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 timvh on Clarifications regarding the appropriate runtime system to use ^{CODESYS Forge talk (Post)}
If you are not using any specific Raspberry Pi functionality, then probably the "universal" Control Linux ARM SL is the approriate runtime to run on the Pi. For the license it doesn't matter which runtime version you choose, because this is not hardware based anymore, but application based. Best is to use the latest version of CODESYS. To determine which license you need, double click on your device, go to the tab License metrics.... Generate the code for your application and see which license you need based on the metrics of your application.
Last updated: 2024-09-24

Post by mark on IO link on IFM AL133x only single digital input on a channel ^{CODESYS Forge talk (Post)}
I have a problem with the CODESYS IO-Link SL software. When I insert a IO link master AL1332 and plug a discrete digital input to a channel it reads only 1 of the 2 available inputs on that channel. Is there anyone who sorted out if the second input is also usable? When we configure the module without the CODESYS IO-Link SL software then the second input on the channel can be used. At the moment we use some channels on a module as IO-link port, and some as discrete IO. It would be very nice if we can use both inputs on a channel with the use of CODESYS IO-Link SL.
Last updated: 2023-12-18

Post by reinier-geers on License problem gateway ^{CODESYS Forge talk (Post)}
16.4 Epis What has it to do with the manufacture? It just a licence more not. So basicly the idee of codesys sucks. 3s acts like its posible to add a license. And then it depence on the manufacturer. Why ?? Its a computer !! has nothing to do with the manufacturer. Most dont what a basic licence because they have to pay for that. 3s is the problem not the manufacture of the hardware. Its like the licence of the raspberry pi. HMI is not working. Sorry you get a refund. Why suggest that its possible wen its not !!. It cost me a lot of time. Who pays my time. Why do i have to pay for somting thats not working.
Last updated: 2024-04-26

Post by msirotkin on EtherCAT status errors ^{CODESYS Forge talk (Post)}
Hello, I'm trying to understand the reason for the many errors on the EtherCAT master status page. If we set the cycletime to 1ms we see a lot of rxerrors and lostframes, but the send and recive times are quite good (see attachement). And the status of the EtherCAT bus is good (no other errors, all is green, slave has no errors) But when we set 2ms cycletime the lostframe errors are gone, but periodically increses rxerror counter (see attachement). The questions is, what do these errors actually mean and what we can do to get gid of them? Linux RT, imx8, Codesys runtime for ARM 3.5.21.10, Ethercat 4.10 Thanks
Last updated: 2025-11-25

Post by lsislsis on SIGABRT Error ^{CODESYS Forge talk (Post)}
Please help us. Why we take this errors. We try different versions like 4.12.0 and 4.13.0 with same results. ;*********;<loggername>codesyscontrol.log</loggername>;<logoptions>; <enable>1</enable>; <type>normal</type>; <timestamp>rtc high resolution</timestamp>; <deactivatable>0</deactivatable>; <dump>always</dump>; <filter>0x0000000f<filter>; <maxentries>100000</maxentries>; <maxfiles>1</maxfiles>; <maxfilesize>1000000</maxfilesize>;</filter></filter></logoptions>;<entries>;Timestamp, CmpId, ClassId, ErrorId, InfoId, InfoText;ClassId: LOG_INFO =1;ClassId: LOG_WARNING =2;ClassId: LOG_ERROR =4;ClassId: LOG_EXCEPTION =8;ClassId: LOG_DEBUG =16;ClassId: LOG_PRINTF =32;ClassId: LOG_COM =64;</entries>;*********2024-11-05T08:23:59.728Z, 0x0000100c, 1, 0, 0, VisuFctCheckForUnusedClients: Removing Client with IEC-ID: 1 Time delta: T#33s1ms Locks: Paintbuffer: TRUE 2024-11-05T08:23:59.728Z, 0x0000100c, 1, 0, 0, VisuFctCheckForUnusedClients: Successfully Removed Client at Address: 547195449944, IEC-ID was: 1, EXT-ID: 431000373 2024-11-05T08:28:57.913Z, 0x0000100c, 1, 0, 0, Visu_PRG: Creating Client for Extern-ID: 347055752 2024-11-05T08:28:57.926Z, 0x0000100c, 1, 0, 0, Visu_PRG: Creating Client successful for Extern-ID: 347055752 Returned IEC-ID: 1 2024-11-05T08:30:51.103Z, 0x0000100c, 1, 0, 0, Visu_PRG: Successfully Removed Client with IEC-ID: 1, Extern-ID: 347055752 2024-11-05T08:37:36.517Z, 0x00000103, 65544, 1, 0, runtime received SIGABRT - system may be in an inconsistent state* We recommend a reboot of the controller now! 2024-11-05T08:37:36.517Z, 0x00000111, 8, 260, 3, #### Exception: HANDLED EXCPT <excpt>NonContinuable</excpt> in CH_COMM_CYCLE 2024-11-05T08:47:42.117Z, 0x00000103, 65544, 1, 0, runtime received SIGABRT - system may be in an inconsistent state We recommend a reboot of the controller now! 2024-11-05T08:47:42.117Z, 0x00000111, 8, 260, 3, #### Exception: HANDLED EXCPT <excpt>NonContinuable</excpt> in CH_COMM_CYCLE 2024-11-05T09:14:41.316Z, 0x00000071, 1, 0, 13, Webserver stopped 2024-11-05T09:14:44.485Z, 0x0000013d, 1, 0, 4, Number of licensed cores for IEC-tasks: 1 from 4 2024-11-05T09:14:44.487Z, 0x0000013d, 1, 0, 4, Number of licensed cores for IEC-tasks: 4 from 4 2024-11-05T09:14:44.540Z, 0x00000002, 1, 0, 2, Application [<app>Application</app>] loaded via [Download] 2024-11-05T09:14:55.894Z, 0x00001012, 1, 0, 0, Opened alarm storage file, version: 6 2024-11-05T09:14:55.951Z, 0x0000100c, 1, 0, 0, Visuinitialization starting. 2024-11-05T09:14:55.983Z, 0x0000100c, 1, 0, 0, Visuinitialization done. 2024-11-05T09:14:55.995Z, 0x00000071, 1, 0, 12, Webserver started 2024-11-05T09:15:01.753Z, 0x0000100c, 1, 0, 0, Visu_PRG: Creating Client for Extern-ID: 2279884529 2024-11-05T09:15:01.753Z, 0x0000100c, 1, 0, 0, Visu_PRG: Creating Client successful for Extern-ID: 2279884529 Returned IEC-ID: 0 2024-11-05T09:34:44.667Z, 0x00000103, 65544, 1, 0, runtime received SIGABRT - system may be in an inconsistent state We recommend a reboot of the controller now! 2024-11-05T09:34:44.667Z, 0x00000111, 8, 260, 3, #### Exception: More than 2 exceptions in CH_COMM_CYCLE: Stop logging 2024-11-05T10:13:26.867Z, 0x00000103, 65544, 1, 0, runtime received SIGABRT - system may be in an inconsistent state We recommend a reboot of the controller now! 2024-11-05T10:15:21.966Z, 0x00000103, 65544, 1, 0, runtime received SIGABRT - system may be in an inconsistent state We recommend a reboot of the controller now! 2024-11-05T10:19:12.167Z, 0x00000103, 65544, 1, 0, runtime received SIGABRT - system may be in an inconsistent state We recommend a reboot of the controller now! 2024-11-05T10:26:02.566Z, 0x00000103, 65544, 1, 0, runtime received SIGABRT - system may be in an inconsistent state We recommend a reboot of the controller now! 2024-11-05T10:31:42.866Z, 0x00000103, 65544, 1, 0, runtime received SIGABRT - system may be in an inconsistent state We recommend a reboot of the controller now! 2024-11-05T11:01:54.468Z, 0x00000103, 65544, 1, 0, runtime received SIGABRT - system may be in an inconsistent state We recommend a reboot of the controller now! 2024-11-05T11:09:29.868Z, 0x00000103, 65544, 1, 0, runtime received SIGABRT - system may be in an inconsistent state We recommend a reboot of the controller now! 2024-11-05T11:14:44.540Z, 0x0000100d, 1, 0, 0, Demo mode expired. 2024-11-05T11:27:20.868Z, 0x00000103, 65544, 1, 0, runtime received SIGABRT - system may be in an inconsistent state We recommend a reboot of the controller now! * Regards
Last updated: 2024-11-05

Post by husarz17 on How change Unity-ID in TCP Modbus Slave ^{CODESYS Forge talk (Post)}
My codesys is 3.5.21.30. I am using function ModbusServer from library ModbusTCP_Slave. The reason is that I need share 9000 Holding registers. By standard configuration it is only 4096. fbMbTcpDevice: ModbusTCP_Slave.ModbusServer; fbMbTcpDevice( wPort := 502, pInputData := ADR(awInputReg), pOutputData := ADR(awHoldingReg), uiInputDataSize := 10, uiOutputDataSize := 9000, xEnable := TRUE, tTimeout := 10000, InterfaceName := "eth0", xBusy => xBusy, xError => xError, byClientConnections => byConnections ); Ethernet port is cofigured: Network interface: eth0 IP address: 10.10.22.55 Subnet maskL 255.255.255.0 Default gateway: 0.0.0.0 And it only works when I am reading registers with ID 255 by Modbus Poll. Any other IDs don't work. The actual TCP client device try to read registers with ID 1 and I can't change it... Thanks in advance for your help!
Last updated: 2026-04-01

Post by ahuckphin on Issues with Modbus Slave with Raspberry Pi ^{CODESYS Forge talk (Post)}
I have a DFRobot RS485 temperature & humidity sensor (SEN0438) connected to my Raspberry Pi via a USB to RS485 adapter. I am able to connect and read the sensor data when running a python code locally. However in Codesys, I encounter this error "A bus error has occurred." and "There was no response in time". Could this be because of Modbus Server Channel and Modbus Server Init configuration on my part? Admittedly I am new to Codesys. To get to this stage, I: 1. added some lines to CODESYSControl_User.cfg 2. added "Modbus_COM" in Codesys and set "Serial Port Configuration" under "General" 3. added "Modbus_Master_COM_Port" in Codesys and checked transmission mode is set to "RTU" 4. added "Modbus_Slave_COM_Port" in Codesys and checked server address is set to 1 (also set 1 in my sensor) 5. added 1 channel and 1 init for "Modbus_Slave_COM_Port" under "Modbus Server Channel" and "Modbus Server Init"
Last updated: 2024-07-10

Post by raghusingh77 on Get $100 Off Temu Coupon Code [ACU934948] | + 30% Discount ^{CODESYS Forge talk (Post)}
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Last updated: 2024-10-26

Post by eschwellinger on Correct CAN Driver for EL6751 ^{CODESYS Forge talk (Post)}
Hi, for Control Win : add CmpEL6751CanDrv in the c:\ProgramData\CODESYS\CODESYSControlWinV3x64\E1FA7ABE\CODESYSControl.cfg [ComponentManager] Component.1=CmpTargetVisuStub Component.2=CmpWebServer Component.3=CmpWebServerHandlerV3 Component.4=SysCpuMultiCore Component.5=SysReadWriteLock Component.6=SysCpuBreakpoints Component.7=SysPipeWindows Component.8=CmpEL6751CanDrv for Linux SL or Pi or any ARM device - I think it is already static loaded as component - see plclogger on startup
Last updated: 2023-09-20

Post by bossjosh21 on RevPi Connect RS485 ^{CODESYS Forge talk (Post)}
Hi Sir Kevin. May I know how you came up with this solution. Im a bit confused but I tried to put this. [SysCom] Linux.Devicefile=/dev/ttyRS48 (remember, no 5 at the end!) then set com port in codesys to 6. It also works for me but want to know where did you get this. Thank you.
Last updated: 2023-12-06

Post by stiller on OPC UA RPI 4.8.0.0 Status Code / "out of range" ^{CODESYS Forge talk (Post)}
Hello, I have an OPC-UA server with an information model. For many values, there is a defined range (e.g., 0 to 100). If a client enters a value outside this range (e.g., 120), the StatusCode should change to Bad. How can I accomplish this? Any help is appreciated! Thank you in advance. Best regards, Christian Stiller
Last updated: 2024-07-10

Post by daqe102 on HTTP CLIENT (MAX SIZE) ^{CODESYS Forge talk (Post)}
Hi everybody I'm Paul and I need your knowledge, I am trying to send a huge Json (about 60,000 characters) through http client FB from codesys, however I saw that Maximum size of the http request in btyes are 16000, So, is there any way to resolve this situation? is it posible or there's a another opction to do it?
Last updated: 2024-08-21

Post by thedertom on Help with DynamicTextGetTextW ^{CODESYS Forge talk (Post)}
Hi I try to get korean texts out of a textlist. For that I want to use DynamicTextGetTextW, but I am a little confused how it is supposed to work. The function returns POINTER TO STRING, but how do I get WSTRING? I succesfully used DynamicTextGetText with classical Strings. Thanks in advance!
Last updated: 2024-09-02

Post by damian177 on Codesys Control for Linux SL ^{CODESYS Forge talk (Post)}
Hi, For many years my application has been running on Raspberry Pi. Now I have ported the application to a PC running with Debian OS with Codesys Control for Linux SL. Most of things works. But some is wrong with serial ports. Firstly , I wonder why /etc/CODESYSControl.cfg in Debian is empty ?
Last updated: 2024-09-08

Post by dom4u on Using PEAK CAN PCIe card (IPEH-004040) with Codesys Control RTE V3 ^{CODESYS Forge talk (Post)}
The problem is that newer PeakCAN cards are with CAN FD support and SJA1000 compatibility isnt mentioned anymore on website. anyway, is it possibile to add a seperate entry for it in: [CmpSJACanDrv] ? Edwin, can you give us a hint how to format it?
Last updated: 2024-12-16

Post by helcioburd on How long can a WSTRING be in CodeSys V3? ^{CODESYS Forge talk (Post)}
Thank you, very useful information. I did a library for serial communication and could not understand the reason only 256 chars could be read (after sending more than 256). Following your suggestion, I can now send any number of chars and everything will be received.
Last updated: 2025-03-02

Post by elektron785 on GPIO mit Codesys Virtual Control for Linux ARM64 SL ^{CODESYS Forge talk (Post)}
Hallo zusammen, ich möchte an einem Entwicklungsboard auf dem der i.MX 8M Plus von NXP aufgesteckt ist die vier zur Verfügung gestellten GPIOs als Ausgänge verwenden. Ich habe mir dazu die Readme-Datei des GPIO-Beispiels von "C:\Program Files\CODESYS 3.5.20.40\CODESYS\CODESYS Control SL Extension Package\4.14.0.0\Examples\GPIO" angeschaut Die Übersicht der verfügbaren GPIOs sieht folgendermaßen aus - wobei ich das auf die reduziert habe, die für mich von Interesse sind: gpiochip0: GPIOs 0-31, parent: platform/30200000.gpio, 30200000.gpio: gpio-0 (SODIMM206 ) gpio-1 (SODIMM208 ) gpio-2 ( ) gpio-3 ( ) gpio-4 ( |sd-vsel ) out hi gpio-5 (SODIMM210 ) gpio-6 (SODIMM212 ) gpio-7 (SODIMM216 ) gpio-8 (SODIMM218 ) gpio-9 ( ) gpio-10 ( ) gpio-11 (SODIMM16 ) gpio-12 (SODIMM155 |regulator-usb1-vbus ) out lo gpio-13 (SODIMM157 ) gpio-14 (SODIMM185 |regulator-usb2-vbus ) out hi gpio-15 (SODIMM91 )** Füge ich nun das GPIO (1 Bit)-Gerät in meinem Codesys-Programm hinzu funktioniert der Bus solange bis ich die Richtung in den GPIO-Parametern von "not used" auf "Output" stelle (siehe Bild gpio_parameter). Dann funktioniert nach Download der Bus nicht mehr. Gibt es noch eine andere Möglichkeit das zu steuern oder muss ich noch Einstellungen tätigen? Für die Zeile mit dem echo (export/unexport) aus dem Beispiel fehlen mir trotz sudo die Zugriffsrechte. "The Kernel Linux has deprecated GPIO user space SysFS. However, the kernel config CONFIGGPIOSYSFS is still enabled on Toradex's BSP to support customers using it in their legacy applications. You can check the configuration by running zcat /proc/config.gz | grep CONFIGGPIOSYSFS. For GPIO access from userspace, the new char device API, also known as libgpiod, must be used." Dies steht in der Verwendung der GPIOs - eine Ausführung des zcat-Kommandos liefert ein =y zurück.
Last updated: 2025-03-17

Post by davidmic on Struct Literal ^{CODESYS Forge talk (Post)}
Hi all I want to pass a struct into a function without declaring the struct in a VAR/END_VAR. Is this possible? I think this would be called a struct literal It would look something like this someFB.write(structArgument := MyStruct#(a := 1, b := 1.2), otherArgument := TRUE); With this struct declaration TYPE MyStruct : STRUCT a : INT; b : REAL; END_STRUCT END_TYPE
Last updated: 2025-03-28

Post by snguyen on Atomic and Shared memory? ^{CODESYS Forge talk (Post)}
Hi, I've read that you can perform Atomic instructions like AtomicReadLInt on variables. However, I'd like to know if this uses stdatomic internally. My main question is : Is it possible to share atomic types in shared memory with CodeSys. If so, what types should they be declared as? If not, are the atomic functions lock-free or does it use a mutex?
Last updated: 2025-04-15

Post by davidbo on How do I stop/start logging in my code using AC_Datalog with composer ^{CODESYS Forge talk (Post)}
I have on my Pi successfully deployed an application to which with composer AC_Datalog is added. It starts logging automatically. I want a Visualization with a start/stop button controlling the logging. That must be easy. How do I do that?
Last updated: 2025-07-07

Post by timvh on PHOENIX CONTACT Axioline PLCnext project in CodeSys SodftPLC ^{CODESYS Forge talk (Post)}
1) Based on your first screenshot. Do NOT filter on "Phoenix". Then first select the Ethernet adapter (of CODESYS) and add this to your device. 2) Then to this Ethernet adapter add a Profinet Controller of CODESYS. 3) Then to this Profinet Controller, add your Phoenix Profinet coupler/adapter.
Last updated: 2025-09-09

Post by bilalchaudhry33 on IFM Controller CR7XXs ^{CODESYS Forge talk (Post)}
HI, I am new to Embedded and telematic field . I am using codesys to program IFM controller and try to communicate two IFM controller over the CAN bus. I need some help and link tu tutorial I have no idea about codesys . I want to do in ST. I am using CAN RAW library from IFM . On following SS there is red triangle on CAN as well.
Last updated: 2025-09-24

Post by jzhvymetal77 on Special Chars in Visualizationfor QR code string ^{CODESYS Forge talk (Post)}
Ok, I got UTF-8 encoding working by encoding the full block character using [16#E2, 16#96, 16#88], which corresponds to U+2588 "█". Moving forward, I’ll use this for creating a QR code with Version 10-M (byte mode). This version allows up to 213 characters to be encoded.
Last updated: 2025-10-04

Post by davidbo on i2c How does CODESYS handle exception or error messages. ^{CODESYS Forge talk (Post)}
For Raspberry Pi I have made a python script which regularly read a bulk of data over the ic2 from a device. Sometimes I get an Exception an IOError. I assume similar things can happen in CODESYS. So how does CODESYS handle that? Can I get any info about such an event?
Last updated: 2024-02-07

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