion of the motion function block. For example, one case that is often problematic is the execution of the Axis Halt instruction. When, after a MoveAbosulte instruction this returns the event as 'done' and indeed the axis is in standstill, the state machine first sets the move instruction to FALSE, and the next cycle sets the Halt request to TRUE. Some of the time everything works out fine. Occasionally, however, in this exchange, the axis goes into fault, also losing the OPERATIONAL state. I think the error SMC_FB_WASNT_CALLED_DURING_MOTION is only a follow-up (and misleading) error that results from the axis not being in operational state anymore (bus problems). Is there an error 'regulator or start not set' in the device log before the error 'motion generating FB wasn't called for at least one cycle'? Which error does the respective function block (Halt.ErrorId) report?
Last updated: 2024-07-22

Post by paulpotat on cm4 runtime problem ^{CODESYS Forge talk (Post)}
Hello, I have exactly the same issue, with the following configuration : Hardware version >>> cat /proc/cpuinfo processor : 0 model name : ARMv7 Processor rev 3 (v7l) BogoMIPS : 108.00 Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32 CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xd08 CPU revision : 3 processor : 1 model name : ARMv7 Processor rev 3 (v7l) BogoMIPS : 108.00 Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32 CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xd08 CPU revision : 3 processor : 2 model name : ARMv7 Processor rev 3 (v7l) BogoMIPS : 108.00 Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32 CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xd08 CPU revision : 3 processor : 3 model name : ARMv7 Processor rev 3 (v7l) BogoMIPS : 108.00 Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32 CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xd08 CPU revision : 3 Hardware : BCM2711 Revision : a03141 Serial : 10000000d5be5b5f Model : Raspberry Pi Compute Module 4 Rev 1.1 Kernel version >>> uname -a Linux raspberrypi 6.1.21-v7l+ #1642 SMP Mon Apr 3 17:22:30 BST 2023 armv7l GNU/Linux OS Version >>> cat /etc/os-release PRETTY_NAME="Raspbian GNU/Linux 11 (bullseye)" NAME="Raspbian GNU/Linux" VERSION_ID="11" VERSION="11 (bullseye)" VERSION_CODENAME=bullseye ID=raspbian ID_LIKE=debian HOME_URL="http://www.raspbian.org/" SUPPORT_URL="http://www.raspbian.org/RaspbianForums" BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs" /boot/config.txt I added the following line : arm_64bit=0 CodeSys runtime version 4.10 Were you able to solve the issue @michelebianchi ? Any help with this would be appreciated... BR
Last updated: 2024-08-28

Post by gunstr on CODESYS control on RPi starts, shortly runs, then exits ^{CODESYS Forge talk (Post)}
I now tried to install 4.17.0.0 on a fully clean installations: A brand new RPi 4B Install latest Raspberry Pi OS Lite, Release date 13 May 2025, 64bit run sudo apt update && sudo apt full-upgrade When asked - Select to install the updated version of '/etc/initramfs-tools/initramfs.conf' Install CODESYS Control for Raspberry Pi SL. version 4.17.0.0 Log output: [INFORMATION] Connected successfully! [INFORMATION] Successfully connected to target (192.168.0.197) [WARNING] No supported container engine found on device. You have to install a supported container engine to use Virtual Control. Please contact the Administrator of the device. [WARNING] Error detecting container architecture [INFORMATION] Finished reading device information [ERROR] Error output: /var/lib/dpkg/info/codesyscontrol.postinst: 88: check_legacy_extensionapi_folder: not found [INFORMATION] Standard output: Selecting previously unselected package codesyscontrol. [INFORMATION] Standard output: (Reading database ... 76772 files and directories currently installed.) [INFORMATION] Standard output: Preparing to unpack .../codesyscontrol_raspberry_4.17.0.0_all.deb ... [INFORMATION] Standard output: Unpacking codesyscontrol (4.17.0.0) ... [INFORMATION] Standard output: Setting up codesyscontrol (4.17.0.0) ... [INFORMATION] Standard output: make config rw [INFORMATION] Standard output: set folder permissions [INFORMATION] Standard output: prepare permissions [INFORMATION] Standard output: check legacy extension api folder [INFORMATION] Standard output: create and install daemon [INFORMATION] Standard output: codesyscontrol started [WARNING] Unable to detect Raspberry Pi Architecture. Setting armv6l as default, you can change this through the settings panel. [INFORMATION] Standard output: codesyscontrol stopped [ERROR] Expected exit value of command failed: expected 0, received 1 [WARNING] Error setting the Raspberry Pi Architecture [ERROR] Error installing codesyscontrol If I read the log correctly the control is actually installed but cannot start. I'm running out of ideas how to proceeed now, any suggestions are welcome.
Last updated: 2025-09-03

Post by imdatatas on The default ramp type selection in SoftMotion V4.18.0.0 is Quadratic ^{CODESYS Forge talk (Post)}
Dear @gseidel, Thank you for your clarification. I fully agree that the quadratic ramp type may have certain technical advantages. However, the main problem is backward compatibility and consistency across projects. In many automation projects, application developers rely on the fact that creating a new axis object will behave exactly the same way as in previous versions. With SoftMotion V4.18.0.0 and later, if an application developer adds an axis and overlooks the changed default, the motion function blocks behave differently than expected. In particular, since the Jerk value in SM3_Basic function blocks is ineffective in trapezoid ramp type, users are accustomed to leaving this parameter empty in their projects. In many existing projects, this variable has not even been assigned. When the default is changed to quadratic, the Jerk parameter suddenly becomes relevant, which can cause errors or unexpected behaviour in the field. From a user perspective, a default setting should always be the “safe” and “expected” option, while alternative options (like quadratic) can be selected manually if desired. Keeping the default as trapezoid ensures compatibility with existing projects and prevents unexpected issues, while still allowing users to benefit from quadratic ramps if they explicitly choose so. For these reasons, I kindly ask you to reconsider making trapezoid the default again. This would significantly reduce the risk of unexpected behaviour in future projects while still preserving the advantages of the quadratic ramp type for those who actively select it. Of course, the final decision is entirely at your discretion. Best Regards, imdatatas
Last updated: 2025-09-26

Post by alessandro on SysMemCmp SysMemCpy ^{CODESYS Forge talk (Post)}
VAR Data1:ARRAY[1..10] OF SINT ; Data2:ARRAY[1..10] OF SINT ; Data3:ARRAY[1..10] OF SINT ; Data4:ARRAY[1..10] OF SINT ; ex_1 : BOOL ; ex_2 : BOOL ; enable : BOOL :=0 ; END_VAR // PROGRAM // The scope of this example is compare and copy the values of two ARRAY only if some value is different using SysMemCmp and SysMemCpy. // In this 2 example we don't use a FOR cicle for do this, and pBuffer1 and pBuffer2 is just a pointer to ARRAY. See details in Library util.SysMem of Codesys // The compare funcion util.SysMem.SysMemCmp is bidirectional if Data1 chanege respect Data2 ex_1 go to 1 and if Data2 change respect Data1 also // but the copy function util.SysMem.SysMemCpy work only from source ARRAY pSrc:=ADR(Data1) to destination ARRAY pDest:=ADR(Data2) // Example 1 Full ARRAY compare and copy // This compare 2 different equal ARRAY and if there is some difference ex_1 go to 1 and if you give enable he copy Data1 in Data2 ex_1 := TO_BOOL(util.SysMem.SysMemCmp(pBuffer1:=ADR(Data1), pBuffer2:=ADR(Data2), udiCount:=SIZEOF(Data1))); IF ex_1 AND enable THEN util.SysMem.SysMemCpy(pDest:=ADR(Data2), pSrc:=ADR(Data1), udiCount:=SIZEOF(Data1)); END_IF // Example 2 Only selected area of the ARRAY compare and copy // This compare 2 different equal ARRAY starting from position number [3] for 4 byte in this case start at position [3] and finish at position number [6] // and if there is some difference only in area [3..6] of the ARRAY ex_2 go to 1 if you give enalbe he copy Data3[3..6] in Data4[3..6] // if something change in other array position[0..2] or [7..10] are ingnored ex_2 := TO_BOOL(util.SysMem.SysMemCmp(pBuffer1:=ADR(Data3[3]), pBuffer2:=ADR(Data4[3]), udiCount:=4)); IF ex_2 AND enable THEN util.SysMem.SysMemCpy(pDest:=ADR(Data4[3]), pSrc:=ADR(Data3[3]), udiCount:=4); END_IF // Attention udiCount input is intended in <byte> in the example 1 I pass to udiCount:=SIZEOF(Data1) for compare and copy the intere ARRAY and // SIZEOF pass the size of intere ARRAY in byte to the function input, in this 2 examples I used variable type SINT each one occupie 1 byte and one position in the ARRAY // and in the example 2 I pass udiCount:=4 for compare and copy only 4 position of Data3/4[3..6] if you want to extend this example and use it for an ARRAY OF WORD // remember that each WORD will occupe 2 byte (16 bit) and you will have to pass udiCount:=SIZEOF(Data1) if you need to compare intere ARRAY example 1 // but need udiCount:=(42) for the example 2 because need to compare and copy 4 word each occupie 2 byte (16 bit). // For REAL (32 bit) need udiCount:=SIZEOF(44) for LREAL or (64 bit) need udiCount:=SIZEOF(416) // a good rule is calculate the dimension of the ARRAY in byte without empty space at the end, multiple of data type number for variable bigger then 8 bit // Example : If you want to create an ARRAY for 5 REAL (32 bit) each occupie 4 byte the correct size is ARRAY[0..19] OF REAL 54=20 position. // NOTE : In the example the position of compare function util.SysMem.SysMemCmp is first and the copy function util.SysMem.SysMemCpy inside the IF is after // in one cycle of the program the two array is compared and if there is some difference and enable are copied. // If you move util.SysMem.SysMemCmp after the IF cycle he will copare the ARRAY in the current cycle but the copy of the value will do in the next cycle.</byte>
Last updated: 2025-10-24

Post by jzhvymetal77 on IecVarAccessLibrary.IBaseTreeNode methon ^{CODESYS Forge talk (Post)}
I had this code working in a previous version of CoDeSys to read variables from a GVL that were added to the Symbol configuration. The problem now is that when I get the _IBaseTreeNode_Parent, it returns a valid interface, but none of the methods or properties work. If you monitor the _IBaseTreeNode in the watch window, it does show the correct child count. However, it fails at step 30, where the child count incorrectly returns zero. In the image, you can see that the watch window displays the correct value that the property should return. Attached is the full project code. FUNCTION_BLOCK Symbols_TO_STR VAR_INPUT i_sPath : STRING(255); i_diIndexChild : DINT; i_diIndexComponent : DINT; END_VAR VAR_OUTPUT q_diChildCount : DINT; q_diComponentCount : DINT; q_sName : STRING(255); q_sValue : STRING(255); q_sType : STRING(80); q_sErrorResult : STRING(80); END_VAR VAR uiStepCopy : UINT; uiStep : UINT; uiStepProcessCopy : UINT; uiStepProcess : UINT; _IBase : IecVarAccessLibrary.IBase; _pIIecVarAccess5 : POINTER TO IecVarAccessLibrary.IIecVarAccess5; _IIecVarAccess5 : IecVarAccessLibrary.IIecVarAccess5; _RTS_IEC_RESULT : IecVarAccessLibrary.RTS_IEC_RESULT; _udiResult : UDINT; _VariableInformationStruct : IecVarAccessLibrary.VariableInformationStruct; _IBaseTreeNode_Parent : IecVarAccessLibrary.IBaseTreeNode; _IBaseTreeNode_Child : IecVarAccessLibrary.IBaseTreeNode; _ITypeDesc_Child : IecVarAccessLibrary.ITypeDesc; _TypeDescAsUnion_Child : IecVarAccessLibrary.TypeDescAsUnion; _arIBaseTreeNode_Child : ARRAY[0..20] OF IecVarAccessLibrary.IBaseTreeNode; _TypeClass_Child : IecVarAccessLibrary.IBaseLibrary.TypeClass; _psSymbolName_Child : POINTER TO STRING; _sSymbolName_Child : STRING(255); _IBaseTreeNode_Component : REFERENCE TO IecVarAccessLibrary.IBaseTreeNode; _TypeClass_Component : IecVarAccessLibrary.IBaseLibrary.TypeClass; _ByteAddress_Component : __XWORD; _ByteOffset_Component : __XWORD; _sArrayIndexName_Component : STRING(20); _diArrayIndexCalc_Component : DINT; _diArrayIndexValue_Component: DINT; _psSymbolName_Component : POINTER TO STRING; _sSymbolName_Component : STRING(255); END_VAR uiStepCopy:=uiStep; uiStepProcessCopy:=uiStepProcess; CASE uiStep OF 10: // GET IBASE FROM CURRENT APP _IBase:= IecVarAccessLibrary.IecVarAccGetFirstInterface2(0); IF _IBase<>0 THEN uiStep:=20; ELSE q_sErrorResult:=CONCAT(UINT_TO_STRING(uiStep), ': IecVarAccGetFirstInterface2'); uiStep:=9000; END_IF 20: //QueryInterface IIecVarAccess5 from IBASE _pIIecVarAccess5 := _IBase.QueryInterface(IecVarAccessLibrary.ITFID_IIecVarAccess5, ADR(_RTS_IEC_RESULT)); IF _pIIecVarAccess5<>0 AND _RTS_IEC_RESULT=0 THEN _IIecVarAccess5 := _pIIecVarAccess5^; uiStep:=30; ELSE q_sErrorResult:=CONCAT(UINT_TO_STRING(uiStep), ': QueryInterface_IIecVarAccess5'); uiStep:=9000; END_IF 30: // Get IBaseTreeNode_Parent _IBaseTreeNode_Parent := _IIecVarAccess5.VarAccGetNode3(ADR(i_sPath), ADR(_VariableInformationStruct), ADR(_RTS_IEC_RESULT)); IF _IBaseTreeNode_Parent<>0 AND _RTS_IEC_RESULT=0 THEN q_diChildCount:=_IBaseTreeNode_Parent.ChildCount; uiStep:=40; ELSE q_sErrorResult:=CONCAT(UINT_TO_STRING(uiStep), ': IBaseTreeNode_Parent'); uiStep:=9000; END_IF 40: // Get IBaseTreeNod_Child IF(q_diChildCount-1>=i_diIndexChild AND i_diIndexChild >=0) THEN _IBaseTreeNode_Child := _IBaseTreeNode_Parent.GetChild(i_diIndexChild); IF _IBaseTreeNode_Child<>0 THEN uiStep:=50; ELSE q_sErrorResult:=CONCAT(UINT_TO_STRING(uiStep), ': IBaseTreeNode_Parent'); uiStep:=9000; END_IF ELSE q_sErrorResult:=CONCAT(UINT_TO_STRING(uiStep), ': i_diIndexChild OutBounds'); uiStep:=9000; END_IF
Last updated: 2025-08-20

Post by ara32 on CODESYS 4 Linux: ^{CODESYS Forge talk (Post)}
Hello! I managed to correctly launch CODESYS Developer Studio 3.5.17, almost all functionality works. The only issue remaining is that when connecting to a device and obtaining its public key, the NCryptEncrypt function is called, which is not fully implemented in the DLL source code, resulting in the connection not being established. Currently, the code of this function in the Wine repository looks like this: SECURITY_STATUS WINAPI NCryptEncrypt(NCRYPT_KEY_HANDLE key, BYTE *input, DWORD insize, void *padding, BYTE *output, DWORD outsize, DWORD *result, DWORD flags) { struct object *key_object = (struct object *)key; TRACE("(%#Ix, %p, %lu, %p, %p, %lu, %p, %#lx)\n", key, input, insize, padding, output, outsize, result, flags); if (flags & ~(NCRYPT_NO_PADDING_FLAG | NCRYPT_PAD_OAEP_FLAG | NCRYPT_PAD_PKCS1_FLAG | NCRYPT_SILENT_FLAG)) { FIXME("Flags %lx not supported\n", flags); return NTE_BAD_FLAGS; } if (flags & NCRYPT_NO_PADDING_FLAG || flags & NCRYPT_PAD_OAEP_FLAG) { FIXME("No padding and oaep padding not supported\n"); return NTE_NOT_SUPPORTED; } if (key_object->type != KEY) return NTE_INVALID_HANDLE; return map_ntstatus(BCryptEncrypt(key_object->key.bcrypt_key, input, insize, padding, NULL, 0, output, outsize, result, flags)); } The program crashes due to the NCRYPT_PAD_OAEP_FLAG flag. I'm not proficient in C++, but I attempted to add handling myself, and here's the result: SECURITY_STATUS WINAPI NCryptEncrypt(NCRYPT_KEY_HANDLE key, BYTE *input, DWORD insize, void *padding, BYTE *output, DWORD outsize, DWORD *result, DWORD flags) { struct object *key_object = (struct object *)key; TRACE("(%#Ix, %p, %lu, %p, %p, %lu, %p, %#lx)\n", key, input, insize, padding, output, outsize, result, flags); if (flags & ~(NCRYPT_NO_PADDING_FLAG | NCRYPT_PAD_OAEP_FLAG | NCRYPT_PAD_PKCS1_FLAG | NCRYPT_SILENT_FLAG)) { FIXME("Flags %lx not supported\n", flags); return NTE_BAD_FLAGS; } if (flags & NCRYPT_NO_PADDING_FLAG) { FIXME("No padding not supported\n"); return NTE_NOT_SUPPORTED; } BCRYPT_OAEP_PADDING_INFO oaepInfo = { 0 }; oaepInfo.pszAlgId = BCRYPT_SHA1_ALGORITHM; NTSTATUS status = BCryptEncrypt(key_object->key.bcrypt_key, input, insize, &oaepInfo, NULL, 0, output, outsize, result, flags); if (key_object->type != KEY) return NTE_INVALID_HANDLE; return map_ntstatus(BCryptEncrypt(key_object->key.bcrypt_key, input, insize, padding, NULL, 0, output, outsize, result, flags)); } Now, when calling the connection, it crashes with the error "bcrypt:BCryptEncrypt flags 0x4 not implemented." Can anyone help with enhancing this functionality or at least point me in the right direction?
Last updated: 2024-03-22

Post by davidbo on Clean old license into an image SD ^{CODESYS Forge talk (Post)}
That might not be enough using CODESYS V3.5 SP20 and CODESYS Control for Raspberry Pi MC SL version: 4.11 I deleted .cmact_license directory. I installed new license and the dialog box said it was done successfully, but in reality it was not. What more should be deleted 5:/var/opt/codesys$ ls -la total 1948 drwxr-xr-x 10 root root 4096 Nov 17 12:29 . drwxr-xr-x 5 root root 4096 Jul 30 2020 .. -rw-r--r-- 1 root root 100014 Nov 17 12:08 .Audit_0.log -rw-r--r-- 1 root root 100040 Nov 17 11:30 .Audit_1.log -rw-r--r-- 1 root root 100062 Nov 17 09:18 .Audit_2.log -rw-r--r-- 1 root root 66260 Nov 17 12:36 .Audit.log drwxr-xr-x 2 root root 4096 Mar 30 2020 backup -rw-r--r-- 1 root root 2640 Feb 22 2024 bacstac.ini drwxr-xr-x 4 root root 4096 Mar 30 2020 cert drwxr-xr-x 2 root root 4096 Nov 17 12:29 .cmact_licenses drwxr-xr-x 2 root root 4096 Mar 30 2020 _cnc -rw-r--r-- 1 root root 1000088 Nov 17 08:35 codesyscontrol_0.log -rw-r--r-- 1 root root 422521 Nov 17 12:30 codesyscontrol.log -rw-r--r-- 1 root root 355 Nov 17 12:29 .GroupDatabase.csv -rw-r--r-- 1 root root 355 Nov 17 12:19 .GroupDatabase.csv_ drwxr-xr-x 3 root root 4096 Nov 17 11:16 OPCUAServer drwxr-xr-x 6 root root 4096 Mar 30 2020 .pki drwxr-xr-x 9 root root 4096 Nov 17 11:16 PlcLogic -rwxr-xr-x 1 root root 156 Mar 30 2020 rts_set_baud.sh -rw-r--r-- 1 root root 20736 Feb 22 2024 .SoftContainer_CmEmbedded.wbb -rw-r--r-- 1 root root 12445 Nov 17 09:06 SysFileMap.cfg -rw-r--r-- 1 root root 1983 Feb 22 2024 .UFC_SoftContainer_CmEmbedded.WibuC mLif -rw-r--r-- 1 root root 646 Nov 17 09:51 .UserDatabase.csv -rw-r--r-- 1 root root 646 Nov 17 09:51 .UserDatabase.csv_ -rw-r--r-- 1 root root 17305 Nov 17 12:29 .UserMgmtRightsDB.csv drwxr-xr-x 2 root root 4096 Mar 30 2020 visu -rw-r--r-- 1 root root 32684 Feb 8 2023 WibuCtxt.ctx
Last updated: 2025-11-17

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