Codesys ControlWinV3x64 with EtherCat Slave ^{CODESYS Forge talk (Thread)}
Codesys ControlWinV3x64 with EtherCat Slave
Last updated: 2026-08-28

Post by nixola on Exception handler return value purpose in _CODESYS 3.5 ^{CODESYS Forge talk (Post)}
Hi, I was trying to figure out how to correctly handle system exceptions in a CODESYS project, but either the documentation falls short, or I'm unable to find the proper docs. I know I can register a function as an exception handler via Task Configuration > System Events > Add Event Handler, which will create a function with the correct interface; I am, however, unable to figure out what the returned DWORD is supposed to be, if anything. Is the interface for the exception handler documented and, if so, where can I find it?
Last updated: 2026-08-31

Post by imdatatas on CFC editor: enable inline value entry on unconnected input pins (as in Ladder Logic editor) ^{CODESYS Forge talk (Post)}
In the CODESYS Ladder Logic editor, there's a really practical feature available while logged in (online) to the PLC: for an existing function block (e.g. TON or MC_MoveAbsolute), double-clicking on an unconnected input pin directly opens a value entry window right in the editor — with no need to assign any variable — and you can type a value directly. Likewise, if the input pin is of an ENUM or STRUCT type, it lets you pick a value of that type straight from a dropdown list. It also doesn't require assigning a variable or adding it to a watch list, etc. Unfortunately, in the CFC editor you can't write values directly to those unconnected input pins the way you can in Ladder — CFC only supports monitoring/display there. I wish this existing Ladder editor feature were also available in CFC — it would make the CFC editor far more usable. I think this would be a relatively small addition to the CFC editor, but it would make a real difference in daily commissioning and debugging work. It would be great to hear the development team's thoughts on whether this could be considered for a future release. Thanks in advance for reading!
Last updated: 2026-09-10

CFC editor: enable inline value entry on unconnected input pins (as in Ladder Logic editor) ^{CODESYS Forge talk (Thread)}
CFC editor: enable inline value entry on unconnected input pins (as in Ladder Logic editor)
Last updated: 2026-09-10

Post by tarek on How to add/Scan devicenet Master/Slave ^{CODESYS Forge talk (Post)}
Hello, i have a similar problem with this. Im using an EL6752 from Beckhoff DeviceNet Master and i dont have an EDS for the comms with the slave (EVO GT II Valve). In CODESYS they dont let me put a digital slave. My question, how can i add a slave in the EL6752 the Process data mapping to see values. I cant add a DeviceNet slave in the tree, thanks
Last updated: 2026-09-14

Systemwiederherstellung PFC200 (vielleicht auch bei anderen) ^{CODESYS Forge talk (Thread)}
Systemwiederherstellung PFC200 (vielleicht auch bei anderen)
Last updated: 2026-09-17

Enum mit Textliste ^{CODESYS Forge talk (Thread)}
Enum mit Textliste
Last updated: 2026-09-17

Read own network device name ^{CODESYS Forge talk (Thread)}
Read own network device name
Last updated: 2026-09-17

Post by reinier-geers on Read own network device name ^{CODESYS Forge talk (Post)}
Hi. When i scan for devices on the network i get names of the devices. Is there a command to get device name in my programm ? i found : DED.GetDeviceNameString( DED.GetRoot() ); but then i get his name in the programm. not his name in the network.
Last updated: 2026-09-17

Deutsch 🇩🇪 ^{CODESYS Forge talk (Discussion)}
German forum
Last updated: 6 days ago

Post by dmb-fan on Nach "Alles Bereinigen" viele unklare Fehler, aber nur in Schrittketten ^{CODESYS Forge talk (Post)}
Mit viele ausprobieren habe ich es einkreisen können: Es scheint NICHT mit einer Variablen Deklaration zusammenzuhängen. Wenn ich einen Parallel-Zweig lösche ist der Fehler für den betroffenen Baustein weg. Nur ein einzelne Step ohen Aktion reicht für den Fehler. Schritt löschen reicht nicht. Zweig löschen und Schritt neu mache: Fehler scheint weg zu sein.... Da ich das öfters und in größeren Bausteinen habe, möchte ich es vermeiden es händisch zu löschen und neu zu erstellen. (Speziell mit dem komischen Editor..) Ist das eine Compiler Fehler? Gibt es sowas wie ein "Datenbank bereinigen" / ReOrganisieren? Sonstige Tipps? PS: Ist die 64-Bit Version. PSS: Auf ersten Blick scheint es mit der 32 Bit Version zu klappen...??
Last updated: 6 days ago

Nach "Alles Bereinigen" viele unklare Fehler, aber nur in Schrittketten ^{CODESYS Forge talk (Thread)}
Nach "Alles Bereinigen" viele unklare Fehler, aber nur in Schrittketten
Last updated: 6 days ago

branch_copy(checkout=True) liefert ungültigen Projekt-Handle (0) in CODESYS V3.5 SP22 Patch 3 ^{CODESYS Forge talk (Thread)}
branch_copy(checkout=True) liefert ungültigen Projekt-Handle (0) in CODESYS V3.5 SP22 Patch 3
Last updated: 5 days ago

Post by gseidel on Test ^{CODESYS Forge talk (Post)}
Test topic
Last updated: 5 days ago

Post by boiwithproblems on branch_copy(checkout=True) liefert ungültigen Projekt-Handle (0) in CODESYS V3.5 SP22 Patch 3 ^{CODESYS Forge talk (Post)}
Since upgrading from V3.5 SP21 P3 to SP22 P3, this previously working scripted call fails: project, current_branch = project.git.branch_copy(current_branch,new_branch_name,checkout=True) Error: _3S.CoDeSys.Core.Objects.InvalidProjectHandleException Standard Error: The project handle 0 is invalid Workaround: When you do branch copy with checkout=False and then checkout the branch in a seperate line everything works. The issue seems to be that Codesys doesn't give back a proper handle when you do branch_copy with checkout=True. This is mainly so that issue gets noted and resolved in a further Patch and that people with the same issue might have an easier time debugging their scripts. With kind regards Matthias Rudigier
Last updated: 5 days ago

Post by jebu on OPC UA method calls ^{CODESYS Forge talk (Post)}
I'm setting up an OPC UA server in CODESYS. My understanding so far: Calling methods over OPC UA requires an Information Model — the plain Symbol Set / Symbol Configuration alone doesn't support method calls. Is that correct, or is there a way around it? With an Information Model, the Node IDs are auto-generated and I can't set them manually. Assuming that's right: -Are these generated Node IDs stable across builds/downloads, or can they change? -If they can change, what triggers it — renaming a variable/method, reordering objects in the model, a rebuild, a re-download to the PLC?
Last updated: 4 days ago

Legacy IFM CANopen I/O modules with CR710S / CODESYS 3.5 ^{CODESYS Forge talk (Thread)}
Legacy IFM CANopen I/O modules with CR710S / CODESYS 3.5
Last updated: 2 days ago

Post by mankh on Legacy IFM CANopen I/O modules with CR710S / CODESYS 3.5 ^{CODESYS Forge talk (Post)}
Hi, I am migrating an existing IFM system from CR0020 + CODESYS 2.3 to CR710S + CODESYS 3.5. The existing CANopen I/O modules are: CR9011 CR2042 CR2011 My questions are: Can these legacy IFM CANopen modules be used as slaves with the CR710S CANopen Master? Can their existing EDS files be imported directly into CODESYS 3.5? Are there any known compatibility issues with the old IFM EDS files, PDO mapping, or startup SDO configuration? Has anyone successfully used these modules with a CR710S? If so, could you share the recommended configuration procedure? The goal is to replace the CR0020 with a CR710S while keeping the existing CANopen I/O modules
Last updated: 2 days ago

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