Post by installwhat on Ethercat and profinet on together ^{CODESYS Forge talk (Post)}
I'm curious about the impact of having profinet and Ethercat (specifically softmotion so frame at start of task?) running together. Since it's advised to access the data from the bus task should have both profinet io and ethercat on the same task? Are there any implications around this one should be aware of especially since the frame at task start is just, so far as I'm aware, an ethercat thing? Thanks
Last updated: 2025-04-08

Post by gabrielarffa on Modbus TCP/IP having problems with global variables ^{CODESYS Forge talk (Post)}
I'm using Modbus TCP/IP to communicate Codesys with Elipse E3 as the master for a college project. I have made a list of global variables to organize the programming in two different POUs. The problem is, when I try to do the mapping of variables, the program informs me of an error due to the identifiers having a "." on their names. Do I have to reorganize my code to make it an unified block or is there a way to declare their names without changing all the code structure?
Last updated: 2025-05-20

Post by gabrielarffa on Modbus TCP/IP having problems with global variables ^{CODESYS Forge talk (Post)}
I'm using Modbus TCP/IP to communicate Codesys with Elipse E3 as the master for a college project. I have made a list of global variables to organize the programming in two different POUs. The problem is, when I try to do the mapping of variables, the program informs me of an error due to the identifiers having a "." on their names. Do I have to reorganize my code to make it an unified block or is there a way to declare their names without changing all the code structure?
Last updated: 2025-05-20

Post by wbj0t on Update project from SP20 to SP21 ^{CODESYS Forge talk (Post)}
Hello everyone. I have a problem: I installed new version of codesys IDE. When I try open project in this new version, I have many errors about Visu: rectalnge/button/frame/etc does not exist. How update properly project? 20+ pages of visu pages from 100+ frames and all visu elems looks like "Error image". It is not problem of SP20->SP21. Any update has problems from visu side.
Last updated: 2025-06-09

Post by eschwellinger on Changed Device of Rapberry Pi to MC SL instead of standard SL and cannot connect anymore ^{CODESYS Forge talk (Post)}
1) https://store.codesys.com/en/codesys-control-for-raspberry-pi-sl.html -> SL: Restrictions The combination of Raspberry Pi and a CODESYS Runtime is for private use, test and teaching purposes. Commercial use is not permitted. 2) you could switch between them by /etc/codesyscontrol/CODESYSControl_User.cfg [CmpRasPi] Architecture=armv7l for MC: armv7l for SC: armv6l for 64Bit: aarch64 or in the Deploytool:
Last updated: 2025-08-06

Post by sandro66 on Application-based license Modbus Channels ^{CODESYS Forge talk (Post)}
Hi Gatto, Using version 3.5.21.xx, it is no longer possible to use Modbus function blocks (I make extensive use of these FBs.)as shown in the example. https://content.helpme-codesys.com/en/CODESYS%20Examples/_ex_modbus_example.html The compiler detects one Modbus instance for each instance of the communication FB block. The example program above, although simple, reports 8 Modbus instances when compiled with the latest version. Codesys Support says that you must use fieldbus I/O mapping, but this will result in the loss of the ability to programmatically modify communication parameters. Sandro
Last updated: 2025-09-04

Post by sigurdrb on Network log messages ^{CODESYS Forge talk (Post)}
Hi, I'm having some trouble with an OPC client connecting to the PLC. It could be that the problem is on the client side of things. The PLC have UPS power, but the switch and OPC client does not. It could explain some of the log messages. Could any of you help debugging by the log messages in the attachment? And if possible point me to the right library that explains the different messages? Thanks for all the help.
Last updated: 2025-09-11

Post by martinlithlith on Mux I2C ^{CODESYS Forge talk (Post)}
hi! this is also a delayed answer, sorry for this. when coding in python i get the TCA9548a working. Is there someone who knows how big of a effort it would be to update Stefan's original code to make it work with a more up to date version of codesys or should i downgrade my system? andrax - are you using a downgraded version of codesys or have you downgraded all the libraries? What Oscat lib are you using? what version? thanks for your reply! Martin
Last updated: 2023-12-31

Post by tvm on SEND_RECV_MSG function block on Schneider Machine Expert ^{CODESYS Forge talk (Post)}
Anyone else using the SEND_RECV_MSG function block for RS-485 communication on Schneider Machine Expert? I have had ongoing issues with it for several years, which Schneider tech support is aware of, but hasn't been able to fix. The latest version of Machine Expert (v2.2) appears to have broken some of the functionality altogether. I'd be interested in hearing from anyone else using this platform for serial communication.
Last updated: 2024-01-03

Post by otdeveloper on IEC 61499 ^{CODESYS Forge talk (Post)}
It is being worked on by many companies and its even-driven function blocks seem like a natural evolution of the object oriented industrial programming I have seen Gary Pratt (author of the Book of CODESYS and much more) so expertly implement and explain. I would expect CODESYS to have this front and center on their sights and, if they do not, I would be very interested in learning why.
Last updated: 2024-02-09

Post by matthew on New Ladder Diagram conversion does not work due to missing features ^{CODESYS Forge talk (Post)}
Hi @eschwellinger, I have been trying out v1.0 of the new ladder and have a few questions. I have warnings Expression or part of it has no effect I can't get rid of them, what do they exactly mean? Using the ST_Block, is there a way when online to open the ST_Block and view the running code? Thanks!
Last updated: 2024-02-09

Post by martinla on New Codesys Library Dependencies ^{CODESYS Forge talk (Post)}
When creating a new Codesys library, I am getting 2 errors for missing libraries. I can see that I am using newer versions of these in the library manager (3.5.17.0 and 3.5.19.0 opposed to 3.5.8.0 and 3.5.7.0 stated in the errors). IDE Version is V3.5 SP19 Patch 6. The "Download missing libraries..." button in Messages list is not doing anything. Why is it looking for older versions of these libraries? Can this be fixed by using the newer versions? How can I download & install the older version of these libraries?
Last updated: 2024-02-29

Post by alexgooi on Disable OPC-UA server ^{CODESYS Forge talk (Post)}
Dear Forum, I recently updated to the newest Codesys IDE (3.5 SP19 patch 5) The program wouldn't download cause of the amount of OPC-UA server tags (see picture) I'm not planning on using the OPC-UA server and therefore I unchecked the "Support OPC-UA features" checkbox in the symbol configuration. But this didn’t solve the issue of the OPC-UA server exceeding its license. How can I disable the OPC-UA server while still maintaining the symbol configuration. Thank you in advance Alex
Last updated: 2024-03-01

Post by dominggus on Recipe Manager - RecipeManCommands, load & write wrong values, Bug? ^{CODESYS Forge talk (Post)}
I still have the same problem even when updating to CODESYS Recipes 4.3.0.0. My scenario: I'm trying to save/load an array of structs using the Visu: - Execute Command > "SaveRecipeAs" works properly - Execute Command > "LoadWriteRecipe" works not entirely: the structs of array[6] and array[7] should have been empty but were duplicates of array[4] and array[5]... the struct contains 26 variables and the array's length is 30.. Maybe there is a upper limit on recipe variable count?
Last updated: 2024-03-02

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 i-campbell on Publish a JSON payload via MQTT Publish (using IIot Libraries) ^{CODESYS Forge talk (Post)}
your are sending as a WSTRING which is UTF16, but your receiver is interpriting as UTF8. Change the receiver to use UTF16, or better change your sender to convert to UTF8. You publish the entire storage space (SIZEOF) Instead of the number of bytes of actual text (StrLenA) try using utf8JsonData : STRING(2000); JSON.Stu.ConvertUTF16toUTF8( ADR(wsJsonData), ADR(utf8JsonData), SIZEOF(utf8JsonData) ); and change your publish to mqttPublish( mqttClient:=mqttClient, pbPayload:=ADR(utf8JsonData), udiPayloadSize:=To_UDINT(JSON.Stu.StrLenA(ADR(utr8JsonData))), wsTopicName:=topic, mQTTPublishProperties:=mqttPublishProperties );
Last updated: 2024-04-10

Post by tk096 on Fieldbus has lost synchronicity ^{CODESYS Forge talk (Post)}
Hi, a few suggestions on how to tackle the problem: - it might help to increase the cycle time of the ethercat task - increase the value of the ethercat parameter DCInSyncWindow (https://content.helpme-codesys.com/en/libs/IODrvEtherCATDriver/Current/pou-IoDrvEtherCAT/DCInSyncWindow.html) (see attached image) - enable FrameAtTaskStart (https://content.helpme-codesys.com/en/libs/IODrvEtherCATDriver/Current/pou-IoDrvEtherCAT/FrameAtTaskStart.html) in the ethercat master (see attached image) - if the drives can handle the synchronization problems, checking of the synchronization can be deactivated using SMC_Set_ETC_DCSyncSupervision (https://content.helpme-codesys.com/en/libs/SM3_Drive_ETC/Current/SMC_Set_ETC_DCSyncSupervision.html).
Last updated: 2024-04-11

Post by gseidel on Discontinuity of A/B/C axis movement. ^{CODESYS Forge talk (Post)}
Hi jonasz, you already solved it, I'm answering here for the sake of others with a similar question. You can provide the slope of the A/B/C axis with the U/V/W word. See example 3 here: https://content.helpme-codesys.com/en/CODESYS%20SoftMotion/_sm_cnc_din66025_additional_axis.html If you don't want to change the G-Code, the function block SMC_RecomputeABCSlopes can compute the slopes automatically. https://content.helpme-codesys.com/en/libs/SM3_CNC/Current/SM_CNC_POUs/SoftMotion-CNC/SoftMotion-Function-Blocks/SMC_RecomputeABCSlopes.html Best regards, Georg
Last updated: 2024-04-30

Post by umair on Code for reading 4 address to get 1 value of sensor (Ethernet IP) ^{CODESYS Forge talk (Post)}
Hi all, I want to ask, how do I write code to read multiple address for Ethernet IP communication protocol? Because this multiple address will produce one reading of a sensor that I am currently using. I want to read the value of the sensor. https://global.discourse-cdn.com/business6/uploads/wago/original/1X/7a79f4ad7ce474b9383b8550356d984defd9f3a0.png The addresses are in Byte. The 4 addresses are 89,90,91,92. Thanks in advance. Best regards, Umair
Last updated: 2024-05-06

Post by miodusy on CODESYS Control Standard S and Beaglebone ^{CODESYS Forge talk (Post)}
Hi, CODESYS Control Standard S + CODESYS Visualization L, CODESYS Control for Beaglebone 4.11.0.0, CODESYS V3.5 SP20 + (64-bit) I have problem that license manager say that this device is not supported when i try active whole license. When I select only runtime and communication it is go next step, but then I no have license on in Visualistion section, all of rest of software metric licese is ok(IO, Istances of com et, code size etc.). Thanks!
Last updated: 2024-05-11

Post by corriibme on Setting array values with JSON Utilities SL ^{CODESYS Forge talk (Post)}
I have been trying to set an array value to a JSON structure of this form: {"key": [1,2,3,4]} While I have been able to create the key and set its value to an empty array, I've not had any luck in putting any value in that array. objindex:= fb_JBuilder.SetKeyWithArray("Key6", diParentIndex := diRootIndex); objindex2:= fb_JBuilder.SetValue(value:= iValue2, diParentIndex:= objindex); iValue2: ARRAY[0..3] OF INT:= [1,2,3,4]; The two lines of code above produce {"key6": []} . The second line essentially has no effect.
Last updated: 2024-05-12

Post by robpqs on Visual error with cut/shredded texts ^{CODESYS Forge talk (Post)}
Hello, This is an old topic but it might help. This can/should be solved by either of the solution below 1. disabling the "Support client animations and overlay of native elements" option in the visualization Manager (which is handy) 2. disabling the "Hardware acceleration" of the browser. Saw it happening on some clients/PC and on other it works fine with the same webvisu... (Version 3.5.19.20 with visu package 4.4.0.0) Hopefully it will be fixed it in a next release. I haven't tested the 4.5.0.0 visu packages yet. RP,
Last updated: 2024-05-27

Post by arcadium on TargetVisu element stacking on top of each other ^{CODESYS Forge talk (Post)}
Hello, I'm new here so if I do something wrong please bare with me. I am using raspberry pi touchscreen made by comfile (CPi-C070WR4C). I also have a window 11 pc where I would like to have a second visualisation, but when I run a TargetVisu with it, all elements of the visualisation end up in the top left corner stacked on top of each other. I have same results running targetVisu on my laptop. Maybe someone had same issues and know the solution? Simas
Last updated: 2024-06-17

Post by totorovic on CSVReaderInit returns error : INVALID_HANDLE ^{CODESYS Forge talk (Post)}
Actually no solution. We are waiting Codesys reply. Latest version of library : licence error message Version 1.0.0.5 : INVALID_HANDLE error message
Last updated: 2023-08-21

Post by i-campbell on Ping By Name ^{CODESYS Forge talk (Post)}
What library is that? Net Base Services Is there a version 9.2 ? I've not heard of a version 9.2
Last updated: 2023-08-25

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