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

 
<< < 1 .. 6 7 8 9 10 .. 286 > >> (Page 8 of 286)

Help to make an axis control CODESYS Forge talk (Thread)
Help to make an axis control
Last updated: 2010-12-06

Is possible to transform a .sqlite file generated by a Trend Recording object to a .csv file? CODESYS Forge talk (Thread)
Is possible to transform a .sqlite file generated by a Trend Recording object to a .csv file?
Last updated: 2017-12-22

Post by dogulas on OPC UA C# client connecting to OPC UA CODESYS server CODESYS Forge talk (Post)
Ok, I have a simple test environment. From C#, using OPC UA, I can read DINTs, write DINTs, read Structs, but when I try to write a struct I get BadNotWritable. I am using Communication Manager, OPC UA Server, and IEC Symbol Publishing. I have a struct defined with one single DINT in it. The instance of the struct is in GVL. The struct is marked read/write in IEC Symbol Publishing. Any ideas? Pointers are welcome. public static async Task WriteStructA(byte[] structAData) { if (_session == null) throw new Exception("session is null"); // create a RequestHeader RequestHeader requestHeader = new RequestHeader { Timestamp = DateTime.UtcNow, TimeoutHint = 30000 // timeout in milliseconds }; // create an ExtensionObject to wrap the value to be written ExtensionObject extensionObject = new ExtensionObject( new ExpandedNodeId("GVL_StructA", 5), structAData ); // create a WriteValue object to hold the value to be written WriteValue writeValue = new WriteValue { NodeId = _structANodeId, AttributeId = Attributes.Value, Value = new DataValue(extensionObject) }; // put the WriteValue object into a WriteValueCollection object WriteValueCollection writeValueCollection = new WriteValueCollection() { writeValue }; // perform the write operation asynchronously WriteResponse writeResponse = await _session.WriteAsync( requestHeader, writeValueCollection, CancellationToken.None ); // check the result of the write operation if (writeResponse.Results[0] != StatusCodes.Good) throw new Exception("Write failed: " + writeResponse.Results[0]); }
Last updated: 2024-12-17

Post by smartcoco on Dynamic object release issues CODESYS Forge talk (Post)
It seems that there is no solution to this problem.
Last updated: 2024-03-04

how to set time zone of Beijing China CODESYS Forge talk (Thread)
how to set time zone of Beijing China
Last updated: 2012-11-10

Post by schnepper on Minor UI bug: cannot create SFC POU after creating a Function POU CODESYS Forge talk (Post)
After creating a Function POU, it is not possible to then create an SFC POU. Steps to recreate: * Create a new Function POU. SFC is not allowed for Functions, so SFC does not show in the Implementation language dropdown. * Click Add Object -> POU... Function is selected for Type. * Select Program * SFC is not present in the Implementation language dropdown
Last updated: 2024-05-23

adding PG (Paramter Group) under CAN-J1939 and adding Information object under IEC60870 protocol CODESYS Forge talk (Thread)
adding PG (Paramter Group) under CAN-J1939 and adding Information object under IEC60870 protocol
Last updated: 2017-06-13

Post by avenue68 on REFERENCE TO in an array CODESYS Forge talk (Post)
That's because the array only contains structures themselves, not references. It doesn't matter that what consists of each struectures unless they are not pointers.
Last updated: 2025-05-21

Post by simond on The required device description is not installed.. CODESYS Forge talk (Post)
Hi folks, can someone please tell me how to go about fixing this issue? I am getting this error when I implement an instance of the J1939_Manager. Thanks Simon
Last updated: 2023-10-03

Use an operator keyword as part of an Enum, e.g. 'MOVE' CODESYS Forge talk (Thread)
Use an operator keyword as part of an Enum, e.g. 'MOVE'
Last updated: 2022-07-14

Post by yigitcant on Configuring a CIP object for Explicit Message CODESYS Forge talk (Post)
Hello sir, Δ± am new player in codesys env. I wonder that how to communicate with Fanuc robot and Codesys, Δ± wanna use explicit message EIP but Δ± don't find an usefull manual in codesys env. Pls share me your project I can not find CIP protocol
Last updated: 2025-10-22

Post by timvh on Array of Program CODESYS Forge talk (Post)
You cannot create an array of Programs. Create a Function Block for this purpose instead of a program. You can create an array of FB instances and call each instance in a loop.
Last updated: 2024-09-03

Post by renezw on Access to a running Codesys instance via Python CODESYS Forge talk (Post)
I have a Codesys environment running and would like to inject code into the running environment at the same time using a code generator with Python via the console. So far I can only start a new Codesys instance with Python, but not access an already running one. How can I access the running Codesys instance?
Last updated: 2024-09-03

Post by narius on OPC-UA object instances preexisting in imported xml information model CODESYS Forge talk (Post)
Hi all, is it possible to use object instances that are not instantiated by codesys itself, e.g. have been defined in UA-Modeler ? When I browse the plc with UA-Expert I see those instances, but I have not seen information in codesys or the web if these are writable in codesys. So far, I am under the impression, that it is not possible, but would like to hear from others. Also, is it correct, that it is not possible to create references inside codesys ? Thanks in advance and kr
Last updated: 2024-08-08

Post by alessandro on Configuring a CIP object for Explicit Message CODESYS Forge talk (Post)
We used this with shared memory codesys. and work. OpENer is an EtherNet/IPβ„’ stack for I/O adapter devices; supports multiple I/O and explicit connections. And we adapt this also for Implicit message. But for arrive to the end we spend a lot of time. :-(((
Last updated: 2025-10-24

How to add an own device to the bus-master? CODESYS Forge talk (Thread)
How to add an own device to the bus-master?
Last updated: 2016-04-13

How to add startup parameters to an EtherCAT slave CODESYS Forge talk (Thread)
How to add startup parameters to an EtherCAT slave
Last updated: 2015-09-15

Post by askic on Name Validation of Visualization objects CODESYS Forge talk (Post)
Hello, In my projects, I'm following this recommendation about the rule names in Codesys https://content.helpme-codesys.com/en/CODESYS%20Development%20System/_cds_rules.html, so I always use backtick identifiers, not only for variables, but also for the object names. However, I have noticed that in the current version of Codesys, when adding Visu object, it is not allowed to used these identifiers in the name. This is very different from all other objects like, folder names, POU names, Variable list names etc. I wonder if there is some hidden settings I can use to enable backtick identifiers in the Visu object names? Attached is a screenshot with the details. Thank you!
Last updated: 2025-01-10

Post by climblinne on Calling OPC UA Methods from UaExpert CODESYS Forge talk (Post)
Hello, I hope someone could help me. I installed the newest Codesys 3.5 SP 20 Patch 1. When loading the demo files from @i-campbell I can upgrade them to the latest version and everthing works on the OPC-UA client side as expected (object "a" is visible, I can use the "ExampleMethod"). Now I * remove the "Information Model", * delete the "OPC_UA_Symbols Objects", * Add "Information Model" again * add "TestRootObjectType" again and "Generate IEC declarations" * and search for mapped instances (to get instance "a" again) Very good still working as expected. Now I delete the OPC_UA_Symbols and add it again referring to the "objecttest" from 16.9.2020. Also I redo the steps from above. The result is now, that I can't see the "a" object in the "Root/Objects" folder. Why ist this and how can I make it running? I think, it could may be a different version of the UA configuration file. I tried to build my own model definition files and got the same problem (but I am really not an expert). When someone has a actual model, which is also running in the actual Codesys I would be very grateful. Or even better, how to make the correct model in e.g. UA Modeler SW (I followed the description https://documentation.unified-automation.com/uamodeler/1.6.0/html/howprojnet_sec.html).
Last updated: 2024-07-01

changing the type of an existing POU from FB to PRG CODESYS Forge talk (Thread)
changing the type of an existing POU from FB to PRG
Last updated: 2012-12-14

Post by andrebrandt on BACnet dynamic create bacnet object CODESYS Forge talk (Post)
Hi. I want to create a FB with bacnet objects. FUNCTION_BLOCK PT1000 VAR_INPUT System: STRING; In: REAL; Name:STRING; END_VAR VAR_OUTPUT Out: REAL; Out_St: Struct_PT1000; END_VAR VAR {attribute 'instance-path'} {attribute 'noinit'} Tag: STRING; Instance:DINT; //AnalogInn : WagoSysBACnet.FbAnalogInput_large(1); This works. Objectname is AnalogInn. identifier is 1 END_VAR I want to name object based on FB PT1000. In FB P1000, I want to write eUnits, Name and so on. How can i do this???
Last updated: 2025-01-15

Post by mtho on JSON Utilities - JSON file written with invalid structure CODESYS Forge talk (Post)
I'm using the JSON Utilities SL library to write configurations in my program to a file. I'm generating the JSON data using the builder function block and all appears to work correctly. When I write the jsondata to file, I'm finding that some of the JSON elements are not being written in the right location in the file. Rather than writing they keys under the parent object, they get written outside the root JSON object at the end of the file. If I then try to read the file back into the program, I get an invalid_structure error. I don't get any errors when populating the JSON data or when writing the file. I attached an example of the JSON writer output. The problems begin with key P200. Each P200 should go under MBR1 through MBR3. Among the rest of the keys, they are supposed to be under different parent objects. I am using default values for wsLineBreak and encoding.
Last updated: 2024-03-06

REFERENCE TO CODESYS Forge talk (Thread)
REFERENCE TO
Last updated: 2021-11-02

Post by rushikeshsonone on Get the list of all languages from TextList or from font settings of visualmanager CODESYS Forge talk (Post)
Hi, I want list of all languages added in text list during runtime. I check with various object call but no luck. Can you help me with that? Note - I can not using Textlistutil, need other solution
Last updated: 2025-03-04

Post by atone on Set DeviceID of an IO-Link Sensor at Runtime CODESYS Forge talk (Post)
I need to be able to change (set) the DeviceID of an IO-Link sensor (see DeviceID.png) at runtime. I tried with both ProfinetCommon.PN_PortConfiguration and ProfinetCommon.IOL_PortConfiguration, but I get an error for both when I try to read the port configuration (see PN_PortConfiguration.png). Does one of those FBs is the right one for my purpose? Do I possibly make a mistake when assigning the parameter IOLD_ID/IOLM_ID?
Last updated: 2025-03-19

<< < 1 .. 6 7 8 9 10 .. 286 > >> (Page 8 of 286)

Showing results of 7143

Sort by relevance or date