Post by thisischris on "You are using inconsistent overlay settings, please check your compiler defines for the current application" error ^{CODESYS Forge talk (Post)}
Hello. I am a new user. On generating the first test project I am receiving this error message. You are using inconsistent overlay settings, please check your compilerdefines for the current application (-> GENERATE_OVERLAY_VISU) and the setting within the visualization manager. Can anyone help?
Last updated: 2024-05-28

Post by gseidel on Can't get SMC_SmoothPath to work ^{CODESYS Forge talk (Post)}
Hi bertus, thanks for the additional information. Setting bAbort on a restart is not needed. Calling all FBs starting from the decoder up to checkvelocities with bExecute = FALSE and then giving a new rising edge on bExecute is what should be done. Do you also restart the Interpolator? (I don't think that has anything to do with the issue, but still...) Best regards, Georg
Last updated: 2025-12-23

Post by pernockham on Unable to deploy "Control for Linux SL 4.18.0.0" ^{CODESYS Forge talk (Post)}
Ok, I think I understand. The problem is my language-setting being "swedish". I will check if I can switch to english. Update/confirmed. Change LANG to en_GB, this enabled the architechture to be correct and the control SL again to appear and to be possible to be updated. Thanks!
Last updated: 2026-02-23

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Last updated: 2024-10-26

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

Post by phoward131 on Alarm State Icon ^{CODESYS Forge talk (Post)}
I am trying to create an icon on an overview screen that depicts if an alarm group has active alarms, active acknowledged alarms, or inactive unacknowledged alarms (waiting for confirmation). I've attempted to set up Notification Actions in the Alarm Class to set variables based on state changes but have been unable to find a clean and effective way to do this. Because an action on any alarm will trigger the variable to be set as instructed, I'm struggling to find a way to configure it for what I need (ie if two alarms activate, then one deactivates, the variable for indicating an alarm is active would be cleared after the single deactivation). I've been pointed toward the Alarm Manager example project but I'm finding it too complicated to understand how to implement it in my own project. Has anyone come up with another good way to indicate the states of alarms or a simpler usage of the Alarm Manager functions?
Last updated: 2024-04-23

Post by gatto on Backtick identifiers ^{CODESYS Forge talk (Post)}
Hello, I’m in Codesys 3.5.20.40 and I try to declare the variable ´var1´ but I get an error. here : https://content.helpme-codesys.com/en/CODESYS%20Development%20System/_cds_rules.html i read : Backtick identifiers By using backticks, characters can also be used in identifiers that are not normally permitted in identifiers, such as special characters. The acute accent character is used for backticks: ´ (Unicode: U+02CA) The use of backticks is recommended in order to be able to use the same identifiers in CODESYS as in other programming languages or documents, such as circuit diagrams. Any character may be used between two backticks, except line breaks and other backticks. Keywords are also allowed as identifiers between backticks. Examples: ´Variable+9´ ´INT´ The backticks are part of each identifier and therefore var1 and ´var1´ are two different identifiers. Example PROGRAM PLC_PRG VAR var1 : INT; ´var1´: INT; END_VAR var1 := var1 + 1; ´var1´ := 12; Are there any limitations or is something missing in my development environment?
Last updated: 2025-10-28

Post by hhermsen on Codesys v3.5.22.10 - Internal error:System.AggregateException...Value cannot be null...Parameter name: expLValue ^{CODESYS Forge talk (Post)}
Internal compiler error in SP22.x (expLValue null) — SP21 unaffected — need help isolating root cause I'm hitting the same internal compiler crash reported here. Same exact stack trace (AssignmentStatementReplacer → CreateAssignmentExpression → ArgumentNullException: Value cannot be null. Parameter name: expLValue), but in my case triggered by a self-written library, not a Visualization object — so this looks like a general SP22.x codegen regression rather than something tied to one specific language feature. What I've confirmed: Reverting to SP21 — no issue, builds clean SP22.x — internal compiler crash during Build > Application, code generation phase, with zero useful location info (no POU, no line number) check_for_errors/precompile-only passes cleanly; the crash only happens on a real full build, meaning static analysis never sees it coming What I've tried to isolate the cause (without success): Removed a suspected pattern involving a VAR_IN_OUT parameter used directly as a FOR-loop control variable, combined with early RETURN inside the loop — crash persisted identically afterward Confirmed no Visualization Manager or similar object in the project (ruling out the trigger in the linked report) Used an AI coding assistant (Claude Code) to search for other suspicious patterns — no luck pinpointing the exact statement Question @codesys-com Since the compiler gives no location info at all, is there any way to get more diagnostic output from the SP22.x codegen phase (verbose/debug build flags, log level settings, etc.)? Without that, isolating this in a large library means blind bisection — cutting the codebase in half repeatedly until the crash disappears, which is slow and error-prone without official tooling support. Happy to share the affected project or a minimal repro if that helps CODESYS engineering track it down.
Last updated: 2026-07-11

Post by szotyi on Array of Program ^{CODESYS Forge talk (Post)}
Hi! What is the proper and the easiest way to call programs through looping of array of programs, or pointer of program? instead of calling the programs one by one: prog1(inputX: 11); prog2(inputY: 12); prog3(inputZ: 13); similar like: VAR programsToCall : ARRAY [1..3] OF PROGRAM; END_VAR programsToCall[1] := prog1(inputX: 11); programsToCall[2] := prog2(inputY: 12); programsToCall[3] := prog3(inputZ: 13); FOR i := 1 TO 3 DO programsToCall[i] (); END_FOR Thanks.
Last updated: 2024-08-28

Post by apurv on Cannot pass array of constant size to a function as a reference ^{CODESYS Forge talk (Post)}
I have a Array of constant size defined like this Var Constant MAX_SIZE :UINT := 10; End_var VAR array : ARRAY[0..MAX_SIZE] OF INT; END_VAR Now I want to pass this array to a function by reference, Function fun : INT VAR_IN_OUT CONSTANT MAX_SIZE : UINT; END_VAR VAR_INPUT array : REFERENCE TO ARRAY[0..MAX_SIZE] OF INT; END_VAR but when I run this it gives strange Errors Error : Cannot Convert type 'ARRAY [0..MAX_SIZE] OF INT' to type 'ARRAY[0..MAX_SIZE] OF INT'
Last updated: 2024-01-07

Post by i-campbell on Official MQTT-Client: MAX_RECEIVE_BUFFER_SIZE_EXCEEDED ^{CODESYS Forge talk (Post)}
256MB for the protocol yes, but the default value for this library parameter limits the library to 6kB per task scan.
Last updated: 2023-09-27

Post by winki on Modbus TCP & RTU with Control for Linux SL ^{CODESYS Forge talk (Post)}
I do not have error anymore using nic with eth0 value. But my network it still 172.17.0.3 like the first picture.
Last updated: 2024-10-23

Post by timvh on Read codesys version in the codesys application ^{CODESYS Forge talk (Post)}
VAR RuntimeVersion: VERSION; END_VAR RuntimeVersion := __SYSTEM.Constants.RuntimeVersion; PS, when I call the SysTargetGetVersion on a Control Win, I get the value 50664488 = 16#03051428 equals version 3.5.20.40
Last updated: 2025-01-17

Post by tk096 on How to get the motor scaling value from code ^{CODESYS Forge talk (Post)}
Hi, unfortunately, in Softmotion you have only access to the combined fraction - the scaling factor from user units to motor increments. It can be accessed using MC_ReadParameter with parameter number 1054. increments = user_unit_position * fScaleFactor
Last updated: 2025-06-13

Post by gseidel on High-resolution drive with SoftMotion ^{CODESYS Forge talk (Post)}
Hi kporter, what value do you use for the modulo period? Can you please provide the complete axis configuration, including all scaling values? Thanks, Georg
Last updated: 2025-09-08

Post by open on How to create a stopwatch? ^{CODESYS Forge talk (Post)}
Thanks everyone for your input, I am using persistent variables to retain the timer value after machine shutdown, and main task to be as low as possible for the seconds TON to be accurate.
Last updated: 2023-12-14

Post by timvh on CAA SerialCOM - hCom Reset max value 1023 ^{CODESYS Forge talk (Post)}
You should only open de COM port once and then leave it open. This hCom should not keep on incrementing. (off course when you are done communicating, you need to close the COM port)
Last updated: 2024-03-22

Post by dagsupport on CAA SerialCOM - hCom Reset max value 1023 ^{CODESYS Forge talk (Post)}
Hi TimH Thanks for the information, I thought that was the case so have stepped through the code and found an error that wasn't closing the port, therefore hCom was increasing. Thanks
Last updated: 2024-03-28

Post by dagsupport on CAA SerialCOM - hCom Reset max value 1023 ^{CODESYS Forge talk (Post)}
Hi TimH Thanks for the information, I thought that was the case so have stepped through the code and found an error that wasn't closing the port, therefore hCom was increasing. Thanks
Last updated: 2024-03-28

Post by dagsupport on CAA SerialCOM - hCom Reset max value 1023 ^{CODESYS Forge talk (Post)}
Hi TimH Thanks for the information, I thought that was the case so have stepped through the code and found an error that wasn't closing the port, therefore hCom was increasing. Thanks
Last updated: 2024-03-28

Post by dagsupport on CAA SerialCOM - hCom Reset max value 1023 ^{CODESYS Forge talk (Post)}
Hi TimH Thanks for the information, I thought that was the case so have stepped through the code and found an error that wasn't closing the port, therefore hCom was increasing. Thanks
Last updated: 2024-03-28

Post by dagsupport on CAA SerialCOM - hCom Reset max value 1023 ^{CODESYS Forge talk (Post)}
Hi TimH Thanks for the information, I thought that was the case so have stepped through the code and found an error that wasn't closing the port, therefore hCom was increasing. Thanks
Last updated: 2024-03-28

Post by dagsupport on CAA SerialCOM - hCom Reset max value 1023 ^{CODESYS Forge talk (Post)}
Hi TimH Thanks for the information, I thought that was the case so have stepped through the code and found an error that wasn't closing the port, therefore hCom was increasing. Thanks
Last updated: 2024-03-28

Post by dagsupport on CAA SerialCOM - hCom Reset max value 1023 ^{CODESYS Forge talk (Post)}
Hi TimH Thanks for the information, I thought that was the case so have stepped through the code and found an error that wasn't closing the port, therefore hCom was increasing. Thanks
Last updated: 2024-03-28

Post by dagsupport on CAA SerialCOM - hCom Reset max value 1023 ^{CODESYS Forge talk (Post)}
Hi TimH Thanks for the information, I thought that was the case so have stepped through the code and found an error that wasn't closing the port, therefore hCom was increasing. Thanks
Last updated: 2024-03-28

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