Post by paulorb on STRUCT AT %MW1000 ^{CODESYS Forge talk (Post)}
Hi I am trying to use STRUCT to parse commands from Modbus/TCP, Modbus client will fill the bytes related to a specific command (type, parameters), then PLC (Codesys) will access the command parameters. A STRUCT will simplify a lot the process of parsing the data, so I don't need to parse byte per byte, address will be mapped to a struct and I can use it for parsing the data. From what I understood, the compiler does not allow me to specify the location of the struct for a %MW register. VAR_COMMAND AT %MW1002: structGenericModbusCommand; This will throw: Bad declaration, use '%ML' for 'structGenericModbusCommand' variable But If I change it to %ML, when you go online you see that it is actually allocating the struct in another memory address. When we go online, on GVL we can see: VAR_COMMAND. structGenericModbusCommand %ML1002 commandType COMMANDTYPE %MB8016 ... %MB8020 I am not specifying a pointer or a reference it is a struct type, why is it mapping to a %MW location (random one). How can I control where it is mapping to? I need a consistent way to map STRUCT to specific modbus address. Is it possible? Thanks, Paulo Note I am using a Codesys OEM: Schneider Machine Expert Logic Builder (M241)
Last updated: 2024-08-13

Speed Reference & Encoder Feedback for an Older VFD ^{CODESYS Forge talk (Thread)}
Speed Reference & Encoder Feedback for an Older VFD
Last updated: 2017-03-01

[FATAL ERROR] Unresolved reference: 'USERMGRUSERGETPROPERTY' on Codesys 3.5 SP19 ^{CODESYS Forge talk (Thread)}
[FATAL ERROR] Unresolved reference: 'USERMGRUSERGETPROPERTY' on Codesys 3.5 SP19
Last updated: 2023-04-02

Missing documentation "API Reference Documentation for the ScriptEngine" ^{CODESYS Forge talk (Thread)}
Missing documentation "API Reference Documentation for the ScriptEngine"
Last updated: 2018-01-26

SoftPLC with Windows Control RTE - Unresolved reference(s) ^{CODESYS Forge talk (Thread)}
SoftPLC with Windows Control RTE - Unresolved reference(s)
Last updated: 2020-05-26

OOP: Change visualization and reference at runtime in program ST ^{CODESYS Forge talk (Thread)}
OOP: Change visualization and reference at runtime in program ST
Last updated: 2023-05-31

Why aren't FunctionBlocks passed by reference by default? ^{CODESYS Forge talk (Thread)}
Why aren't FunctionBlocks passed by reference by default?
Last updated: 2022-07-15

Pointer and reference behavour during online change ^{CODESYS Forge talk (Thread)}
Pointer and reference behavour during online change
Last updated: 2017-08-16

Properties that return Reference Types. What are the various Behaviors? ^{CODESYS Forge talk (Thread)}
Properties that return Reference Types. What are the various Behaviors?
Last updated: 2021-11-17

Problem with exporting symbols of reference variables ^{CODESYS Forge talk (Thread)}
Problem with exporting symbols of reference variables
Last updated: 2017-04-03

Python : API Reference Documentation for the ScriptEngine...where is now? ^{CODESYS Forge talk (Thread)}
Python : API Reference Documentation for the ScriptEngine...where is now?
Last updated: 2021-06-21

unresolved reference: IOMGRLOCKENTER IOMGRLOCKLEAVE at download (from virtual machine) ^{CODESYS Forge talk (Thread)}
unresolved reference: IOMGRLOCKENTER IOMGRLOCKLEAVE at download (from virtual machine)
Last updated: 2020-04-14

[FATAL ERROR] Unresolved reference: 'USERMGRUSERGETPROPERTY' on Codesys 3.5 SP19 ^{CODESYS Forge talk (Thread)}
[FATAL ERROR] Unresolved reference: 'USERMGRUSERGETPROPERTY' on Codesys 3.5 SP19
Last updated: 2023-03-11

Reference: Fehler in der Hilfe? ("Method Invocation") ^{CODESYS Forge talk (Thread)}
Reference: Fehler in der Hilfe? ("Method Invocation")
Last updated: 2011-09-07

Post by jegerjon on Same program to more than one PLC ^{CODESYS Forge talk (Post)}
I guess you could archive the project, open the archive and go online. Is that suffiecient for your use case?
Last updated: 2023-08-25

Post by kims2024 on Timer change online ^{CODESYS Forge talk (Post)}
with codesys v2.3, I want to extend a timer value online. I have tried the value does not go !
Last updated: 2024-08-24

Post by apurv on Cannot pass array of constant size to a function as a reference ^{CODESYS Forge talk (Post)}
I have a Array of constant size defined like this Var Constant MAX_SIZE :UINT := 10; End_var VAR array : ARRAY[0..MAX_SIZE] OF INT; END_VAR Now I want to pass this array to a function by reference, Function fun : INT VAR_IN_OUT CONSTANT MAX_SIZE : UINT; END_VAR VAR_INPUT array : REFERENCE TO ARRAY[0..MAX_SIZE] OF INT; END_VAR but when I run this it gives strange Errors Error : Cannot Convert type 'ARRAY [0..MAX_SIZE] OF INT' to type 'ARRAY[0..MAX_SIZE] OF INT'
Last updated: 2024-01-07

Post by simotion on Property ^{CODESYS Forge talk (Post)}
Why can't a property be of type REFERENCE TO? Plc goes to stop if I try that.
Last updated: 2023-12-14

Post by apurv on Cannot pass array of constant size to a function as a reference ^{CODESYS Forge talk (Post)}
okay but will this pass the array by copying it or it will be a reference to original array only.
Last updated: 2024-01-09

OPC-UA Server, Symbol Set: Raise an error: Object reference not set to an instance of an object. ^{CODESYS Forge talk (Thread)}
OPC-UA Server, Symbol Set: Raise an error: Object reference not set to an instance of an object.
Last updated: 2024-08-08

Post by talhaali on Is a Reset possible for the CoDeSys soft PLC? ^{CODESYS Forge talk (Post)}
Hi, I have got a solution. Go to local disk C. (There will be an option View on top. Click View>Show>hidden items.) go to following path:C:\ProgramData\CODESYS\CODESYSControlWinV3x64 there will be one or two files. delete it and run control win again. issue will be resolved.
Last updated: 2024-01-18

Post by timvh on Missing Font ^{CODESYS Forge talk (Post)}
Not sure, but maybe it related to the style. Go to the Visualization Manager in your project and see if a style is selected, or choose another style to see if this helps.
Last updated: 2024-02-28

Post by eschwellinger on How to Connect / Go Online without re-downloading the project ^{CODESYS Forge talk (Post)}
Which plc type is it: Either use Automationserver to do this or save the project archives instead of projects or use the source dowload function and reopen the application from plc. So you need to chose one of them.
Last updated: 2024-04-13

Post by pasillalej on No gateway with the given settings could be found ^{CODESYS Forge talk (Post)}
Go to Online>Communication Parameters...>Gateway>TCP/IP> Click on "New..." and reestablish your connections with whatever IP address and set up information you have. Bypass whatever is necessary as you may have to redownload to the PLC.
Last updated: 2024-05-09

Post by ibarragerman on PLCHandler where is it ^{CODESYS Forge talk (Post)}
Hello, someone has some example to use PLC Handler? Without SDK. I would like to make some test before to go forward buying SDKs.
Last updated: 2024-07-26

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