Post by ton on Length of string and Array of bytes ^{CODESYS Forge talk (Post)}
When you use a string value 0 will be the end terminator. Everything after this will not be in the string. I guess byte 2394 has a value 0.
Last updated: 2025-04-01

Post by mariacugnier on Reading Devices ComState ^{CODESYS Forge talk (Post)}
Does anyone know how to access the ModbusTCPSlave_Diag.ComState without declaring each one by the device name? I attached them to an array but since I may have dozens of devices this is still a bad solution.
Last updated: 2025-05-22

Post by mariacugnier on Reading Devices ComState ^{CODESYS Forge talk (Post)}
Does anyone know how to access the ModbusTCPSlave_Diag.ComState without declaring each one by the device name? I attached them to an array but since I may have dozens of devices this is still a bad solution.
Last updated: 2025-05-22

Post by nxbp on Cam Editor And Cam Problem ^{CODESYS Forge talk (Post)}
I Created cam with 361 cam points ( 0,1,2.....360 ). The values in the Cam_A array do not match the Cam points entered in the Cam editor.
Last updated: 2025-06-22

Post by naidureginald on creating a visualization table ^{CODESYS Forge talk (Post)}
hi all im trying to create a visualisation table for a axis alarms list. upon entering the data array, i recieve a message as attached. any help would be much appreciated.
Last updated: 2024-01-03

Post by apurv on Cannot pass array of constant size to a function as a reference ^{CODESYS Forge talk (Post)}
Could not find the solution to this issue but I have side stepped this by creating a global variable MAX_SIZE.
Last updated: 2024-01-08

Post by gurkan on OPCUA array max length? ^{CODESYS Forge talk (Post)}
2000 works. When testing with UA Expert there is a timeout from the OPCUA Server when trying to subscribe to the variable CPU do not seems to be to affected. The memory(RAM) however is building up
Last updated: 2024-02-19

Post by rafaelbrito on Error while processing the visualization: Client id not present or no longer valid ^{CODESYS Forge talk (Post)}
I'm having the same problem after configuring array in Alarm Group (I configured only one item per line, since Alarm Group does not work with structures / arrays). Can someone help us?
Last updated: 2024-02-20

Post by rafaelbrito on Error while processing the visualization: Client id not present or no longer valid ^{CODESYS Forge talk (Post)}
I'm having the same problem after configuring array in Alarm Group (I configured only one item per line, since Alarm Group does not work with structures / arrays). Can someone help us?
Last updated: 2024-02-20

Post by rafaelbrito on Error while processing the visualization: Client id not present or no longer valid ^{CODESYS Forge talk (Post)}
I'm having the same problem after configuring array in Alarm Group (I configured only one item per line, since Alarm Group does not work with structures / arrays). Can someone help us?
Last updated: 2024-02-20

Post by rafaelbrito on Error while processing the visualization: Client id not present or no longer valid ^{CODESYS Forge talk (Post)}
I'm having the same problem after configuring array in Alarm Group (I configured only one item per line, since Alarm Group does not work with structures / arrays). Can someone help us?
Last updated: 2024-02-20

Post by dominggus on Recipe Manager - RecipeManCommands, load & write wrong values, Bug? ^{CODESYS Forge talk (Post)}
I've workaround it by not using an array but 30 instances of the struct and putting these in the recipe, and then using converter functions to save and load
Last updated: 2024-03-02

Post by kuuki on Losing focus of variable ^{CODESYS Forge talk (Post)}
Hi. Does anyone know how to fix a problem with losing focus of a variable in FBD editor. Sometimes when trying to edit variable name, array index, etc. in network, editor randomly exits "text edit mode" and variable is replaced by text you were typing.
Last updated: 2024-03-26

Post by damian177 on Raspbery Pi and Calendar ^{CODESYS Forge talk (Post)}
Hi, In my visualisation I have a "Calendar" control. I would like save day and month which will be clicket by operator on this control . forexample save in string array. How do this ?
Last updated: 2024-04-23

Post by damian177 on Visualization - table element ^{CODESYS Forge talk (Post)}
Hi, In my application I use table elemnt with filled by STRING ARRAY. I would like to implement the following functionality : When I click on second row, that this row will be cleared. Anyone can help me?
Last updated: 2024-04-25

Post by mxj262 on FB having single input but initialized with Array ^{CODESYS Forge talk (Post)}
Ok yes now the loop has stopped when I set sum to zero before the for loop. Why will it retain the sum value from the last call?
Last updated: 2024-05-06

Post by gcodejedi on The element of type 'VisuFbElemImage' could not be updated. Reason: Index was outside the bounds of the array. ^{CODESYS Forge talk (Post)}
Hello, I am experiencing this exact same issue. Were you able to get yours resolved? If so, would you mind sharing the solution you discovered? Thanks!
Last updated: 2025-11-03

Post by scoob on ModbusFB - Slow Response Time ^{CODESYS Forge talk (Post)}
Hello, I have been trying to use the ModbusFB functions so I can put some code into libraries, but it seems to be very slow for me. I have a Modbus device with 100ms registers. I previously setup 10 channels in the 'traditional' Modbus Slave with channels and mappings - and set a cyclic trigger at 100ms - this worked fine. I then tried the ModbusFB example, and setup reading the same 10 blocks of modbus addresses, copying the example and putting all of the requests into an array and triggering the requests sequentially. I timed how long the requests are taking to get round to each one, and it is around 1s 450ms. How do I speed this up to match the cyclic time? IF NOT(init) THEN init := TRUE; // Set the required IP address: ipAddress[0] := 192; ipAddress[1] := 168; ipAddress[2] := 1; ipAddress[3] := 10; // Pass the required IP address to the clinet FB: client_NetworkSwitch.aIPaddr := ipAddress; client_NetworkSwitch.udiLogOptions := (ModbusFB.LoggingOptions.ClientConnectDisconnect OR ModbusFB.LoggingOptions.ClientReceivedValidReplies); // Try to connect the client client_NetworkSwitch(xConnect:=TRUE); // Configure all the channels to read connecting them to the client: portStatus_Request(rClient := client_NetworkSwitch, uiStartItem := 4096, uiQuantity := 32, pData := ADR(portStatus), udiReplyTimeout := udiReplyTimeout); portSpeed_Request(rClient := client_NetworkSwitch, uiStartItem := 4352, uiQuantity := 32, pData := ADR(portSpeed)); flowControl_Request(rClient := client_NetworkSwitch, uiStartItem := 4608, uiQuantity := 32, pData := ADR(flowControl)); linkUpCounter_Request(rClient := client_NetworkSwitch, uiStartItem := 5888, uiQuantity := 32, pData := ADR(linkUpCounter)); txPacketCounter1_Request(rClient := client_NetworkSwitch, uiStartItem := 8192, uiQuantity := 100, pData := ADR(txPacketCounter1)); txPacketCounter2_Request(rClient := client_NetworkSwitch, uiStartItem := 8292, uiQuantity := 28, pData := ADR(txPacketCounter2)); rxPacketCounter1_Request(rClient := client_NetworkSwitch, uiStartItem := 8448, uiQuantity := 100, pData := ADR(rxPacketCounter1)); rxPacketCounter2_Request(rClient := client_NetworkSwitch, uiStartItem := 8548, uiQuantity := 28, pData := ADR(rxPacketCounter2)); txErrors_Request(rClient := client_NetworkSwitch, uiStartItem := 8704, uiQuantity := 64, pData := ADR(txErrors)); rxErrors_Request(rClient := client_NetworkSwitch, uiStartItem := 8960, uiQuantity := 64, pData := ADR(rxErrors)); // Trigger all client requests initially FOR clientRequestsCnt := 0 TO (SIZEOF(clientRequests)/SIZEOF(clientRequests[0]))-1 DO pClientRequest := clientRequests[clientRequestsCnt]; pClientRequest^.xExecute := TRUE; END_FOR // Prepare sequential trigger / control of client requests. clientRequestsCnt := 0; pClientRequest := clientRequests[clientRequestsCnt]; END_IF // Call the client to do request processing: client_NetworkSwitch(); // Now we trigger client request sequentially ... IF NOT pClientRequest^.xExecute AND NOT pClientRequest^.xDone AND run AND client_NetworkSwitch.xConnected THEN pClientRequest^.xExecute := TRUE; END_IF // .. and check result/error IF pClientRequest^.xExecute AND run AND client_NetworkSwitch.xConnected THEN IF pClientRequest^.xDone THEN // Prepare next trigger of client request (a rising edge of xExecute) pClientRequest^.xExecute := FALSE; IF clientRequestsCnt < SIZEOF(clientRequests)/SIZEOF(clientRequests[0])-1 THEN // next client request clientRequestsCnt := clientRequestsCnt + 1; ELSE clientRequestsIterationCounter := clientRequestsIterationCounter + 1; clientRequestsCnt := 0; END_IF pClientRequest := clientRequests[clientRequestsCnt]; END_IF END_IF I did try a semi-coded way using the IoDrvModbusTCP library, and setting the slave com settings, then 10 commands and 10 requests, then using a TP on xDone as a pause, before triggering another request - this is time the delay is around 120ms - so the device is fine with the speed, just something I am doing wrong in the ModbusFB method I am sure.
Last updated: 2024-04-26

Post by janderson on OPC UA Server limitations, large array crashes runtime ^{CODESYS Forge talk (Post)}
What are the limitations of the OPC UA Server? I am trying to get data off my PLC that is acquired at high rates (~50k samples/s) so I am storing them in arrays and trying to get the arrays off the PLC. When I attempt to read a ~200k element array through OPC UA the server and runtime crashes (requiring tools -> update linux arm64 -> start runtime). Is there a better way to get highspeed data off? The ACDatalog library seems a bit irritating to use so I would prefer to go through OPC UA.
Last updated: 2023-08-23

Post by simotion on Pointer to Softmotion axis ^{CODESYS Forge talk (Post)}
In my projet I use Softmotion. There are several Softmotion axis (type SM_Drive_Virtual). In the Global Variable List I have an array of pointers to the adress of the Axis. Axis : ARRAY[1..iMaxCntAxes] OF POINTER TO AXIS_REF_SM3 := ADR(AX01_Axis), // [1 ADR(AX02_Axis), // [2] This works, but when compiling I get the message : . [WARNING] E3D: GVL Device: PLC Logic: Application: C0564: A reference to uninitialized variable AX01_Axis is used for initialization of Axis. Accessing the uninitialized variable may result in unexpected behavior. [WARNING] E3D: GVL Device: PLC Logic: Application: C0564: A reference to uninitialized variable AX02_Axis is used for initialization of Axis. Accessing the uninitialized variable may result in unexpected behavior. Is there a way when initializing to force the hardware (softmotion axis) to first initialize and then the Global Variable List?
Last updated: 2023-10-25

Post by gilbertamine on Comparing Arrays of structure ^{CODESYS Forge talk (Post)}
Hi Everybody, I'm looking for a simple way of comparing two array of a structure. My structure is define like this : TYPE Positions_T : STRUCT PosX: DINT; PosY: DINT; PosZ: DINT; END_STRUCT END_TYPE I have multiples Var : ARRAY [0..220] OF Positions_T, that I need to compare quickly. I don't really want to do a Loop that goes by every 220 points and compare each one of them so I was wondering if there is another way. I came accross the MEM.Compare function, but it require to know the size in Bytes of the memory, and I don't know how to do that... Has anybody an idea on how to do the comparing easily ? Thanks in advance
Last updated: 2024-08-22

Post by dkugler on Webvisu client connection monitoring ^{CODESYS Forge talk (Post)}
you can give this code snippet a try. It's extracted and simplyfied from my code: Install VisuElemBase lib if not installed yet. Execute in visu task: VAR pClientData : ARRAY [-1..100] OF POINTER TO VisuElemBase.VisuStructClientData; END_VAR VisuElemBase.g_ClientManager.BeginIteration(); pClientData := VisuElemBase.g_ClientManager.GetNextClient(); WHILE pClientData <> 0 DO pClientData[pClientData^.GlobalData.GlobalClientID] := pClientData; END_WHILE You have to make shure every no longer updated pointers in the array have to be deleted and no longer used by your code! Usage of this pointer access at your own risk :-) Works with SP16. From SP17 and newer there will be warnigs etc. using this solution as I remember. It will be great, if Codesys publishes a example or give a hint how to accesse this client values with the VisuUtil lib or other future-proof way!
Last updated: 2024-09-09

Post by imdatatas on String length issue in GetRecipeNames method ^{CODESYS Forge talk (Post)}
Hi, If the string length in the GetRecipeNames method is lower than the default value, there will be a problem with the resulting Recipe file names. For example; When the method in the link is called, let's say the defined string length is 19. In this case, the string content is corrupted as in the image. strArr: ARRAY[0..9] OF STRING(19); https://content.helpme-codesys.com/de/libs/Recipe%20Management/Current/pou-RecipeManCommands/GetRecipeNames.html The same problem does not occur when the string definition is made in the default size. strArr: ARRAY[0..9] OF STRING; FYI Regards, Imdat
Last updated: 2025-02-19

Post by imdatatas on String length issue in GetRecipeNames method ^{CODESYS Forge talk (Post)}
Hi, If the string length in the GetRecipeNames method is lower than the default value, there will be a problem with the resulting Recipe file names. For example; When the method in the link is called, let's say the defined string length is 19. In this case, the string content is corrupted as in the image. strArr: ARRAY[0..9] OF STRING(19); https://content.helpme-codesys.com/de/libs/Recipe%20Management/Current/pou-RecipeManCommands/GetRecipeNames.html The same problem does not occur when the string definition is made in the default size. strArr: ARRAY[0..9] OF STRING; FYI Regards, Imdat
Last updated: 2025-02-19

Post by jampid on Struct Literal ^{CODESYS Forge talk (Post)}
Bonjour Davidmic, Il n'est pas possible d'associer une méthode à une fonction. Cela est possible sur les Blocs fonctions. En utilisant ta DUT MyStruct, je créé une fonction avec en entrée un tableau de structure :** FUNCTION F_F3 : REAL VAR_IN_OUT // bien définir un type IN_OUT IN_ptrINT: ARRAY[*] OF MyStruct; // la taille sera définie ultérieurement/ END_VAR VAR _di: DINT; // Index de parcours du tableau pour l'écriture dans les cases ENDVAR ============== //Programme F_F3: FOR _di := LOWER_BOUND(IN_ptrINT,1) TO UPPER_BOUND(IN_ptrINT,1) DO IN_ptrINT[_di].som:=IN_ptrINT[_di].a + IN_ptrINT[_di].b; END_FOR J'utilise ensuite cette fonction dans un POU Programme : PROGRAM Test_F_Fx VAR _aiTAB9:ARRAY[0..3] OF MyStruct := [(a := 1, b := 1.2), (a := 2, b := 2.2), (a := 3, b := 3.3), (a := 4, b := 4.4)]; END_VAR ** ==========** F_F3(IN_ptrINT:=_aiTAB9 ); Voilà l'idée pour avancer. Une autre idée, est d'utiliser les pointeurs ou les références. Bon développement!
Last updated: 2025-04-07

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