Post by alexgooi on Function Blocks and arrays of function blocks ^{CODESYS Forge talk (Post)}
Hi Jack, I think you have to look at a FB in a different way. A Function block (Class) can contain its own data. In other words don't define loose data in your GVL, but define a instance of a FB (Object) in your GVL: Example: Function_Block Basic_Class VAR_INPUT Open_Command: BOOL; END_VAR VAR_OUTPUT Opened: BOOL; END_VAR if Open_Command then Opened := TRUE; ELSE Opened := FALSE; END_IF Global Variables Objects: ARRAY[1..100] OF Basic_Class; //Here you ar defining you objects END_VAR In your code you can directly acces the data and couple it to the IO: GVL.Objects[1].Open_Command := %IX0.0; %QX0.0 := GVL.Objects[1].Opened; //To call the code itself use: GVL.Objects[1](); If you want to take this a step further you are also able to add methods and properties to the FB/Class end thereby creating a OOIP program
Last updated: 2024-02-15

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 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 wbj0t on What the right way to update TCP/COM slave device holding registers ^{CODESYS Forge talk (Post)}
Hi all :) I have an plc. This plc has option to be as slave device. There are TCP -> Serial Slave Device and COM -> Serial Slave Device. There are 4096 ModBus holding registers with mark "internal modify" for the both devices above. So, COM Slave has 4096 registers and TCP Slave has 4096 registers. And, finally, I have an ARRAY[0..4095] OF WORD. This array glued with COM Slave and TCP slave. Yes, I need plc's opportunity to be communication both TCP and COM ways for the same registers. For example, the next task structure: * TASK_0: 1. pou_READ_Registers 2. pou_0 3. pou_1 4. ... 5. pou_N 6. pou_WRITE_Registers At the first pou I read registers for the other pous, after job we have sort of state of the plc. At the last pou (6) we write modified registers. It is a good scenario: some one wrote registers for the job, after job we save these (modified) registers. But, what if registers wrote between 1 and 6 pou by operator, for example, at the 3 pou -> the last pou 'pou_WRITE' will rewrite this request from operator. What the right way to work with this logic? Thanks you.
Last updated: 2024-07-01

Ranges, Lambdas, on Fixed arrays of structs ^{CODESYS Forge talk (Thread)}
Ranges, Lambdas, on Fixed arrays of structs
Last updated: 2023-08-31

Save jitter measure of main task in file ^{CODESYS Forge talk (Thread)}
Save jitter measure of main task in file
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Ged rid of lines on Chart XY ^{CODESYS Forge talk (Thread)}
Ged rid of lines on Chart XY
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Resolution of visualization (for RPi's LCD 800x480) ^{CODESYS Forge talk (Thread)}
Resolution of visualization (for RPi's LCD 800x480)
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The configuration file of the PLC ^{CODESYS Forge talk (Thread)}
The configuration file of the PLC
Last updated: 2016-04-11

Where is data of ENIP getAttributeSingle stored? ^{CODESYS Forge talk (Thread)}
Where is data of ENIP getAttributeSingle stored?
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Encryption of application and communication not working ^{CODESYS Forge talk (Thread)}
Encryption of application and communication not working
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Adding a scaling factor to text sizes of different languages ^{CODESYS Forge talk (Thread)}
Adding a scaling factor to text sizes of different languages
Last updated: 2017-03-31

Variable number of arguments in a user-defined function ^{CODESYS Forge talk (Thread)}
Variable number of arguments in a user-defined function
Last updated: 2012-01-08

The intent of two Library Managers in a Project ^{CODESYS Forge talk (Thread)}
The intent of two Library Managers in a Project
Last updated: 2016-08-22

Initialization of visualization variables and cyclic code execution ^{CODESYS Forge talk (Thread)}
Initialization of visualization variables and cyclic code execution
Last updated: 2023-10-01

Access project information of references library by script ^{CODESYS Forge talk (Thread)}
Access project information of references library by script
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Axis variable indicating modulo of finite setting ^{CODESYS Forge talk (Thread)}
Axis variable indicating modulo of finite setting
Last updated: 2023-11-25

License status of Linux 64Bit runtime via CLI ^{CODESYS Forge talk (Thread)}
License status of Linux 64Bit runtime via CLI
Last updated: 2023-12-04

Management of a PLC network from a remote station ^{CODESYS Forge talk (Thread)}
Management of a PLC network from a remote station
Last updated: 2023-12-04

Extracting information out of a *.library or *.compiled-library file ^{CODESYS Forge talk (Thread)}
Extracting information out of a .library or .compiled-library file
Last updated: 2023-12-04

Alarm Management - Import and Export of AlarmGroup ^{CODESYS Forge talk (Thread)}
Alarm Management - Import and Export of AlarmGroup
Last updated: 2023-12-06

OPC UA RPI 4.8.0.0 Status Code / "out of range" ^{CODESYS Forge talk (Thread)}
OPC UA RPI 4.8.0.0 Status Code / "out of range"
Last updated: 2024-07-10

Number of Connections to Modbus TCP Slave ^{CODESYS Forge talk (Thread)}
Number of Connections to Modbus TCP Slave
Last updated: 2024-08-01

Number of Connections to Modbus TCP Slave ^{CODESYS Forge talk (Thread)}
Number of Connections to Modbus TCP Slave
Last updated: 2024-08-01

Number of Connections to Modbus TCP Slave ^{CODESYS Forge talk (Thread)}
Number of Connections to Modbus TCP Slave
Last updated: 2024-08-01

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