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Post by nulltrace on How change Unity-ID in TCP Modbus Slave
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Hey Husarz, thanks for your Message, now i understand your Problem, also able to reproduce that. Pls. give me a Short Time to Check some stuff on this, i'll come back to this Topic with news ASAP. Greetings
Last updated: 2026-04-03
Post by mait-tim on Unknown Type
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Hello, Im working with EPEC PLC's and working on the HMI and i'm running into the following errors: Unknown Type ISOImages.TargetContainer.TDS (and similars) I cannot locate the error and the source position is the visutalisation manager where i cannot find anything related to this type. Im working with: Codesys V3.5 SP18 patch 3 and i cannot update since the hardware does not allow for newer SP versions
Last updated: 2026-04-03
Post by nulltrace on Discussion for Home page
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A Small Plugin for Projecthandling, is there any interesting in Community to have a plugin such this? This Plugin is able to hold Projects, Librarys, Devdescriptions, Changelogs and Versioning on an Multi-User-Server (Fileserver). Its NOT a GIT-System. Its more comparable to the Siemens BOS-Server, but with Versioning and ability to go back to an older Project-Version. The Idea behind this tool is a Program-Database, Changelog and ability to see, which Coworker use´s these Project actual. Just give me some Feedback. Thx
Last updated: 2026-04-04
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Post by reinier-geers on API webclient
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Fur ein jahr ein webclient lisence gekauft. Aber immer funktioniert es noch nich. Mach ik es auf internet bekomme ich daten. Aber mit codesys bekomme ich - Query fehler ... - ein switch die abschalt - oder den controller hangt mal wieder Hat eine dar erfahrung? Kan ich in den FB sehen was da pasiert ?
Last updated: 2026-04-05
Post by nicolasquintin on Codesys Installation Always Freeze when the installing is almost done
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Indeed that worked, thanks!
Last updated: 2026-04-05
Codesys Installation Always Freeze when the installing is almost done
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Codesys Installation Always Freeze when the installing is almost done
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Post by reinier-geers on Virtual Api to vieuw what im sending
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Hi. Is there a website to test my webclient ? When i do a web api test on internet it works. But with codesys ill get an error. So is there a website to tests what im sending ? or a way to look in to the Codeys FB Webclient ?
Last updated: 2026-04-05
Post by reinier-geers on Virtual Api to vieuw what im sending
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Hi. Is there a website to test my webclient ? When i do a web api test on internet it works. But with codesys ill get an error. So is there a website to tests what im sending ? or a way to look in to the Codeys FB Webclient ?
Last updated: 2026-04-05
Virtual Api to vieuw what im sending
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Virtual Api to vieuw what im sending
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Post by egr99 on Modbus TCP Server connection is ESTABLISHED but all holding registers are value 0?
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Hi there, Read the above description and experienced the same: Reading coil/discrete input/input register/holding register doesn't fill the mapped I/O variable. Any suggestions? Defined (see attachment): - Ethernet (with parameters according to the used Ethernet adapter of my Windows 11 laptop) - -Modbus TCP Client - - -LOGO231 as Modbus TCP Server - - -WS242 as Modbus TCP Server (WaveShare Modbus TCP <-> RTU converter) - - - -WS242_01 as Modbus Server, COM port (slave-id 1 RTU) - - - -WS242_03 idem (slave-id 3 RTU) - - - -WS242_11 idem (slave-id 11 RTU) Writing coil/holding register works from a mapped I/O variable works fine. Verification of Modbus traffic with WireShark: QUERY to and the RESPONSE of all slave-ids are correct Status of all defined is CONNECTED, RESPONSE_SUCCESS, RUNNING etc. Request counters increase with expected frequency. Error counter = 0. (To have all counters works fine I had to change Modbus TCP Client's parameter OptimizationON to FALSE). LOGO231 works fine: values in mapped I/O conform expectation WS242 without Modbus Server, COM port and with defined channels (for only 1 slave-id possible) works fine. PLC Settings: Update I/O while in stop: I see xBusy changing from FALSE to TRUE and vice versa. Always update variables: Enabled 1
Last updated: 2026-04-05
Post by darwin03 on Mismatch between coordinate monitor and actual motion using SMC_GroupJog2, MC_MoveLinearAbsolute (6DOF)
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Hi Guys!!! I am experiencing an issue when trying to move 6DOF using SMC_GroupJog2 and MC_MoveLinearAbsolute, but I don't understand why, when I jog only X or Y, the coordinate I monitor just changes the X or Y value. It's true, but in reality, Joint6 is still running like the video. Am I wrong somewhere? Many thanks for considering my request.! Video: https://drive.google.com/drive/folders/1vRHQ3AtTO3mijptqZgn5OcP9pyi527Jm?usp=sharing
Last updated: 2026-04-06
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Post by egr99 on Modbus TCP Server connection is ESTABLISHED but all holding registers are value 0?
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You're absolutely right. Sorry for that. In the meantime I wrote a Function block to handle the reads and writes to the different attached RTU-devices. It processes the parameter like (str_Modbus:=(usiSlave:=1, uiFC:=5, uiLEN:=1, uiOFFSET:=0, uiInterval:=500)) and the corresponding output, waits for the response and processes next request in a 5-state procedure. It's working for 2 gateways (stable without errors, although error recovery is included). But nevertheless it should be possible with the Channel definitions of Codesys. Much easier to maintain :)
Last updated: 2026-04-08
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