Post by viksym on How to get the motor scaling value from code ^{CODESYS Forge talk (Post)}
If anybody finds this in the future, I managed to do it like this: scalingValue := EncoderPulseCountPerRev / ABS(AxisName.fScaleFactor); No need to use MC_ReadParameter as I am able to read this value directly from the axis object. Using an absolute value of the fScaleFactor is there in case the axis is set as inverted, in which case it would be a negative value. I was not able to figure out how to get EncoderPulseCountPerRev programatically, but since all my servos use an encoder with pulse count per revolution of 16#800000, the final equation looks like this: scalingValue := 16#800000 / ABS(AxisName.fScaleFactor);
Last updated: 2025-08-19

Post by zer0g on Modbus Client Request Not Processed ^{CODESYS Forge talk (Post)}
I'm using the code bellow which is based on the Codesys example: FUNCTION_BLOCK MODBUS_master_example_ST VAR initDone : BOOL := FALSE; aIPAddress : ARRAY [0..3] OF BYTE := [127,0,0,1]; clientTcp: ModbusFB.ClientTcp; // buffer to read input registers aDataInputRegisters : ARRAY[0..9] OF UINT; // some client requests clientRequestReadInputRegisters: ModbusFB.ClientRequestReadInputRegisters; xExecute: BOOL; END_VAR IF NOT initDone THEN initDone := TRUE; // configure clientTcp clientTcp(aIPaddr:=aIPAddress, uiPort:=502, udiLogOptions := ModbusFB.LoggingOptions.All); // configure clientRequestReadInputRegisters clientRequestReadInputRegisters(rClient:=clientTcp, uiUnitId:=1, udiTimeout:=TO_UDINT(T#1000MS)); END_IF // call the client FB's clientTcp(); clientRequestReadInputRegisters(rClient:=clientTcp,xExecute := xExecute AND NOT clientRequestReadInputRegisters.xBusy ,uiStartItem:=2, uiQuantity:=3, pData:=ADR(aDataInputRegisters[0])); As you can see the clientTCP is called cyclically with the same result.
Last updated: 2024-05-30

Post by edepalos on Text list from sd card ^{CODESYS Forge talk (Post)}
Hi guys, I have a textlist in my project which is working just as expected in a drop down list. I would like to move this text list to a sd card and access it from there, because I want to ease the editing of the contents of this textlist. I'm imagining a solution like the operator shuts down the plant, takes the sd card out, edits the textlist on the card with a windows machines notepad, then reinserts the card in the PLC and restarts the plant, having the new content of the textlist populating the dropdown list. I'm sorry that I'm asking you to spoonfeed me, but I did not find anything straightforward to do this... I saw in the Project>Project settings>Visualisation a relative path thingy, but I have the plant in operation and I would not like to make 100 trial and errors right now... I'm also not interested in SysLib file read commands and stuff, I would just like to access the file from the cards part, I don't want to replace its contents dynamically or such... nor I have language files or recipes... Thank You in advance! Br, Ede
Last updated: 2024-01-16

Post by dnordenberg on BOOL variable in OPC UA and modbus simultaneously ^{CODESYS Forge talk (Post)}
How can I have an BOOL variable that is read/write in both modbus TCP server and from OPC UA at the same time? Variables with %MX.n %QX.n addressing which is used for BOOL/coils in modbus server is not allowed in OPC UA symbol list on Schneider M251 controllers. I have already asked on Schneiders forum but there are not a lot of codesys experts over there :( So OPC symbols can't have a address and the modbus TCP server needs a address. So how should I do it then? It seems like an impossible combination. Since I want read/write access from both ways I can't just simply make a second variable and assign it the value of another since it would be a one way assignment. I also tried using VAR_CONFIG which then makes the address syntax %Q or %M in my main variable list and that fools OPC UA Symbol Configuration to allow it and then I add the complete %MX.n address of it in the VAR_CONFIG list. This semi works, I can toggle the BOOL from modbus but the OPC UA symbol seems to be read only. It displays symbol status but nothing happens when I toogle it. I think I need another way to have the variables and symbols pointing to the same bits in memory... My plan B is to write a BOOL array compare FB that saves a history bit from previous cycle and if that does not match current status at next cycle for either the OPC symbol or the modbus variable then it copies the new status over to the other. Maybe ugly but it's like my last alternative. Kind regards David
Last updated: 2025-07-14

Post by george32 on CSV file and string manipulation. ^{CODESYS Forge talk (Post)}
Dear folks, I think I have a rather simple question but I could not find the right answer to my question: I have made with Excel a CSV file where I would like to have some general data regarding my program variables. I have made an program what let me read the file. The string I am currently get is at follows: 'IP_Adres;192.168.45.12$R$NPort_number;2000$R$NCycle_time;43$R$NStart_Standard_IO;20$R$N' Now I want to split the string in multiple part, which I later would connect to the right variable. By Google and experimenting I have reached to the following code for the first part of the splitting proces: // Splitting the BOM of the string: Received_string := FileReadString; IF LEFT(STR:=New_string,3)= '' THEN Received_string_without_BOM :=RIGHT(STR:= Received_string,SIZE:= (LEN(STR:= Received_string))-3); END_IF //Splitting the remaining string in part for later declaration. WHILE index = 0 DO index_split_part := FIND(STR1:= Received_string_without_BOM,STR2:= '$R$N'); Part_of_String[index]:=LEFT(STR:=Received_string_without_BOM, SIZE:= index_split_part); index := index + 1; END_WHILE However in the splitting proces I could not understand what is really happening. I understand that the Find() function returns the first value the $R$N in the Received_string_without_BOM. This would mean that the index_split_part := 23 I|P| _ |A |d|r|e|s|;|1_|9 |2 |. |1 |6 |8 |. |4 |5 |. |1 |2 |$ |R |$ |N |P | 1|2| 3 |4 |5|6|7|0|9|10|11|12|13|14|15|16|17|18|19|20|21|22|23|24|25|26|27| So the next part is to read the first 23 characters of the Received_string_without_BOM with the LEFT() function. I expected that the outcome the following was: 'IP_Adres;192.168.45.12$'. However the outcome is: 'IP_Adres;192.168.45.12$R'. I do not understand where the R after the $ sign comes from, because its place is 24 so it would not be added to the part_of the_string[index]. If I hard coded value 24 for the size it gives me the following return: 'IP_Adres;192.168.45.12$R$N'. I would expect everything till the R but the code adds the $N also to the string. I hope someone could explain to my what I am seeing wrong in my point of view? With kind regards, George
Last updated: 2024-09-27

Post by aott33 on Webvisu NO load ^{CODESYS Forge talk (Post)}
Should I be looking for anything in particular in the PLC Log? Attached is the xml file from the PLC logger.
Last updated: 2023-09-26

Post by kumareasu on Runtime System Update ^{CODESYS Forge talk (Post)}
When I change the hardware Do I need to buy licence After three years ? Please refer the jpg file.
Last updated: 2023-11-26

Post by vladimirsmall on Send data to USB ^{CODESYS Forge talk (Post)}
Hello/ Need send some file ( for example Array of string) to USB. Which library need used for this. Thank you
Last updated: 2024-07-20

Post by mikek10 on Connection error to Wago 750-363 EtherNet/IP Adapter ^{CODESYS Forge talk (Post)}
This file is still useful but no longer available?
Last updated: 2024-07-22

Post by justthefacts77 on How to generate an "ENI" file ^{CODESYS Forge talk (Post)}
I think this is really now "Generate EtherCAT XML" command which gives the ENI topology info.
Last updated: 2024-08-08

Post by wbj0t on Raspberry Pi CM4. CoDeSyS files corrupted after hard reset. ^{CODESYS Forge talk (Post)}
Hello everyone. Raspberry Pi CM4 after some 1 week of work was hard reset mannualy several times and after these hard resets User Management file was missed (when click login button, enter login/password, error: User Management File missed). Also programm can not open file via SysFile library, but this file exists and size of him is 0 bytes, but must be more any way (I keep some kind of archive via this lib). What happens, how files corrupted? Where do I need try to find this error of the codesys or system whole? In the log files of codesys nothing interesting about this happens. Thanks for reading Is this enough hold PlcLogic and SysFileMap.cfg as reserve copy in another place for restoring the programm? And how automate restoring actions if programm files corrupted?
Last updated: 2024-09-16

Post by mubeta on Strange problem with the ‘MC_SetPosition’ function ^{CODESYS Forge talk (Post)}
Here is the archive of the simulation project: https://drive.google.com/file/d/1n74Qy-1yLPpI2OK4FaZO5q50y2uTa0Wr/view?usp=drive_link
Last updated: 2025-01-12

Post by sakthivel on Library Files missing Issue ^{CODESYS Forge talk (Post)}
Whn opening the backup file in codesys it showing error (The following librarirs could not load - UNPACK16.lib, IEEE754 library_P.lib
Last updated: 2025-05-15

Post by nz-dave on Codesys 3.5.21 fails to copy file to USB ^{CODESYS Forge talk (Post)}
So did you get it working?
Last updated: 2025-05-27

Post by chsp on Frustration-Fueled Feedback on Project File Management and Git Integration ^{CODESYS Forge talk (Post)}
Hey CODESYS, we are in 2025. Did you hear about Gibhub Copilot and alternatives? Any ideas?
Last updated: 2025-06-08

Post by tk096 on SMC_ReadNCFile2 is always busy ^{CODESYS Forge talk (Post)}
Hi, the subsequent interpreter should report an error? The reader is just reading the file without checking the syntax.
Last updated: 2025-06-17

Post by ranadheer on Add library .dll to project codesys. ^{CODESYS Forge talk (Post)}
As of my experience with Demo mode it is not possible to import the .dll file to the platform.
Last updated: 2025-10-15

Post by eschwellinger on Softmotion axis to CANopen Maxon IDX drive ^{CODESYS Forge talk (Post)}
I would try to use the EDS file of the maxon drive.
Last updated: 2024-01-06

Post by eschwellinger on Edge Gateway online, but PLC is not online ^{CODESYS Forge talk (Post)}
need the log file - or you write/send it in the CODESYS store my question
Last updated: 2024-01-10

Post by jeffersonhui on External file with relative path ^{CODESYS Forge talk (Post)}
I have the same question as well, anyone have any ideas? Thanks
Last updated: 2024-01-15

Post by saugat10 on Problem installing Multicore codesys control in raspberry pi 4 ^{CODESYS Forge talk (Post)}
I found the solution. I had to add the following line in /boot/config.txt file arm_64bit = 0
Last updated: 2024-02-07

Post by eschwellinger on File transfer via visu and codesys automation server ^{CODESYS Forge talk (Post)}
Hi, this will be possible with 1.33.0.0 release! Regards Edwin
Last updated: 2024-03-07

Post by eschwellinger on Raspberry PI4 Serial Port ^{CODESYS Forge talk (Post)}
no config file is ok, the feedback is: your hardware must support this send/receive switching
Last updated: 2024-03-19

Post by jglueck on Create a package with EDS file ^{CODESYS Forge talk (Post)}
I have the same question. I am starting to think no one uses CAN on PLCs anymore.
Last updated: 2024-04-16

Post by wollvieh on Launch a *.exe file from codesys ^{CODESYS Forge talk (Post)}
https://faq.codesys.com/plugins/servlet/mobile?contentId=106889218#content/view/106889218
Last updated: 2024-04-19

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