Post by manuknecht on Using an Axis of an Axis Group in Torque Conctrol ^{CODESYS Forge talk (Post)}
I don't seem to be able to use an axis, which is part of an Axis Group in torque control mode. I call the SMC_SetControllerMode FB to switch from position to torque control mode, followed by the SMC_SetTorque FB to set the desired torque. This works flawlessly for most axes, however if an axis is part of an axis group, switching the controller mode seems to work without any issues, but the desired torque is never set. SMC_SetTorque does not return an error, but fSetTorque of the axis is never changed. Disabling the axis group before does not change anything, but if I use MC_UngroupAllAxes before changing the controller mode, it all works as it should. Is there no way to control a single axis in torque control, if it is part of an axis group?
Last updated: 2025-07-17

Post by toby on Ethercat Servo Setup ^{CODESYS Forge talk (Post)}
Hi everyone, so a little update to this, I've come back to this project in the new year, and got it working. Yeah!, However, now with the new licensing setup, I need a new SoftMotion license, but it doesn't seem to be compatible with the previous Raspberry Pi SL license. Has anyone had any luck with Raspberry Pi and SoftMotion_Lite? Specifically the licensing of such? My customers new installation needs to be rebooted every 30min which is causing headaches! Another option is to not use the SoftMotion function blocks, and control the EtherCat amplifier directly, but I'm not sure how to do so. Does anyone have a specific example project of how to control a servo without the use of the SoftMotion function blocks? Thanks everyone for any assistance rendered. It's very much appreciated! Toby
Last updated: 2024-01-10

Post by idalu on Profinet PN_Controller Issue, Network Adapter ^{CODESYS Forge talk (Post)}
i have a problem with Profinet on my project. I'm using Codesys RTE 3.5.19.50. When i download program to controller the ethernet is ok, PN_Controller is ok but every device i'm trying to connect is red with error "DCP no RealStationName". When i'm trying to Scan for Devices on PN_Controller there are no devices found. I have installed Codesys driver CmpEt1000Drv to my network adapter (i'm sure it is right intel pro 1000 model). I have noticed that when i installed codesys driver i'm no longer able to ping this network adapter (i can ping it when intel driver is installed). On my previous projects with runetimes i can ping it even with codesys driver installed. I have also tried to do downgrade of everything to version 3.5.19.20 and it not helped.
Last updated: 2024-01-17

Post by tokamk on Dynamic setting of the modbus tcp/ip slave ip address ^{CODESYS Forge talk (Post)}
Hello, I'm working on a project which includes Panel-PC which communicates with a PLC through Modbus TCP/IP. On the PLC I have a CODESYS code which has Modbus slave objects. The Modbus slave objects have to have manually set IP address in order for them to work properly and the Ip address has to be the PC-Panels's IP. This project is going to a customer and they're using their own IP address realm. So, my question is that is it possible to configure these slaves in some other way, so that the customer doesn't need to modify the CODESYS project? I was thinking that would it be possible to set the IP address of these slaves from external source?
Last updated: 2024-02-15

Post by nilesh on Request for Assistance with Online Logic Changes in PLC System using Codesys ^{CODESYS Forge talk (Post)}
Dear Sir, We are writing to seek guidance regarding our current situation with the Opto 22 Groov EPIC PR1 PLC system. Over the past year, we have successfully downloaded and implemented logic using Codesys, and the PLC has been operational without issues. However, we now require minor modifications to the logic. Despite attempting to upload the modified logic, we are unable to see the "online change" option, prompting us to consider a direct logic download. Our concern is that during this process, certain digital outputs or analog outputs might momentarily disrupt operations, which is unacceptable given the system's continuous 24x7 operation. We have explored online changes in other PLC systems, but due to the absence of the last downloaded backup, we are unable to proceed confidently.
Last updated: 2024-03-01

Post by vernon-laurence on EtherCAT fieldbus ^{CODESYS Forge talk (Post)}
The simplest way to do this would be to add a bus coupler dedicated to the expansion IO. The EtherCAT network does not fault when modules connected to the expander are not present. In the image below, nothing below the red line is present in the network - with the network working correctly. In your "base" project, simply include all of the possible modules, and then plug them in as you add pumps to the system. I would also highly recommend against the use of direct addressing. There are other methods to accomplish this, including using the "Optional" checkbox for modules and explicitly addressing them. Although, this would require more upfront work to design the network, and some additional work each time modules were added. https://content.helpme-codesys.com/en/CODESYS%20EtherCAT/_ecat_edt_slave_slave.html
Last updated: 2024-04-09

Post by danwoodlock on Rpi zero w lost license after 4.11 update ^{CODESYS Forge talk (Post)}
Hello all, Encountered an issue with my zero which seems to have happened after the 4.11 update. It now runs in demo mode (2hr) and I am trying to see what the appropriate steps are prior to contacting codesys directly. Background: I recently did a fresh install of w11 on my pc, so it seems "c:\ProgramData\CODESYS\Licenses\" only has information related to my pi5, which I licensed just this past Friday. I have all my license documentation about my rpi zero as far as the emails received, but when I try to claim using the ticket number it says its already been used, or something to that effect, which it was. Currently trying to perform device license reader, which is taking some time.
Last updated: 2024-04-14

Post by bjarne-pagaard on Codesys v3.5 Sint to byte ^{CODESYS Forge talk (Post)}
Hi A SINT is a short (signed) integer. It is already only 1 byte - so you should have no problem casting it to a byte like so: bMyByte := TO_BYTE(sintMyShortInt); If you have a regular INT you want to put in 2 bytes - there are a lot of ways you can do this. A Union is certainly one of them. You could have a union with 2 memebers: An array of 2 bytes as one member, and an integer value as another member. Another way would be to look at MEMCPY to put the value into your CAN-message. .. or create a function to take your input value as input, and giving you 2 individual bytes as output. This could be handy if you need to change the byte-order. Integer data types: https://help.codesys.com/webapp/_cds_datatype_integer;product=codesys;version=3.5.17.0 -Bjarne
Last updated: 2024-04-24

Post by peterned on CNC - system goes to X=0 Y=0 before CNC file execution starts, how to avoid that? ^{CODESYS Forge talk (Post)}
Hi, I have a XY system and use a CNC file to move it. Everything works OK, except for the following: when CNC execution starts, the system rushes at high speed to (X=0, Y=0) point, and only then goes to the first line of the CNC file. If one of the axes is near 0, the system jumps and immediately stops with an error. In the CNC file settings (screenshot attached) I specified low default values for speed/acceleration and a start position different from 0,0 - but all that is ignored. Any idea how to avoid that move to 0,0 ? Thanks.
Last updated: 2024-04-26

Post by salvadegianluca on SysPlcCtrl23 and C0338: The library 'cmperrors interfaces, 3.5.5.0 (system)' is supported just in 32 bit applications ^{CODESYS Forge talk (Post)}
Good afternoon to everyone; I'm stuck with this error and I don't know how to get out from it... I tried several time googling for alternative systems to control the PLC applications and resets but without success. I would like to realize the possibility to reset the CPU and to start/stop the applications as it was possible with the SysPlcCtrl23, but this library is no longer supported in 64 bit systems and it seems due to the cmperrors interfaces sub library that was included in the above said one. Someone found a work around for this issue?
Last updated: 2024-06-14

Post by salvadegianluca on SysPlcCtrl23 and C0338: The library 'cmperrors interfaces, 3.5.5.0 (system)' is supported just in 32 bit applications ^{CODESYS Forge talk (Post)}
Good afternoon to everyone; I'm stuck with this error and I don't know how to get out from it... I tried several time googling for alternative systems to control the PLC applications and resets but without success. I would like to realize the possibility to reset the CPU and to start/stop the applications as it was possible with the SysPlcCtrl23, but this library is no longer supported in 64 bit systems and it seems due to the cmperrors interfaces sub library that was included in the above said one. Someone found a work around for this issue?
Last updated: 2024-06-14

Post by salvadegianluca on SysPlcCtrl23 and C0338: The library 'cmperrors interfaces, 3.5.5.0 (system)' is supported just in 32 bit applications ^{CODESYS Forge talk (Post)}
Good afternoon to everyone; I'm stuck with this error and I don't know how to get out from it... I tried several time googling for alternative systems to control the PLC applications and resets but without success. I would like to realize the possibility to reset the CPU and to start/stop the applications as it was possible with the SysPlcCtrl23, but this library is no longer supported in 64 bit systems and it seems due to the cmperrors interfaces sub library that was included in the above said one. Someone found a work around for this issue?
Last updated: 2024-06-14

Post by salvadegianluca on SysPlcCtrl23 and C0338: The library 'cmperrors interfaces, 3.5.5.0 (system)' is supported just in 32 bit applications ^{CODESYS Forge talk (Post)}
Good afternoon to everyone; I'm stuck with this error and I don't know how to get out from it... I tried several time googling for alternative systems to control the PLC applications and resets but without success. I would like to realize the possibility to reset the CPU and to start/stop the applications as it was possible with the SysPlcCtrl23, but this library is no longer supported in 64 bit systems and it seems due to the cmperrors interfaces sub library that was included in the above said one. Someone found a work around for this issue?
Last updated: 2024-06-14

Post by salvadegianluca on SysPlcCtrl23 and C0338: The library 'cmperrors interfaces, 3.5.5.0 (system)' is supported just in 32 bit applications ^{CODESYS Forge talk (Post)}
Good afternoon to everyone; I'm stuck with this error and I don't know how to get out from it... I tried several time googling for alternative systems to control the PLC applications and resets but without success. I would like to realize the possibility to reset the CPU and to start/stop the applications as it was possible with the SysPlcCtrl23, but this library is no longer supported in 64 bit systems and it seems due to the cmperrors interfaces sub library that was included in the above said one. Someone found a work around for this issue?
Last updated: 2024-06-14

Post by salvadegianluca on SysPlcCtrl23 and C0338: The library 'cmperrors interfaces, 3.5.5.0 (system)' is supported just in 32 bit applications ^{CODESYS Forge talk (Post)}
Good afternoon to everyone; I'm stuck with this error and I don't know how to get out from it... I tried several time googling for alternative systems to control the PLC applications and resets but without success. I would like to realize the possibility to reset the CPU and to start/stop the applications as it was possible with the SysPlcCtrl23, but this library is no longer supported in 64 bit systems and it seems due to the cmperrors interfaces sub library that was included in the above said one. Someone found a work around for this issue?
Last updated: 2024-06-14

Post by matt-purcell on Which Lib to use, connect to a socket with URL instead of IP address ^{CODESYS Forge talk (Post)}
Hello, I have a new project and I need to connect to a TCP socket using the URL instead of an explicit IP address, myendpoint@mydomain.com Which library is best suited for this? This is for a new enterprise project, the endpoint is a server in a datacenter running some real time application. We have big IP, it will automatically reassign the IP address to the backup server if a crash occurs so an explicit IP won't work for me. I've done this in RS logix, working now to migrate that code over to codesys. Thanks in advance!
Last updated: 2024-06-17

Post by fari on Configure J1939 I/O Mapping via Scripting ^{CODESYS Forge talk (Post)}
Hi everyone, With the latest version of Codesys, it’s now possible to import DBC files directly into the J1939 Manager, which is great. However, I’m trying to achieve the same thing programmatically and can’t find any scripting functions related to import_dbc or any host_parameter that would let me configure PGNs and signal mappings automatically. So far, I’ve managed to add the J1939 Manager and an ECU, and I can pass the DBC database to it, but I’m stuck when it comes to adding the signals. Has anyone figured out if this can be done through scripting? (Attached is an illustration of what I am trying to accomplish programmatically). Thanks in advance.
Last updated: 2025-10-24

Post by bitor-leao on *EXCEPTION* [ProsessorLoadWatchdog] codesys 3.5.11.40 ^{CODESYS Forge talk (Post)}
Good night. I am having a problem with CODESYS 3.5.11.40, which gives the exception EXCEPTION [ProcessorLoadWatchdog]. I followed some forum posts and tried to modify the CODESYSControl.cfg file, but it shows: [SysFile] Windows.WorkingDirectory=C:\ProgramData\CODESYS\CODESYSControlWinV3\D5050FE1 Then I go to this directory and try to modify CODESYSControl.cfg according to the forums, but it doesn’t work: [CmpSchedule] ;EnableLogger=0 ProcessorLoad.Maximum=80 ;Timeslicing.Mode=Internal ;Timeslicing.PlcSlicePercent=80 ;Timeslicing.PlcSliceUs=4000 ;Timeslicing.StartOnProcessorLoad=1 ;SchedulerPriority=5 ;SchedulerInterval=1000 I tried to change ProcessorLoad.Maximum to 0 or 100, but it doesn’t compile when I try. I really don’t know what to do,
Last updated: 2025-11-16

Post by bitor-leao on *EXCEPTION* [ProsessorLoadWatchdog] codesys 3.5.11.40 ^{CODESYS Forge talk (Post)}
Good night. I am having a problem with CODESYS 3.5.11.40, which gives the exception EXCEPTION [ProcessorLoadWatchdog]. I followed some forum posts and tried to modify the CODESYSControl.cfg file, but it shows: [SysFile] Windows.WorkingDirectory=C:\ProgramData\CODESYS\CODESYSControlWinV3\D5050FE1 Then I go to this directory and try to modify CODESYSControl.cfg according to the forums, but it doesn’t work: [CmpSchedule] ;EnableLogger=0 ProcessorLoad.Maximum=80 ;Timeslicing.Mode=Internal ;Timeslicing.PlcSlicePercent=80 ;Timeslicing.PlcSliceUs=4000 ;Timeslicing.StartOnProcessorLoad=1 ;SchedulerPriority=5 ;SchedulerInterval=1000 I tried to change ProcessorLoad.Maximum to 0 or 100, but it doesn’t compile when I try. I really don’t know what to do,
Last updated: 2025-11-16

Post by gseidel on Absolute movement controlled by an external encoder. ^{CODESYS Forge talk (Post)}
Hi polyautomacao, basically, there are two ways to approach this. My first choice would be to check whether your servo drives supports an external encoder, connect the encoder to the servo and configure the servo accordingly. In this case, you would not need to change anything in the CODESYS application. If that is not an option, you could use SM_DrivePosControl, a drive that closes the position loop in the PLC, and feed it with the external encoder positions. See (0). You can switch your servo drive to velocity control mode (SMC_SetControllerMode) and use SMC_FollowVelocity to apply the fSetVelocity of the SM_DrivePosControl to your servo. The MC_MoveAbsolute can then be performed on the SC_DrivePosControl Hope that helps. (0) https://content.helpme-codesys.com/en/CODESYS%20SoftMotion/_sm_example_poscontrol.html Best regards, Georg
Last updated: 2026-03-04

Post by kurt9 on ReadWriteEEprom FB question ^{CODESYS Forge talk (Post)}
I want to programmatically write the alias address to a new EtherCAT slave when I plug it into my IPC EtherCAT network. I am looking at the ReadWriteEEprom FB and see that one of the elements is "pbyData". which is the pointer to byte that is usually set to 2048 bytes. Since I am setting the alias address to the EEprom only (EEprom address 16#0012), I would assume that what I am writing is 2 bytes only. Does the pbyData have to be specified as ADR(myArray) where "myArray" is the 2 bytes of the alias address? How is the best way to set this element of the function block? Thanks in advance
Last updated: 2026-05-18

Post by cer-wa on Not able to connect multiple profinet encoder in codesys Linux ARM64 ^{CODESYS Forge talk (Post)}
Hello, currently im working with a RevPi connect 5 on a codesys project. Up until now I was having a blast because things were going really smooth but for like almost a day im kind of stuck on the integration of multiple profinet sensors into my project. This is kind of a bummer because that should be an easy thing to do. What I tried so far was to create and additional ethernet adapter where I then tried to connect my devices. in the beginning I tried to connect the devices directly which was not working because I could assign the IP-adress only to the ethernet adapter and not to the devices but the device was found in the device repository (this gets important in the second part) So what I tried next was to setup a PN-Controller and connect my devices subsequently to the Controller. Sadly now the devices wont show up in the device repository anymore. To me its not clear why this is happening. And the worst thing is: I went ahead and setup a device completely like I would want to have it in the project and when I then click on scan devices I can even find the device. But it can not be added to project for whatever reason eventhough im 100% certain that the gsdml file is the correct one. Can anyone help me with this. Like I said this seems like an easy thing to do and its taking me way longer than expected already. The only thing that came to my mind why this might not work is because I have codesys license which only allows one profinet instance. Could that be the case? The error message seems then pretty unfit but ok. I will be grateful for every advice. Thanks in advance! Best regards!
Last updated: 2025-09-25

Post by mattplc on OPC UA Codesys 3.5 Symbolkonfiguration VS Kommunikationsverwalter und Python/UA-Expert ^{CODESYS Forge talk (Post)}
Hallo, bisher war die Benutzung der Symbolkonfiguration für die OPC-UA Variablen recht easy einsetzbar. Im UAExpert Tool konnte man im Klarnamen den String sehen. var1 = client.get_node("ns=4;s=|var|WAGO 750-8212 PFC200 G2 2ETH RS.Application.PLC_PRG.fbTest.StateActual") Die Anbindung an die Python opcua Library hat so eigentlich gut funktioniert. Auch zum debuggen im UAExptert, konnte man den Value so sehen wie die Varibale heißt. In meinem Fall ein Enum. Was seit längerer Zeit nicht mehr funktionier ist das eingeben von Enums. Im UAExpert kommt die Fehlermeldung "BadTypeMismatch" früher war das nicht der Fall. Da die Symbolkonfiguration demnächst bei Codesys 3.5 rausfällt, wollte ich den Kommunikationsverwalter nutzen. Jetzt schaut der String mit der Node ID komplett anders aus. Bsp.: NS5|Opaque|0x01000000A6E12A718AF7333ABAFA2D7686EF27669CF33071C7D034759DE601779DF62178E9 Hier sieht man den Value gar nicht mehr im UA Expert. In Python finde ich auch keine Möglichkeit die OPC UA Variable einzulesen. Python: var1 = client.get_node("ns=5;s=|var|0x01000000A6E12A718AF7333ABAFA2D7686EF27669CF33071C7F016759BDC7114.PLC_PRG.fbTest.sVar_1") Weiß jemand wir das in Zukunft läuft? ich hab etwas das Gefühl, das die Übergeordneten Systeme die OPC UA Variablen nicht mehr so einfach einlesen können oder mache ich etwas falsch? Danke
Last updated: 2025-01-14

Post by wollvieh on Display minutes as hours & minutes ^{CODESYS Forge talk (Post)}
Here a code for an Operation Counter with : days,hours,minutes,seconds as an example, maybe it points you the right direction ? FUNCTION_BLOCK OperationDayHour VAR_INPUT IN : BOOL; // Betrieb Takt : BOOL; // 1Hz Systemtakt END_VAR VAR_OUTPUT BetrTag : UDINT; // Ausgabe Betriebstage Betrstd : UDINT; // Ausgabe Betriebsstunden Betrmin : UDINT; // Ausgabe Betriebsminuten Betrsec : UDINT; // Ausgabe Betriebsekunden BetrString : STRING; // Ausgabe als String END_VAR VAR ///Erkennung Taktflanke Flanke: R_TRIG; END_VAR VAR_IN_OUT BetrsecAbsolut: UDINT; //Ein/Ausgangsvariable Betriebssekunden RETAIN !!! END_VAR Flanke(CLK:= Takt, Q=> ); (*Erkennung Taktflanke*) IF (IN AND Flanke.Q) THEN (*Sekunden hochzählen*) BetrsecAbsolut := BetrsecAbsolut + 1; END_IF Betrsec := BetrsecAbsolut MOD 60; Betrmin := ( BetrsecAbsolut / 60) MOD 60; Betrstd := ( BetrsecAbsolut / 60 / 60 ) MOD 24; BetrTag := ( BetrsecAbsolut / 60 / 60 /24 ); BetrString := RIGHT ( UDINT_TO_STRING( BetrTag + 100000),5); BetrString := CONCAT (BetrString, 'd_'); BetrString := CONCAT (BetrString,RIGHT ( UDINT_TO_STRING( Betrstd + 100000),5)); BetrString := CONCAT (BetrString, 'h_'); BetrString := CONCAT (BetrString, RIGHT ( UDINT_TO_STRING( Betrmin + 100),2)); BetrString := CONCAT (BetrString, 'm_'); BetrString := CONCAT (BetrString, RIGHT ( UDINT_TO_STRING( Betrsec + 100),2)); BetrString := CONCAT (BetrString, 's');
Last updated: 2024-05-27

Post by cdutz on Problems connecting to Codesys 4.9.0.0 runtime on my Wago PFC200 ^{CODESYS Forge talk (Post)}
Turns out I managed to get a connection to my PLC. It seems that a few weeks ago Wago released something with version 4.3.3(25). So I reset my PLC to Factory-Reset, set it to the 192.168.1.17 IP and changed the IP to the one I wanted with the Wago EthernetSettings tool. Then updated the latest firmware using the WAGOupload tool. Now the PLC came back up without a PLC runtime running, so in the Web-tool I wen't to the "Configuration"/"PLC Runtime" and selected the runtime version "CODESYS V3". I uninstalled all Codesys versions and installed the version from the download package of Wago together with all the packages the bundle provided. After creating a new project I didn't select the old PFC200 runtime, but one of the dozens of new device profiles, that it now listed. With these settings I was then able to connect to my PLC. Now I hope I'll get the existing project that I had ported to this new structure. Sorry for the noise. Chris
Last updated: 2023-08-26

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