Post by micik on ERR_OK not recognized ^{CODESYS Forge talk (Post)}
Hello, if I try to use ERR_Ok in my code to check whether the file is open correctly or not, I get an error "Identifier ERR_OK not recognized", I can use plain 0 (zero) instead. But in general, is this a proper way to check for success of file operation since the 4th parameter is a poinmter to RTS_IEC_RESULT, and normally I would expect this to be used somehow. _hFile := SysFileOpen(_sFileName, am:=SysFile.ACCESS_MODE.AM_WRITE, ADR(_result)); IF _result <> 0 THEN udDiag := 100; RETURN;
Last updated: 2024-08-17

Post by richiemuia on Static Analysis, Loading Files via script. ^{CODESYS Forge talk (Post)}
I've seen that you can use cmds like below to run SA from scripts. system.commands["staticanalysis", "run"].execute() But I would like to run different SA configuration files to create separate logs and cant find anywhere in the scripting engine if this is supported. This stems from if I turn on everything, SA stops reporting issues in the message log when the list gets over 600ish issues. Once we have done an initial clean up of code this wont be an issue, but I'm trying to get a baseline to track improvement.
Last updated: 2024-08-21

Post by richiemuia on Static Analysis, Loading Files via script. ^{CODESYS Forge talk (Post)}
I've seen that you can use cmds like below to run SA from scripts. system.commands["staticanalysis", "run"].execute() But I would like to run different SA configuration files to create separate logs and cant find anywhere in the scripting engine if this is supported. This stems from if I turn on everything, SA stops reporting issues in the message log when the list gets over 600ish issues. Once we have done an initial clean up of code this wont be an issue, but I'm trying to get a baseline to track improvement.
Last updated: 2024-08-21

Post by durallymax on Access Variable Visu Dialog ^{CODESYS Forge talk (Post)}
Is there a way to access the variable in the called dialog? Example: Text Field element with PLC_PRG.myVar as Text variable. OnMouseClick configured to write variable with keypad pop-up. OnValueChanged configured to Execute ST RND(PLC_PRG.myVar,2); Rather than change myVar with each copy of this Text Field, is there a way to access whatever the configured text variable is? Generally try to stay away from ST in visu, but was curious regardless.
Last updated: 2024-11-14

Post by andre-luis on Device diagnosis ( EtherCAT IO card ) ^{CODESYS Forge talk (Post)}
Hi, In our project, it is not rare to have I/O cards issues. I wanted to have a way to check their statuses ( Eg. INIT, OP, PREOP, etc.. ) I was trying to use the GetDeviceDiagnosisInfo method from the IoConfig_Globals, but there is no info available on the Web with a simple example; does someone have a link to some tutorial or anything else ? Kind Regards, Andre.
Last updated: 2025-02-06

Post by trusty-squire on AXIS Rollover ^{CODESYS Forge talk (Post)}
In that case, the best thing to do might be to track the offset in a separate variable of your logic, then when you provide target positions, make your target position use the tracked offset as below: ActualTargetPosition := (TargetPosition + MyOffset) MOD 360; Although, upon further reflection, you'll still have the same cycle time issues. You might be able to break your code into multiple tasks to reduce the cycle time, or use an Event task to capture the offset position?
Last updated: 2025-03-12

Post by johnbomb on Ignore Dependencies When Loading Package? ^{CODESYS Forge talk (Post)}
I'm trying to load a .package into Codesys 3.5.21, but the package is intended to only work with Codesys 3.5.18.0 and is configured with dependencies on the specific versions of other packages included with 3.5.18.0, and 21 has newer versions so the package will not install. I would like to install the package anyway to try and get things working on a newer Codesys version, since for some reason the installer for .18 errors out and doesn't fully work in my environment, but .21 seems to work fine.
Last updated: 2025-04-01

Post by arwie on Use MC_Home without enabling the drive for homing method 35 ^{CODESYS Forge talk (Post)}
Is it possible to use MC_Home without enabling the drive (MC_Power)? On the drive the homing method 35 (Homing on current position) has to be executed. The drive has to stay disabled due to safety. This is explicitly allowed by the drive. Unfortunately MC_Home reports the error SMC_REGULATOR_OR_START_NOT_SET when executed. Are there other options to start homing, if not with MC_Home?
Last updated: 2025-06-25

Post by imdatatas on The default ramp type selection in SoftMotion V4.18.0.0 is Quadratic ^{CODESYS Forge talk (Post)}
Dear @gseidel, @tk096, I noticed that with SoftMotion V4.18.0.0, if a new axis is added to the project, the ramp type selection defaults to "Quadratic". In all previous versions, the velocity ramp type selection was "Trapezoidal". This causes some unexpected issues in projects with SoftMotion version V4.18.0.0 for newly created or newly added axes to existing projects. Is it possible to reconsider this situation in the next update and set the velocity ramp type to "Trapezoid" by default again? Best Regards, Imdat
Last updated: 2025-07-22

Post by camjam on BOOL variable in OPC UA and modbus simultaneously ^{CODESYS Forge talk (Post)}
I have come across this. The only way i could get it to work would be to define a word that is also the same address as the Bools. eg %MX600.0 through to %MX600.15 would be individually defined in the variables and them have another variable word defined at %MW300. You still need to break out the word in what ever program you are using to read/write the OPCUA tags.
Last updated: 2025-08-18

Post by jzhvymetal77 on Special Chars in Visualizationfor QR code string ^{CODESYS Forge talk (Post)}
In Visualization, is there any way to make special characters in a string display properly in a Text object? I wrote a function block to create QR codes at runtime. My code uses “$DB,” which in ASCII should render as a solid block. The code works, but to display it in Visualization I had to create multiple rectangles with visibility bound to a BOOL array. That works, but since each BOOL must be exposed as a separate variable, it consumes most of the available monitoring resources. See Attached image.
Last updated: 2025-09-29

Post by jzhvymetal77 on Special Chars in Visualizationfor QR code string ^{CODESYS Forge talk (Post)}
In Visualization, is there any way to make special characters in a string display properly in a Text object? I wrote a function block to create QR codes at runtime. My code uses “$DB,” which in ASCII should render as a solid block. The code works, but to display it in Visualization I had to create multiple rectangles with visibility bound to a BOOL array. That works, but since each BOOL must be exposed as a separate variable, it consumes most of the available monitoring resources. See Attached image.
Last updated: 2025-09-29

Post by eschwellinger on Licensing info not available. ^{CODESYS Forge talk (Post)}
yes and no ... if you run the license server on the host (to serve licenses to the docker instances / vplcs then there is no runtime which could check the licenses on the host. Therefore you need the CODESYS WBM to activate or check the licenes or you could use in CODESYS IDE the licensemanager ( not the one for the device licenses) but you have the the IP of the license server that he know where to search for the licenses ..tool options i guess to add it, will add a screenshot later.
Last updated: 2025-10-01

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 durstloescher on Codesys Input Detector ^{CODESYS Forge talk (Post)}
Good morning, I am currently working on implementing a display dimmer. I want the display to dim after X minutes. This works so far. The implementation is done via the Linux subsystem, to which a command is sent to dim the display. However, my problem is resetting the timer when input is received. I want the dimming timer to be reset with each click/touch. Unfortunately, I can't find a suitable solution for this. Are there any ways to do this? Codesys v3.5 SP19 Patch 2
Last updated: 2024-02-15

Post by andy-yemm on Assertion Failed ^{CODESYS Forge talk (Post)}
I had similar assertion failed error messages today. I am fairly new to Codesys. I tried using SFC for the first time, I usually use ST. Anyway I had errors in some of my transitions. I copied and pasted transition code and forgot to change the target of the code. I started getting lots of the assertion errors but now I have sorted out the problems and it compiles OK the assertion error messages seem to have stopped. There do not seem to be any other responses to your post, did you resolve your problem?
Last updated: 2024-03-19

Post by marcolim on RPC failed 0x16c9a085 ^{CODESYS Forge talk (Post)}
Hello Matteo, I think the problem is about configuration of firewall (windows firewall usually). You can disable temporary the firewall to check if the communication works. Eventually you can: Go to the control panel -> Windows Defender Firewall -> Allow an app or feature Enable the options to change the settings. Scroll down in the application list to CODESYS and CODESYS ControlService. If you don’t see this application add it to the list. Make sure that all the checkboxes are checked (Domain, Private and public).
Last updated: 2024-04-01

Post by dkugler on Codesys SVN ^{CODESYS Forge talk (Post)}
Don't set on SVN. The service phase has started in March 2024 and will be discontinued in 2027. We actually use SVN and have to switch to GIT in the future. As I informed, there is no way of getting a single SVN or GIT licence. I' dont understand, why Codesys forces us customers to pay for an expensive Professional Edition paket from year to year using only one part of it! If you find a way to buy a single licence, let me know.
Last updated: 2024-04-29

Post by mozed on Bug Device login ^{CODESYS Forge talk (Post)}
Good morning, The problem I encounter is very disturbing, when I try to connect to my project, it asks me to put in my username and password, which I do. However, I cannot connect and it restarts. the window to rewrite my identifiers. However it is the correct identifier and password I do not understand why. When I try to put false identifiers there strangely it tells me that these are not valid identifiers. There is something what can I do? Sincerely
Last updated: 2024-06-11

Post by durallymax on VAR_INFO from inside of a FB to get info on the instance. ^{CODESYS Forge talk (Post)}
The help link appears to be broken. When I implemented something similar I had to add {attribute 'reflection} above the declaration of the FB with {attribute 'instance-path'} above the string VAR that would contain the path. Then wrote a function to trim off however much I wanted removed by searching for periods, then formatting it with spaces at the periods and removing brackets on arrays while also breaking up the PascalCase to present it a bit nicer for the end-users.
Last updated: 2025-12-12

Post by tommyk-mar on Smooth path is not working with SMC_NCInterpreter ^{CODESYS Forge talk (Post)}
Hello, Im using SMC_NCInterpreter and SMC_NCReadFile2 to read gcode program for CNC machine and what I have observed is that G51 and G52 is not smoothing the path. Machine stops in every point, what could I do to make machine pass through the points without stopping or what could allow me to use smooth path corretly if I use NCInterpreter. Im using it because I want to add variables to my gcode and its not possible directly from the CNC editor thats why I do use external file. Any ideas?
Last updated: 2026-03-26

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 timvh on control loop library IIR filter ^{CODESYS Forge talk (Post)}
In the Control Loop Library package are multiple example projects, including one for the filters. Program containing: GVL.filterIIR( xEnable:= GVL.xEnableFilter, lrValue:= GVL.lrYOriginal, lrFilteredValue=> GVL.lrOutputIIR); GVL.filterFIR( xEnable:= GVL.xEnableFilter, lrValue:= GVL.lrYOriginal, lrFilteredValue=> GVL.lrOutputFIR); GVL.filterSOS( xEnable:= GVL.xEnableFilter, lrValue:= GVL.lrYOriginal, lrFilteredValue=> GVL.lrOutputSOS); GVL containing aCoefficientsA_IIR : ARRAY[0.. 4] OF LREAL := [1,-2.3695130071820376,2.31398841441588,-1.0546654058785676,0.18737949236818494]; aCoefficientsB_IIR : ARRAY[0.. 4] OF LREAL := [0.0048243433577162282,0.019297373430864913,0.028946060146297369,0.019297373430864913,0.0048243433577162282]; filterIIR : Ctrl.Filter_IIR := (palrCoefficientsA:= ADR(GVL.aCoefficientsA_IIR), udiSizeCoefficientsA:= SIZEOF(GVL.aCoefficientsA_IIR), palrCoefficientsB:= ADR(GVL.aCoefficientsB_IIR), udiSizeCoefficientsB:= SIZEOF(GVL.aCoefficientsB_IIR)); aCoefficientsB_FIR : ARRAY[0.. 5] OF LREAL := [0.01982722552692669,0.1325131219866022,0.34765965248647102,0.34765965248647107,0.13251312198660226,0.019827225526926694]; filterFIR : Ctrl.Filter_FIR := (palrCoefficientsB:= ADR(GVL.aCoefficientsB_FIR), udiSizeCoefficientsB:= SIZEOF(GVL.aCoefficientsB_FIR)); aCoefficientMatrix_SOS : ARRAY[0.. 1] OF Ctrl.FilterCoefficients_SOS := [(b0:= 1, b1:= 2, b2:= 1, a0:= 1, a1:= -1.048599576362609, a2:= 0.2961403575616683), (b0:= 1, b1:= 2, b2:= 1, a0:= 1, a1:= -1.320913430819428, a2:= 0.6327387928852787)]; lrG : LREAL := 0.004824343357716228; filterSOS : Ctrl.Filter_SOS := (paCoefficientMatrix:= ADR(GVL.aCoefficientMatrix_SOS), udiSizeCoefficientMatrix:= SIZEOF(GVL.aCoefficientMatrix_SOS), lrGain:= GVL.lrG); lrX : LREAL; lrYOriginal : LREAL; lrOutputFIR : LREAL; lrOutputIIR : LREAL; lrOutputSOS : LREAL; xEnableFilter : BOOL := TRUE;
Last updated: 2025-08-01

Post by garyl on Comments in arrays and assigning RST coil's to 600 outputs ^{CODESYS Forge talk (Post)}
Hello all, im working on a project that requires me to convert an old automation direct DirectSoft PLC d2-250-1. One of the problems im encountering is that all of the comments are attached to members of the different addresses. When i convert the addresses (1777 "C" registers, 777 X registers, and 20,0000 V registers) im running into difficulties keeping the inputs/outputs correct since they are missing documentation. Is there a good way to retain the comments of the indexes in the array? Secondly, initially i was declaring the "C" and "V" addresses individually and this worked to retain the comments as to which register did what, however i ran into a problem when one rung reset (or set to 0) approximately 600 C Addresses. Since each tag is separately declared this proved to be nearly impossible without a literal wall of code that attempted to crash the program. So i converted all of the registers (C,X,Y,V) into separate structs, declared them as arrays and pointed all of the original call outs in the program to the newly defined structs. However i have now lost comments and the program is very hard to follow. Thanks for any help with this issue.
Last updated: 2023-08-31

Post by grant32 on RAMP_REAL FB is retaining my output value when i try to re use the FB ^{CODESYS Forge talk (Post)}
Hello, I'm relatively new to PLC programming. I am trying to creat a ramp down function, I have an example here of what I am using. I can get the function to work, the issue is that the OUT (variable3) value is being held by the FB so after I use it once it no longer works. In this example i set variable3 to 100 and the rest is as seen, over the course of a minute it ramped down to 10 (as desired). But when I deenergize TEST_START, set variable3 back to 100, and then re-energize TEST_START it immediately jumps back to the previously held value 10. The reset on this block just pauses the function and holds the last OUT. In my case I will need the function to start OUT at a set value, ramp down to the IN (variable2) value, and then accept a new OUT value to ramp down next time the block is energized. Hopefully this made sense, if anyone has any advice that would be awesome!
Last updated: 2024-07-29

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