Post by alimans on OPC-UA Server, Symbol Set: Raise an error: Object reference not set to an instance of an object. ^{CODESYS Forge talk (Post)}
Hi everyone, I just created a very simple library without any code and, added it to my very simple project. after adding this library, I get an error when I try to open "Symbol Set" in "OPC UA Server" in "Communication Manager". Here is the code of my POU in the library: FUNCTION_BLOCK POU VAR eCommand : (CMD_NONE:=0, CMD_RESET:=-1) INT := CMD_NONE; END_VAR Attached is the error that I get. I also noticed that by removing the enumeration variable above (eCommand), I can open the "Symbol Set" again. Anybody has any idea why this error is raised and how could I use enumeration variables without error in "OPC UA Symbol Set"?
Last updated: 2024-08-08

Post by yannickasselin on codesys VLAN tagging ^{CODESYS Forge talk (Post)}
Hi, I am looking for exactly the same thing. I would think that using a layer 2/3 managed switch should work but I am not convinced. I would like to test it in order to see if it would be possible to run many Codesys Docker instances on a server and run only 1 ethernet cable from the server to a managed switch closer to the machines beeing controlled instead of having to run multiple long ethernet cables. I was going to buy a managed switch in order to test it but I want to first make sure it is possible and I want to figure out exactly what kind of switch I would need. Is this even possible? I think this is a feature that would be very useful paired with "Codesys Virtual Control SL". Thank you
Last updated: 2024-09-07

Post by matt-purcell on Which Lib to use, connect to a socket with URL instead of IP address ^{CODESYS Forge talk (Post)}
Hello, I have a new project and I need to connect to a TCP socket using the URL instead of an explicit IP address, myendpoint@mydomain.com Which library is best suited for this? This is for a new enterprise project, the endpoint is a server in a datacenter running some real time application. We have big IP, it will automatically reassign the IP address to the backup server if a crash occurs so an explicit IP won't work for me. I've done this in RS logix, working now to migrate that code over to codesys. Thanks in advance!
Last updated: 2024-06-17

Sorting array of any-sized structure ^{CODESYS Forge talk (Thread)}
Sorting array of any-sized structure
Last updated: 2023-08-18

Get the numer of day ^{CODESYS Forge talk (Thread)}
Get the numer of day
Last updated: 2023-09-14

Get Version of Installed Package ^{CODESYS Forge talk (Thread)}
Get Version of Installed Package
Last updated: 2019-03-08

Issues of Large Ethernet IP project ^{CODESYS Forge talk (Thread)}
Issues of Large Ethernet IP project
Last updated: 2022-02-01

Use of the CPLCHandlerCallback ^{CODESYS Forge talk (Thread)}
Use of the CPLCHandlerCallback
Last updated: 2012-02-06

Dinamic assignement of a variable ^{CODESYS Forge talk (Thread)}
Dinamic assignement of a variable
Last updated: 2016-06-28

Maintenance of the forum ^{CODESYS Forge talk (Thread)}
Maintenance of the forum
Last updated: 2010-07-09

Convert Array Of DINT To STRING ^{CODESYS Forge talk (Thread)}
Convert Array Of DINT To STRING
Last updated: 2023-12-03

Ambiguous use of name - CO136 ^{CODESYS Forge talk (Thread)}
Ambiguous use of name - CO136
Last updated: 2024-07-06

What is the insights of IoDrvEtherCAT.DCInSyncWindow? ^{CODESYS Forge talk (Thread)}
What is the insights of IoDrvEtherCAT.DCInSyncWindow?
Last updated: 2024-07-09

First IO address of a CAADiagDeviceDefault. ^{CODESYS Forge talk (Thread)}
First IO address of a CAADiagDeviceDefault.
Last updated: 2024-08-22

First IO address of a CAADiagDeviceDefault. ^{CODESYS Forge talk (Thread)}
First IO address of a CAADiagDeviceDefault.
Last updated: 2024-08-22

Question about the hairaichy of UaExpert ^{CODESYS Forge talk (Thread)}
Question about the hairaichy of UaExpert
Last updated: 2024-09-12

CAN Open Manager - varible of SYNC ^{CODESYS Forge talk (Thread)}
CAN Open Manager - varible of SYNC
Last updated: 2024-10-26

CAN Open Manager - varible of SYNC ^{CODESYS Forge talk (Thread)}
CAN Open Manager - varible of SYNC
Last updated: 2024-11-05

CODESYS 3.5 dicovery of PLC modules ^{CODESYS Forge talk (Thread)}
CODESYS 3.5 dicovery of PLC modules
Last updated: 2024-12-11

Name Validation of Visualization objects ^{CODESYS Forge talk (Thread)}
Name Validation of Visualization objects
Last updated: 2025-01-10

Download libraries of old versions ^{CODESYS Forge talk (Thread)}
Download libraries of old versions
Last updated: 2025-02-11

Something of strange in the trace ^{CODESYS Forge talk (Thread)}
Something of strange in the trace
Last updated: 2025-05-16

Something of strange in the trace ^{CODESYS Forge talk (Thread)}
Something of strange in the trace
Last updated: 2025-05-16

Max lines of code, codesys CNC ? ^{CODESYS Forge talk (Thread)}
Max lines of code, codesys CNC ?
Last updated: 2025-09-09

sysproces create out of V 3.5.20.5 ^{CODESYS Forge talk (Thread)}
sysproces create out of V 3.5.20.5
Last updated: 2025-09-16

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