Post by julianramirez on ModbusFB write update ^{CODESYS Forge talk (Post)}
Hello everyone, I am testing the ModbusFB library tcp server and so far I am able to create holding registers successfully, however, I am trying to identify after each write which registers got updated (i.e. function code, write value). I can even see the var udiNumWriteRequests, which increases with every write. I noticed that there is logging with the LogStatusInfo method. After I call it I am able to read in the console stuff that I want. Nevertheless, this is only available at the logs and is not easy to decode because it consists on several messages, I would like to know if there is a way for me to retrieve this information from the function itself with pointers or if there is any way to copy the logs messages (assuming that I can filter them with the LoggingOptions to only show what I need) inside the runtime code and not in the console. Thanks for your help :)
Last updated: 2024-09-16

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 mubeta on Some 'pathetic' errors in SoftMotion program ^{CODESYS Forge talk (Post)}
Yes, this is the error the sometimes show up. What make me crazy is the fact that it happens randomly and not each times. I know very well where the problem is, in wich one program row it's located. For each actions of the state machine I have all events recorded with log on text file. it is not problematic for me to find the application point of the fault, but I need to understand why occasionally and for no apparent reason, switching the state machine and thus changing the motion FB, sends the axis into failure (but only occasionally). 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. 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).
Last updated: 2024-07-18

Post by hwillems on Ranges, Lambdas, on Fixed arrays of structs ^{CODESYS Forge talk (Post)}
I do datastructures and algorithms in Codesys. For example a Struct of Person with thing's like IdNumber, Name, Age etc. as example. Now i do all kind of calculations, filters. So i have this pretty big Fixed Array with Structs. On this struct i want to do simple stuff you can do easily in C++/Python/Rust etc. For example i want to do this: AvererageAge := Average(Peoples.Age); Then it will return the average of all members ages. Or Sort struct on age etc. Or sort on alphabetical Name. Or use Lambda functions to filter/mutate out things like, filter out everybody above 18 years old. Or remove people who it's name start with "A". Currently i have to write my own custom function for example sorting on Age. And make a super specific function based on that particulare datastructure. Here an Example: (*Before calling this FIlter method, set the mNodeFilterSwitch to the desired filter.*) CASE mNodeFilterSelect OF (********************************[ Status Filters ]***********************************) NodeID: FOR x := ACS_OUT_BEGIN TO ACS_OUT_END BY 1 DO FOR y := ACS_IN_BEGIN TO ACS_IN_END BY 1 DO IF marrNode[y].Status.oiNodeID > marrNode[y + 1].Status.oiNodeID THEN mNodeTemp := marrNode[y + 1]; marrNode[y + 1] := marrNode[y]; marrNode[y] := mNodeTemp; END_IF; END_FOR; END_FOR; Started: FOR x := DES_OUT_BEGIN TO DES_OUT_END BY -1 DO FOR y := DES_IN_BEGIN TO DES_IN_END BY -1 DO IF marrNode[y].Status.oxStarted > marrNode[y - 1].Status.oxStarted THEN mNodeTemp := marrNode[y - 1]; marrNode[y - 1] := marrNode[y]; marrNode[y] := mNodeTemp; END_IF; END_FOR; END_FOR; Starting: FOR x := DES_OUT_BEGIN TO DES_OUT_END BY -1 DO FOR y := DES_IN_BEGIN TO DES_IN_END BY -1 DO IF marrNode[y].Status.oxStarting > marrNode[y - 1].Status.oxStarting THEN mNodeTemp := marrNode[y - 1]; marrNode[y - 1] := marrNode[y]; marrNode[y] := mNodeTemp; END_IF; END_FOR; END_FOR; END_CASE; I have like 30+ of these in the enum. Not really DRY code right? These are custom made bubble sort filters in a function. You pass in the Datastructure, and say what function you want. (This is an enum collection of sorting functions) And then the Array with Nodes of Structs gets ordered. Why can't we have Iterators and Lambda's and build in standard functions like regular languages? Also i use bubble sort because it's the easiest to implement because i can't get this to code DRY. Problem with ST (Even the new one with classes) that it's very limited for programming datastructures and algorithms. Yes you still not want dynamic memory and you need to choose the correct algorithm so you know the most extreme edge cases regarding the time it takes to execute the algorithms.(Real-time execution) How are other people dealing with this? Here for example saw some software using an adjusted ST language and having FOR EACH possibility: https://www.fernhillsoftware.com/help/iec-61131/structured-text/st-for-each.html You can then build your own custom Iterator functions. I wish the IEC 61131-3 standard would be more expressive and having more standard modern features, but still keep close to the fact of no dynamics memory and real-time systems.
Last updated: 2023-08-31

Post by fabian on Sys Process Execute Command ^{CODESYS Forge talk (Post)}
Hello, I have a question: Once the command is being executed, is there a way to kill it again? As the called application is running in the background, the user can't close it but it shall be closed/terminated, commanded by codesys. I have tried with "SysProcessTerminate" but I guess this is not correct as the RTE crashes when this function is called. Starting the application: IF GVL.xStrtQR THEN GVL.xStrtQR := FALSE; SysProcess.SysProcessExecuteCommand2(pszCommand:=sCmd, pszStdOut:=stdout, udiStdOutLen:= SIZEOF(stdout),pResult := ADR(GVL.pResQRTsk)); END_IF Trying to stop it again: IF GVL.xTrmQR THEN GVL.xTrmQR := FALSE; pResTerm := SysProcess.SysProcessTerminate(hProcess:=SysProcess.SysProcessGetCurrentHandle(pResult:=ADR(GVL.pResQRTsk))); END_IF Codesyscontrol Win x64, 3.5.19.10. Many thanks for any advice pointing to the correct direction.. :-) Regards, Fabian
Last updated: 2023-11-17

Post by jegerjon on Testing of Codesys program ^{CODESYS Forge talk (Post)}
I have a simulation function that toggle xSimActive. I map all IO variables to "IO GVLs" when xSimActive=0. I map IO corresponding SimIO GVL to "IO GVLs" when xSimActive=1. Then I write code for the simulation program that runs when xSimActive=1. Typically increase flow corresponding to pump speed, simulate tankfilling corresponding to flow and so on. I made a FC that require a correct code to activate simulation to avoid unintended activation by service dept. When comissioned remove any possibility to activate simulation. Super when officetesting and supporting service dept. + cheap as it requires no additional equipment, and it is easier to support customer later on in the life cycle as you can test proposed changes without setting up a testlab.
Last updated: 2023-12-07

Post by jegerjon on Testing of Codesys program ^{CODESYS Forge talk (Post)}
I have a simulation function that toggle xSimActive. I map all IO variables to "IO GVLs" when xSimActive=0. I map IO corresponding SimIO GVL to "IO GVLs" when xSimActive=1. Then I write code for the simulation program that runs when xSimActive=1. Typically increase flow corresponding to pump speed, simulate tankfilling corresponding to flow and so on. I made a FC that require a correct code to activate simulation to avoid unintended activation by service dept. When comissioned remove any possibility to activate simulation. Super when officetesting and supporting service dept. + cheap as it requires no additional equipment, and it is easier to support customer later on in the life cycle as you can test proposed changes without setting up a testlab.
Last updated: 2023-12-07

Post by mohammadasif on Blink Function definition is wrong in codesys online help ^{CODESYS Forge talk (Post)}
https://content.helpme-codesys.com/en/libs/Util/Current/Signals/BLINK.html in the above link, please correct your website the following: "Output value, starts with FALSE and switches between TRUE and FALSE for the given high and low times" it should actually be: "Output value, starts with TRUE and switches between TRUE and FALSE for the given high and low times" if not please let me know if this has changed in a util library update, in your older website it has the right definition here: https://help.codesys.com/webapp/blink;product=codesys;version=3.5.11.0
Last updated: 2023-12-28

Post by fajean on Issues with "Add all instance path" ^{CODESYS Forge talk (Post)}
In the past, we have routinely used the "add all instance paths" function to automatically add variables to VAR_CONFIG lists. My recollection is that compiling a project did not require VAR_CONFIG to be fully populated, and, once successfully compiled, instance paths could be added. Errors related to missing declarations, if I recall correctly, were thrown when downloading to the PLC, they did not prevent a successful compile. At some point, it stopped working. Missing declarations in a VAR_CONFIG now cause a compile error, so the application is never "current", the only reason I can see being the missing VAR_CONFIG declarations themselves (no other error). We observe the same behavior across all our projects. This is really aggravating, and I must be missing something simple. We use 3.5 SP17p3, 64 bits. Can anyone help?
Last updated: 2023-12-29

Post by alexgooi on Codesys licensing explanation ^{CODESYS Forge talk (Post)}
Dear Forum, We are currently switching to a native Codesys controller, and I'm currently trying to determine the correct license. I have a question regarding the Modbus instances. With the Standard S license this is set to 4 (See picture). In our projects we are using a lot of communications to Modbus servers using a Codesys Controller, for this communication I'm using the ModbusFB library (supplied by 3S) (see picture). In my project I would like to use more than 4 instances of the ClientTCP FB. My question is, is this now capped at 4 possible connections with the standard S license. Or do these function blocks have a different relation with the license? Some clarity on this topic would be very welcome. Thank you in advance
Last updated: 2024-02-15

Post by esave on Stepper Drive with Ethercat ^{CODESYS Forge talk (Post)}
Hello everybody I am new into Codesys. I have a stepper driver (EM3E-556E) from Leadshine. I want to controll the stepper driver via EtherCat to a ST programm but I dont have any function block or anything that i can use. I only have the XML-File wich I loaded. With it I implemented the drive as a Ethercat slave and now I see these variables. (See picture) I dont know how to controll the stepper drive. And the manufacturer doesnt provide support for me. Can anybody help me or atleast tell me how they would do it?
Last updated: 2024-03-14

Post by fenicklar on Login problem with FileTransfer on Raspberry Pi 5 ^{CODESYS Forge talk (Post)}
Hello everyone, I'm currently trying to set up a FileTransfer function from a Webvisu to my Raspberry Pi 5 on Codesys 3.5 SP 19 Patch 6. I went in the files CODESYSControl.cfg and CODESYSControl_User.cfg and added : [CmpWebServerHandlerV3] AllowFileTransferServices=1 And it seems to be working. However, I cannot access my several Webvisu without putting my login. That's a problem because one of my webvisu is in kiosk mode on the raspberry itself and there is nokeyboard attached, it's just an information screen, but I can't view it. Is there a wey to enable the File Transfer without requiring to login ? Thank you for your time
Last updated: 2024-03-18

Post by mani-i4point0 on Issue with WebVisu on Raspberry PI ^{CODESYS Forge talk (Post)}
Hi, I am running Codesys Runtime by purchasing 'Codesys control for raspberry pi MC SL', I am trying to use the Variables from my GVL's. Few of the variables used as a Pushbutton form the Visualization. These 'BOOL' Variable getting unlatched automatically even though there is no write function in the Overall project. All of them are 'Read' functions, at the same time few other BOOL variable behaviors are seems to be fine. I have tried, clean all and download, serval time restarted the hardware. Happy to share any any information. Your input to resolve this issue would be highly appriciated. Version Details: codesyscontrol 4.8.0.0, armhf codesyscontrol based on SDK 3.5.19.0
Last updated: 2024-03-20

Post by albzen on EtherCat Slaves diagnosis ^{CODESYS Forge talk (Post)}
Hello everybody, I'm working on a RunTime Plc (Codesys 3.5.16/18.20) connected to an EtherCat bus with many devices. The bus has some communication fault but I don't know how understand which is the device or the cable that has the trouble. To understand the cause of the problem I would like to read the WKC (Working counter) of the devices (0x0300...0x030C), how is explained in EtherCat documents, but it seems that the read of the counter is disabled. Attached there is an extract of the Ethercat document. Can anyone give me some advice about how and with function can I read it. Thank you in advance!
Last updated: 2024-03-29

Post by albzen on EtherCat Slaves diagnosis ^{CODESYS Forge talk (Post)}
Hello everybody, I'm working on a RunTime Plc (Codesys 3.5.16/18.20) connected to an EtherCat bus with many devices. The bus has some communication fault but I don't know how understand which is the device or the cable that has the trouble. To understand the cause of the problem I would like to read the WKC (Working counter) of the devices (0x0300...0x030C), how is explained in EtherCat documents, but it seems that the read of the counter is disabled. Attached there is an extract of the Ethercat document. Can anyone give me some advice about how and with function can I read it. Thank you in advance!
Last updated: 2024-03-29

Post by alexgooi on Modbus writing on value change ^{CODESYS Forge talk (Post)}
The way I usally tackle this is by syncing only words (then you are able to use the FB above). If you then want to write a Boolean simply type it like this. Value[1].0 := Bool1; Value[1].1 := Bool2; Value[1].2 := Bool3; Uints have the same number of bits than a INT/WORD so these ones will work as well (they are only represented diffrently). A Real will work but you will loose some infomration in the conversion. If you want to keep the information you can convert 2 words to a float with a function (for example with the IEEE-754 standard) . In this way the syncing to the server is very simple and in the Codesys Program you decide what part of the word you want to use.
Last updated: 2024-04-03

Post by pethun on Upgrade from codesys 3.5.19 to 3.5.20 ^{CODESYS Forge talk (Post)}
Hi We upgraded our ptoject from 3.5.19 to 3.5.20 but we get an error message in the latest version. We made our own trend function and its related to this we get error message: Trend_Menu Device: PLC Logic: Application: C0032: Cannot convert type 'RTS_SYSTIMEDATE(systimertc, 3.5.20.0 (system))' to type 'RTS_SYSTIMEDATE(systimertc, 3.5.17.0 (system))' The variables are defined as follow: start : SysTimeRtc.SYSTIMEDATE; end : SysTimeRtc.SYSTIMEDATE; The code that creates the error is the variable start and end IF xAssign THEN xAssign := FALSE; xPanEnable := FALSE; xZoomEnable := FALSE; drs.liFrom := VisuTrendStorageAccess.TrendStorageConvertToTimestamp(start, 0 (us)); drs.liTo := VisuTrendStorageAccess.TrendStorageConvertToTimestamp(end, 0 (us)); drs.m_itfDateRangeSelectorClient.SetCurrentRange(drs.liFrom, drs.liTo); END_IF I cant understand really what the error message means and what can be the cause of the error? It compiles fine in dthe older codesys 3.5.19. If anyone has some experience of this please help us out? We must upgrade due to the new licenses. Thanks
Last updated: 2024-04-20

Post by pethun on Upgrade from codesys 3.5.19 to 3.5.20 ^{CODESYS Forge talk (Post)}
Hi We upgraded our ptoject from 3.5.19 to 3.5.20 but we get an error message in the latest version. We made our own trend function and its related to this we get error message: Trend_Menu Device: PLC Logic: Application: C0032: Cannot convert type 'RTS_SYSTIMEDATE(systimertc, 3.5.20.0 (system))' to type 'RTS_SYSTIMEDATE(systimertc, 3.5.17.0 (system))' The variables are defined as follow: start : SysTimeRtc.SYSTIMEDATE; end : SysTimeRtc.SYSTIMEDATE; The code that creates the error is the variable start and end IF xAssign THEN xAssign := FALSE; xPanEnable := FALSE; xZoomEnable := FALSE; drs.liFrom := VisuTrendStorageAccess.TrendStorageConvertToTimestamp(start, 0 (us)); drs.liTo := VisuTrendStorageAccess.TrendStorageConvertToTimestamp(end, 0 (us)); drs.m_itfDateRangeSelectorClient.SetCurrentRange(drs.liFrom, drs.liTo); END_IF I cant understand really what the error message means and what can be the cause of the error? It compiles fine in dthe older codesys 3.5.19. If anyone has some experience of this please help us out? We must upgrade due to the new licenses. Thanks
Last updated: 2024-04-20

Post by m83coding on Raspberry Pi Codesys SPI Master ^{CODESYS Forge talk (Post)}
Hello, I am trying to control shift registers 74HC596 and 74HC165 via Raspberry PI with SPI interface. So far I did it with a Microcontroller and now I wanna upgrade my Projekt with Raspberry Pi and Codesys Software to be more flexible. I tried to adapt PiFace Function Block to just send or recive a 8 bit via SPI interface of the my Raspberry Pi. With following code (see attached screenshots) * PLC_PRG * PiFaceDigital * PiFaceDigital.write8 * PiFaceDigital.read8 I have a signal at SCK and MOSI pin of the PI, so far so good. But I really struggle with the unterstanding of the code. Is there some detailed description of each line of code? Or is there somebody in the community who can explain each line of code? Or is there a more simple way to send / recive 8 bit via SPI? Manuel
Last updated: 2024-04-23

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 gseidel on CNC / G01 Speed is very slow (or go-stop motion) in Continuous short segment . ^{CODESYS Forge talk (Post)}
Hi k2saki, I would recommend to have a look at SMC_SmoothMerge, followed by SMC_SmoothPath. SmoothMerge will combine the small G1 elements to longer splines, SmoothPath will avoid stops between the splines. https://content.helpme-codesys.com/en/libs/SM3_CNC/Current/SM_CNC_POUs/SoftMotion-CNC/SoftMotion-Function-Blocks/SMC_SmoothMerge.html For SmoothMerge to work, you have to configure a tolerance, i.e. by how much it may deviate from the lines. To graph the output of the interpolator, you can use the trace. (Add a trace object below the application, and add the variables you are interested in to the trace.) Best regards, Georg
Last updated: 2024-04-30

Post by k2saki on CNC / G-Code streaming processing ( to start quickly in long G-Code File ) ^{CODESYS Forge talk (Post)}
Is it possible like G-Code streaming processing (like FANUC or SIEMENS DNC Function )? Or Does anyone know the tips for CODESYS Motion to start moving long Long G-Code File quickly? I have to wait long time after "Start" button to start moving, I have to wait finishing interpreting whole G-Code file, ( and I have to prepare huge buffer to store. ) Now, I'm working on my CNC Project using SMC_ReadNCFile2, and SMC_NcInterpreter to preprocess G-Code. I tried to set SMC_Interpolator.xExecute to true to Start while after SMC_NcInterpreter processed more 50-line of G-Code, but that not worked, I had to wait SMC_NcInterpreter processed all lines to start SMC_Interpolator. G-Code have about 2000 lines of XY of G01 (or more over.. ) of short segment that a CAM software has exploded from NURBS Curve.
Last updated: 2024-05-03

Post by xiaolo on Raspberry Pi 5 ^{CODESYS Forge talk (Post)}
Does Ver. 4.12 support Raspberry Pi 5? I have three issues. The first issue is that Codesys cannot detect the RPI 5 when I want to download the runtime. When assigning the IP Address manually then I can download the runtime. The second issue is that I cannot connect to the RPI to download a program. Sometimes the window pops up and it ask for the user credentials, but it is still not connecting. The third issue is that I cannot connect to an ESP32 configured as a Modbus Slave with a Raspberry Pi 4B. I can connect to the ESP32 via a Radzio! Modbus Master Simulator. I am also missing the function Write Holding Registers in the setup of the slave. Are this known issues and when it will be solved?
Last updated: 2024-07-12

Post by amy123 on Alarm Manager Example Alarm Client doesn't Populate ^{CODESYS Forge talk (Post)}
Hello, I tried to run the example project from https://forge.codesys.com/prj/codesys-example/alarm-manager/home/Home/ However, I can not get the interface for Alarm History 12 Alarm Manager client to populate with any alarms. 'udiResult := AlarmManager.g_AlarmHandler.RegisterClient(itfAlarmManagerClient12, ADR(arritfAlarmsFromHistory12), iMaxCountAlarmsFromHistory12);' when I look at itfAlarmManagerClient12 its always empty. What is confusing is that when I simulate 2 alarms, iCountActiveAlarms 12 has a vlaue of 2, associated with itfAlarmManagerClient12 - so that appears to work. And yet, its useless as the ProcessAlarms Function can't extract anything from the empty array. I dont understand how these arrays are supposed to be populated and why its not working. Any help would be greatly appreciated!
Last updated: 2024-07-15

Post by askic on Generate FBs from source ^{CODESYS Forge talk (Post)}
Hello, I'm coming from Siemens (TIA) world and currently learning Codesys. I'd like to know if there is an option to add external txt file with ST code for creation of a function block and then use this file as a source file from which FB will be generated? For example, in TIA, there is an option add external source file to the project structure and then use option "Generate blocks from source". This would create a FB. Does Codesys have something similar? This external source file would look like this: FUNCTION_BLOCK Scaling VAR_INPUT x, k, n : REAL; END_VAR VAR_OUTPUT y : REAL; END_VAR VAR END_VAR y := k*x+n; END_FUNCTION_BLOCK
Last updated: 2024-07-31

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