Translation - How to get text as reference in Frames translated? ^{CODESYS Forge talk (Thread)}
Translation - How to get text as reference in Frames translated?
Last updated: 2024-01-03

Set REFERENCE to 0 (null) when no longer used ^{CODESYS Forge talk (Thread)}
Set REFERENCE to 0 (null) when no longer used
Last updated: 2024-10-07

Find Function: Object reference not set to an instance of an object. ^{CODESYS Forge talk (Thread)}
Find Function: Object reference not set to an instance of an object.
Last updated: 2023-10-30

how to get a list of the cross reference of one variable ^{CODESYS Forge talk (Thread)}
how to get a list of the cross reference of one variable
Last updated: 2018-01-17

Error - object reference not set to an instance of a object ^{CODESYS Forge talk (Thread)}
Error - object reference not set to an instance of a object
Last updated: 2016-06-13

Error: Object reference not set to an instance of an object ^{CODESYS Forge talk (Thread)}
Error: Object reference not set to an instance of an object
Last updated: 2017-08-23

codesys "profiler" object reference not set to an instance of an object ^{CODESYS Forge talk (Thread)}
codesys "profiler" object reference not set to an instance of an object
Last updated: 2023-01-11

Cannot pass array of constant size to a function as a reference ^{CODESYS Forge talk (Thread)}
Cannot pass array of constant size to a function as a reference
Last updated: 2024-01-09

Post by rmaas on Direct Pointers in IOMapping for EtherCAT with IoDrvEthercatLib.ETCSlave_Dia ^{CODESYS Forge talk (Post)}
The reference used is the ethercat slave name. For example in this screenshot the reference would be: EL1809_1
Last updated: 2024-02-13

Internal error:System.NullReferenceException: The object reference was not set to an object instance. ^{CODESYS Forge talk (Thread)}
Internal error:System.NullReferenceException: The object reference was not set to an object instance.
Last updated: 2024-05-24

Internal error:System.NullReferenceException: The object reference was not set to an object instance. ^{CODESYS Forge talk (Thread)}
Internal error:System.NullReferenceException: The object reference was not set to an object instance.
Last updated: 2024-05-24

Post by janber on REFERENCE TO in an array ^{CODESYS Forge talk (Post)}
Hi all, in the online help it written, that array of reference to data type is not possible. Ok... but if I create array of struct of reference to - everything works fine - please see the screenshots: and it works this way OK. Is it intention or error in compiler 3.5.18.20 and we should avoid it? Thanks a lot, Jan.
Last updated: 2024-10-14

Post by fless on Release SP20 - Changes in behaviour? ^{CODESYS Forge talk (Post)}
use this to set an invalid reference Add_EVT_OUT REF= 0;
Last updated: 2024-03-24

Post by hambergg on Retain Variables on fRAM ^{CODESYS Forge talk (Post)}
Hi regarding NVRAM with SPI or I2C I expected reference too!
Last updated: 2024-09-03

Post by jtebokkel on Set REFERENCE to 0 (null) when no longer used ^{CODESYS Forge talk (Post)}
yes, it works
Last updated: 2024-10-07

Post by awatson on User Management (Configuration Dialog) ^{CODESYS Forge talk (Post)}
Hello I have just posted on a topic - about the reference for the element you have taken a screen shot for - "REFERENCE TO VisuUserMgmtProvider" https://forge.codesys.com/forge/talk/Visualization/thread/0591457fe4/ - do you know anything about it?
Last updated: 2023-11-17

Why do I get C0434: Function block AbstractFunctionBlock is ABSTRACT and cannot be instantiated for a Reference? ^{CODESYS Forge talk (Thread)}
Why do I get C0434: Function block AbstractFunctionBlock is ABSTRACT and cannot be instantiated for a Reference?
Last updated: 2022-08-14

Python Scripting: How to detect and handle "Object reference not set to an instance of an object" error ^{CODESYS Forge talk (Thread)}
Python Scripting: How to detect and handle "Object reference not set to an instance of an object" error
Last updated: 2023-08-16

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 struccc on Release SP20 - Changes in behaviour? ^{CODESYS Forge talk (Post)}
Dear all, I've just started to migrate some of my ancient projects to SP20. There is one strange error (?) I have noticed so far. In a method call, depending on the circumstances I would like to return reference to an object, or an invalid reference: METHOD Add_EVT_OUT : REFERENCE TO FB_MSG VAR END_VAR IF __ISVALIDREF(refMSG_Entry) THEN Add_EVT_OUT REF= MANAGER.AddMsg_EVT_OUT( refMSG_Entry, _Get_EVT_Message(MSG_EVENT.OUT), _Get_EVT_AddCode(MSG_EVENT.OUT) )^; ELSE Add_EVT_OUT := 0; END_IF So far setting a reference variable to 0, did this. But now, the expression Add_EVT_OUT := 0; gives an error: [ERROR] DB_WTP_370: Add_EVT_ACK MSG_TRIGGER_EXT: C0032: Cannot convert type 'BIT' to type 'REFERENCE TO FB_MSG' Naturally... I can write: Add_EVT_OUT := DWORD#0; But is this the correct way? Is there any constant I could use instead, like "NULL"? Or this is totally wrong and to be avoided?
Last updated: 2024-03-24

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 sunfloweeerrry on Edgelogix-rpi-1000-cm4102032 SPI port connection to PiFace I/O Driver in CodeSys. ^{CODESYS Forge talk (Post)}
Please anyone help there is not a lot reference about this.
Last updated: 2023-08-21

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 dkugler on Direct Pointers in IOMapping for EtherCAT with IoDrvEthercatLib.ETCSlave_Dia ^{CODESYS Forge talk (Post)}
rmaas: how do you get the reference of the slave?
Last updated: 2024-02-13

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