Post by eschwellinger on search runtime 4.9.0.0 for pi 3 ^{CODESYS Forge talk (Post)}
sorry I missed to say how to do this just update the runtime. (extract latest debian package out of the CODESYS package) but 8n this case an update all to the latest version including CODESYS is probably the easiest option now.
Last updated: 2025-10-26

Post by gcodejedi on The element of type 'VisuFbElemImage' could not be updated. Reason: Index was outside the bounds of the array. ^{CODESYS Forge talk (Post)}
Hello, I am experiencing this exact same issue. Were you able to get yours resolved? If so, would you mind sharing the solution you discovered? Thanks!
Last updated: 2025-11-03

Post by davidbo on What is the prerequisites for a Raspberry Pi to work with SysSockSetIpAddressAndNetMask() ^{CODESYS Forge talk (Post)}
I have done: systemctl stop dhcpcd sudo ip addr flush dev eth0 sudo ip link set eth0 up but a call to SysSockSetIpAddressAndNetMask does not give the eth0 an IP address Why?
Last updated: 2025-11-04

Post by kalmeyer on Stepper motor control with (SM_Drive_RaspStepper_direct) ^{CODESYS Forge talk (Post)}
Is there perhaps a place where I can see examples of programming with different instructions? This would be a great help. Maybe there are some places where ready-made programs are posted that can be downloaded and tested? /Klaus
Last updated: 2025-11-10

Post by nano on conformation about the CODESYS Extends SL and CODESYS SDK ^{CODESYS Forge talk (Post)}
as an oem i can tell you, extension sl isn't the sdk. its more an hard restricted part of it with much missing parts. why u may ask this?
Last updated: 2025-11-11

Post by jonasz on Deploy LicenseServer for Linux SL ^{CODESYS Forge talk (Post)}
After carefully studying the documentation, I have a question: is a second hardware-independent time source required for the correct operation of the VirtualSafety system?
Last updated: 2025-11-17

Post by gseidel on STEPPER CODESYS SOFTMOTION_DRIVE ^{CODESYS Forge talk (Post)}
Hi kalmeyer, I would recommend to have a look at these examples. They come with a project and a description: https://content.helpme-codesys.com/en/CODESYS%20SoftMotion/_sm_basic_examples_single_axis.html. Best regards, Georg
Last updated: 2025-11-28

Post by aldo on Access to the path *** is denied ^{CODESYS Forge talk (Post)}
Hello, this has been happening to me too since I updated to SP21 Patch 4. It seems the problem is on my main computer (Desktop) but not on the laptop. Has anyone found the cause? Thanks
Last updated: 2025-12-10

Post by mil581 on Modbus TCP Server connection is ESTABLISHED but all holding registers are value 0? ^{CODESYS Forge talk (Post)}
Hello everyone! I'm facing a weird issue with CODESYS Control Win V3 x64 on a fresh Windows install. The situation is as follows: CODESYS Modbus TCP Server (Slave) is running and I can see live values in the mapping display of Modbus settings: GVL (e.g., 32, 42, 50). Port 502 is LISTENING according to netstat. When connecting via Modbus Poll or Node-RED, the connection status changes to ESTABLISHED and everything reports as fine. The Problem: Despite the successful connection, all holding registers return 0 no matter what. It's like the OS accepts the TCP handshake, the request counter goes up but the data payload never reaches Modbus Client (in this case Node-RED or Modbus Poll). Quick Stats: Firewall: Completely OFF. Unit ID: Verified & Matching. IP: Tried 127.0.0.1 and 192.168.0.1. Interface: Correctly bound in Ethernet Device settings. I already tried absolutely everything from changing IP address, subnet, port, deleting the project and starting new one and even nuking my old Windows install. Since I am near completion of my bachelor thesis only thing left for me to do is connect SoftPLC to NodeRED via Modbus but this issue is driving me crazy for weeks. I do not know what to do anymore.
Last updated: 2025-12-25

Post by timvh on High resolution displays with 150% scaling causes CodeSys IDE to be blurry ^{CODESYS Forge talk (Post)}
Instead of using scaling of 150%, can't you adjust your diplay resolution (Windows+i keys, then go to System > Display settings)?
Last updated: 2026-01-07

Post by mawaloc on KeyPad Function in Visualization to fill a table ^{CODESYS Forge talk (Post)}
THANK you !!! I finally find ou... may be not with same thing " use template" , so will looks your way of doing, maybe it's more properly done anyhow thank you
Last updated: 2026-01-08

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)}
Thank you very much, What FESTO provides should work even if I use another PLC (WAGO) that is not from FESTO?
Last updated: 2026-06-30

Post by reinier-geers on Data to server ^{CODESYS Forge talk (Post)}
HI, i want to copy data to a server of a costumor. Whats the easy way ? contoller is V20p5 but also 2 are V9.2
Last updated: 2025-11-11

Post by mariusz997 on Visualisation - internal error ^{CODESYS Forge talk (Post)}
Hi - problem solved. I had 3 version of codesys on system and they didn't like each other. After uninstall all and install again only one version now everything is OK
Last updated: 2025-11-12

Post by grepoo on DataSource CodesysApp V3 ^{CODESYS Forge talk (Post)}
Hi, trying to create a datasource in appV3 but it returns error code 259 (not nearer specified) everytime, no matter the device i am using. Any idea of what it might signify ?
Last updated: 2025-11-19

Post by seler on Custom button with output status ^{CODESYS Forge talk (Post)}
I did some work around by adding IN switch on top of OUT bulb picture(SwitchImage) and setting IN switch button to invisible but this is not quite elegant. How to combine it to one visu element?
Last updated: 2025-11-20

Post by bertus on Can't get SMC_SmoothPath to work ^{CODESYS Forge talk (Post)}
Hi Georg, thanks for your time. What is the value of D_ANGLE_TOL? It is set to 0.01. Do you need the assignment bAbort := NOT bDecoder? Does it help to leave it out? This seems to make no difference. Any errors (e.g. SMC_SmoothPath.Error/ErrorID) or PLC log messages? No errors or log messages. What if you comment out SMC_SmoothMerge and SMC_LimtiDynamics, is corner smoothing still not working? Indeed. Is bDecode written from a different task (e.g. visu)? Then I would recommend to assign to a local variable (bDecodeLocal := bDecode) and use that for all FBs. Otherwise, FBs might see different values of bDecode in a single cycle, which will cause problems. It is a local variable, written from a state machine inside this program. But there is new information: During some trial and error, I tried skipping "stage 2: merge short linear segments" (SMC_SmoothMerge). And suddenly it rounds the corners, see attached image. Looking a bit closer, I noticed that (with the original program) after a download (cold start?), it in fact did round the corners, but only once. Ever next cycle in which the NC program was executed, the corners where not rounded. Not sure if there is any relation, but SMC_SmoothMerge is also the only FB which has no bAbort input. Perhaps I need to reset it (or any buffers) by other means?
Last updated: 2025-12-18

Post by bmatlove on Re-create CoE online window in Visu ^{CODESYS Forge talk (Post)}
Hello, I am trying to re-create the CoE online window within a Visu for purposes of checking and interacting with device parameters occasionally for maintenance purposes. To minimize reliance on using the IDE for misc interactions. Ideally, I would like to exactly mimic the CoE online window within the IDE. I assume that it uses a few tricks to minimize overhead, such as only polling registers which are within the visual scope, for example. I'm afraid it might be too much to ask for a pre-built drop-in Visu module to exist for this task. Do I have any options aside from manually re-creating all the logic to do this, relying heavily on SdoInfo function blocks? Is there a way for me to reference the device ESI file to shortcut the process of determining how many registers there are and getting the address for each?
Last updated: 2025-12-27

Post by fredashbolt on Dynamically Update JSON Payload ^{CODESYS Forge talk (Post)}
I am trying to generate a JSON payload populated with a value that updates for use with a telemetry system, the payload is to be published by MQTT. I have established the MQTT client and can publish a working JSON payload but I can't get the payload to update as the value (iValue) changes. I am using a timer to trigger the .SetValue function periodically, but the JSON will only give the value as it is when it is first initialized using xFirst IF statement. Any suggestions? Thanks VAR pJsonData : POINTER TO JSON.JSONData := factory.Create(); fb_JBuilder : JSON.JSONBuilder; diRootIndex, diObject1Index : DINT; iValue : INT := 10 ; jsonArrayWriter : JSON.JSONByteArrayWriter; wsJsonData : WSTRING(1000); xFirst : BOOL := TRUE; utf8JsonData : STRING(2000); diTempVal : DINT ; PublishTimer : TON ; END_VAR IF xFirst = TRUE THEN fb_JBuilder ( pJsonData := pJsonData , diRootObj => diRootIndex ) ; diObject1Index := fb_Jbuilder.SetKeyWithObject ( "Device" , diParentIndex := diRootIndex ) ; diTempVal := fb_Jbuilder.SetKeyWithValue ( "Temp" , iValue , diParentIndex := diObject1Index ) ; xFirst := FALSE ; END_IF PublishTimer ( IN := PublishTimer.Q = 0 , PT := T#5S ) ; IF PublishTimer.Q THEN fb_JBuilder.SetValue ( iValue , diTempVal ) ; END_IF jsonArrayWriter( xExecute := PublishTimer.Q , pwData := ADR(wsJsonData), udiSize := SIZEOF(wsJsonData), jsonData := pJsonData^, xAsyncMode := FALSE ) ; JSON.Stu.ConvertUTF16toUTF8( ADR ( wsJsonData ) , ADR ( utf8JsonData ) , SIZEOF ( utf8JsonData ) , bStrictConversion := TRUE ) ;
Last updated: 2026-03-10

Post by mrkm-dic on UC20-M4000 Redundancy – Application is not automatically synchronized and redundancy breaks after online change ^{CODESYS Forge talk (Post)}
Hello, I am currently testing redundancy using two UC20-M4000 controllers with CODESYS Control SL. The basic redundancy functionality (Active/Passive switching and failover) works, but I am experiencing problems when updating the application. Environment Controller: Weidmüller UC20-M4000 OS: u-OS Runtime: CODESYS Control SL 4.12.1.0-1 Redundancy link: dedicated Ethernet connection between the two controllers Time synchronization: NTP configured, time difference between controllers is about 1–2 seconds Current behavior Application synchronization When I download a modified application to PLC1 (Active controller), the application is not automatically copied to PLC2 (Passive controller). However, when I perform a path swap, the application download to PLC2 starts automatically. My expectation was that the Passive controller would automatically receive the updated application after downloading to the Active controller. Online change When performing an online change, redundancy is lost and the controllers switch to Standalone mode. Typical log messages include: RedundancySynchronize called Redundancy failover itself works correctly. The application boot project exists on both controllers (Application.app and Application.crc). Network interfaces are up and correctly configured. Question Is this behavior expected when updating the application in a redundant UC20-M4000 setup? Should the Passive PLC automatically receive the updated application, or is manual synchronization required? Any advice or recommended configuration for stable redundancy during online change and application download would be greatly appreciated. Thank you.
Last updated: 2026-03-16

Post by bdschnapp on OPC-UA ApplicationUri / ProductUri ^{CODESYS Forge talk (Post)}
Were you able to figure out if it is possible to change the Application/Product URI of your server? I am having the same problem.
Last updated: 2026-03-16

Post by hannibal on Codesys Trend - setting Y axis minimum and maximum as variables - error ^{CODESYS Forge talk (Post)}
Hi, It was my fault. I was using a REAL variable instead of INTEGER. Sorry for posting this.
Last updated: 2026-03-22

Post by nirav1992 on CNC15_LargeGCode.project BC Axis Issue ^{CODESYS Forge talk (Post)}
I am using CNC15_LargeGCode.project for small G01 segments. sample working ok for XY axis but not getting smooth movement while using BC axis pair instead of XY axis
Last updated: 2026-05-05

Post by chaylak on MC_ReadActualPosition with ST code ^{CODESYS Forge talk (Post)}
hi everyone, i am trying use MC_ReadActualPosition module in ST but i cant do it,( if i use CFC yes i read it) my axis is SoftMotion General Axis Pool->VirtAxisZ [Device: SoftMotion General Axis Pool] codesys V3.5 SP20 program: PROGRAM PLC_PRG VAR VirtAxisZ : AXIS_REF_VIRTUAL_SM3; fbPowerZ : MC_Power; fbReadPos : MC_ReadActualPosition; bEnable : BOOL := TRUE; lrActPos : LREAL; bValid : BOOL; bError : BOOL; fbResetZ : MC_Reset; xZ_Valid : BOOL; xZ_Busy : BOOL; xGlobalPower : BOOL; xGlobalReset : BOOL; xBtnTeachingMode : BOOL; lrGrvZ_OffsetTorque : LREAL := 0.5; lrPulseMmZ : LREAL; rPosFromBlock : LREAL; xZ_IsPowered : BOOL; xZ_PowerError : BOOL; iZ_PowerErrorID : LREAL; rZ_ActualPos : LREAL; lrTargetTorque : LREAL; sZ_ErrorString : STRING; //********** jog fbJogZ : MC_Jog; xJogForward : BOOL; xJogBackward : BOOL; rZ_ActVelocity : REAL; END_VAR fbResetZ( Axis:= VirtAxisZ, Execute:= xGlobalReset); fbPowerZ( Axis:= VirtAxisZ, Enable:= xGlobalPower, bRegulatorOn:= xGlobalPower, bDriveStart:=xGlobalPower , Status=> xZ_IsPowered, Busy=> xZ_Busy, Error=> xZ_PowerError, ErrorID=> iZ_PowerErrorID ); IF xGlobalPower THEN fbJogZ( Axis:= VirtAxisZ, JogForward:= xJogForward, JogBackward:= xJogBackward, Velocity:= 100, Acceleration:= 100, Deceleration:= 100, Jerk:= 1000); END_IF fbReadPos( Axis := VirtAxisZ, Enable := TRUE, Valid => bValid, Position => lrActPos, Error => bError ); IF VirtAxisZ.bError THEN sZ_ErrorString := 'Z Ex err'; ELSIF NOT xZ_IsPowered THEN sZ_ErrorString := 'Z Ex (Power Off)'; ELSE sZ_ErrorString := 'Z Ex Ready'; END_IF IF xBtnTeachingMode THEN lrTargetTorque := lrGrvZ_OffsetTorque; ELSE lrTargetTorque := 0; END_IF VAR_INPUT CFC_Motion: INT; END_VAR
Last updated: 2026-05-15

Post by jroddball79 on PM556-TP-ETH — How to change IP address without overwriting the PLC program? ^{CODESYS Forge talk (Post)}
Hi, I need to change the IP address of an ABB PM556-TP-ETH using ABB Automation Builder. The situation is: I have connectivity to the PLC using the current IP (configured in Communication Settings) Online Login works fine The Network Scan does not detect the PLC IP-Configuration tool shows all fields disabled I don't have the original project source, only an empty project The PLC has no SD card inserted The Online menu does not show an Upload option When I modify the IP in the project and connect, Automation Builder shows: "The PLC configuration needs to be updated. A full PLC download is required" I'm afraid a full download will overwrite the running program. Is there any way to change only the IP address without overwriting the application? I'm also open to solutions using third-party tools, Python scripts, or any other method (DCP protocol, direct TCP communication, etc.) as long as it doesn't overwrite the running application. Thank you
Last updated: 2026-05-19

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