Search talk: Object reference not set to an instance of an object

 
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Modbus TCP Master: how to set delay between request? CODESYS Forge talk (Thread)
Modbus TCP Master: how to set delay between request?
Last updated: 2019-11-22

ST editor Bookmarks - how to set with name automatically? CODESYS Forge talk (Thread)
ST editor Bookmarks - how to set with name automatically?
Last updated: 2021-06-09

I2C How to set repeated start condition? CODESYS Forge talk (Thread)
I2C How to set repeated start condition?
Last updated: 2017-04-15

Usb-toCan II ixxat how to set up comunication? CODESYS Forge talk (Thread)
Usb-toCan II ixxat how to set up comunication?
Last updated: 2013-06-05

Unable to set function code 0x780 for CANopen rxpdo5 CODESYS Forge talk (Thread)
Unable to set function code 0x780 for CANopen rxpdo5
Last updated: 2017-03-08

How to set IP Master Address inside ModbusTCP_Slave_Device CODESYS Forge talk (Thread)
How to set IP Master Address inside ModbusTCP_Slave_Device
Last updated: 2015-09-01

Scripting access rights to OPC Symbol Set? CODESYS Forge talk (Thread)
Scripting access rights to OPC Symbol Set?
Last updated: 2023-03-15

How To Set TCP_Client Buffer size? CODESYS Forge talk (Thread)
How To Set TCP_Client Buffer size?
Last updated: 2021-05-14

How to set values with a Test Manager Python script CODESYS Forge talk (Thread)
How to set values with a Test Manager Python script
Last updated: 2015-12-04

Post by smartcoco on Opaque NodeId in the OPC UA server CODESYS Forge talk (Post)
This seems to be because when creating 'OPC UA' with 'Communication Manager', the 'IdentifierType' of 'NodeId' cannot be configured as' String 'type. This issue is not an isolated case. For this issue, CODESYS seems to have not provided guidance to users on how to proceed. We can provide feedback on this issue in the 'My Question' section of the 'CODESYS Store' to make CODESYS take it seriously.
Last updated: 2025-01-10

how to make a const reference? CODESYS Forge talk (Thread)
how to make a const reference?
Last updated: 2018-02-08

Bitwise access to a visualization placeholder reference CODESYS Forge talk (Thread)
Bitwise access to a visualization placeholder reference
Last updated: 2011-10-12

HMI access to REFERENCE type variables CODESYS Forge talk (Thread)
HMI access to REFERENCE type variables
Last updated: 2020-12-19

Property that returns REFERENCE TO Interface type? CODESYS Forge talk (Thread)
Property that returns REFERENCE TO Interface type?
Last updated: 2021-11-23

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

Post by open on (no subject) CODESYS Forge talk (Post)
Hello, I want my button to be attached image ON_Good when variable true but however when i copied the visualization object into a new visualization screen it become attached image ON_Bad. Anyone know how to make it attached image ON_Good? Warmest regards,
Last updated: 2024-09-03

Post by micik on ERR_OK not recognized CODESYS Forge talk (Post)
Hello, if I try to use ERR_Ok in my code to check whether the file is open correctly or not, I get an error "Identifier ERR_OK not recognized", I can use plain 0 (zero) instead. But in general, is this a proper way to check for success of file operation since the 4th parameter is a poinmter to RTS_IEC_RESULT, and normally I would expect this to be used somehow. _hFile := SysFileOpen(_sFileName, am:=SysFile.ACCESS_MODE.AM_WRITE, ADR(_result)); IF _result <> 0 THEN udDiag := 100; RETURN;
Last updated: 2024-08-17

Post by lbouchard on CANOpen SIL2 error: UNSAFESTACK_NOT_OPERATIONAL CODESYS Forge talk (Post)
Hello, Working in 3.5 SP11 32 bit and using the 3S CANopenSafety Slave 3.5.11.0 library on an IFM CR711S. The 3SCSSD.CANOpenDevicesSIL2 function block keeps throwing "UNSAFESTACK_NOT_OPERATIONAL" Additionally, the Status of the device gives "There was an error accessing an I/O parameter". Any ideas on where my issues may lay? I have not found any good documentation that would explain the issue.
Last updated: 2025-05-23

Post by smic on put the Port number 80808 in Instance Setting of Deploy Control SL CODESYS Forge talk (Post)
I am using CODESYS V3.5 SP20 Patch 5. I am trying to use the Webvisu function on a PLC running on Docker. When I enter the port value 8080:8080 in the Instance Setting in Deploy Control SL, it is not saved. Can you please help me?
Last updated: 2025-02-21

Post by eschwellinger on Identifier 'IoDrvGPIO' not defined CODESYS Forge talk (Post)
it is just a precompiler error, login an start the application. Works.This will be fixed hopefully to next version.
Last updated: 2024-04-10

Post by gabrielarffa on Modbus TCP/IP having problems with global variables CODESYS Forge talk (Post)
I'm using Modbus TCP/IP to communicate Codesys with Elipse E3 as the master for a college project. I have made a list of global variables to organize the programming in two different POUs. The problem is, when I try to do the mapping of variables, the program informs me of an error due to the identifiers having a "." on their names. Do I have to reorganize my code to make it an unified block or is there a way to declare their names without changing all the code structure?
Last updated: 2025-05-20

Post by gabrielarffa on Modbus TCP/IP having problems with global variables CODESYS Forge talk (Post)
I'm using Modbus TCP/IP to communicate Codesys with Elipse E3 as the master for a college project. I have made a list of global variables to organize the programming in two different POUs. The problem is, when I try to do the mapping of variables, the program informs me of an error due to the identifiers having a "." on their names. Do I have to reorganize my code to make it an unified block or is there a way to declare their names without changing all the code structure?
Last updated: 2025-05-20

Post by olemart on Set REFERENCE to 0 (null) when no longer used CODESYS Forge talk (Post)
Did you find out if this work?
Last updated: 2024-10-02

Post by davep on Profinet RPC-call error CODESYS Forge talk (Post)
Solved! Go to Control Panel -> Windows Defender Firewall -> Allow an app or feature Enable the options to change settings. Scroll down the list of applications to CODESYS and CODESYS ControlService. If you do not see this application, add it to the list. Make sure all checkboxes are checked (Domain, Private, and Public).
Last updated: 2024-09-06

Post by felixm on Unable to select VisuDialogs.Numpad in Open Dialog input configuration CODESYS Forge talk (Post)
I'm trying to open the VisuDialogs.Numpad dialog to enter a new temperature setpoint on one of my VISU screens. For some reason, the numpad dialog does not appear as an option in the Open Dialog dropdown in my input configuration. I'm very new to CODESYS, so sorry if this is a simple fix/known item XD.
Last updated: 2025-07-10

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