Post by astutoski on MCP23017: inputs OK, but outputs won’t switch (CODESYS on Raspberry Pi)
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Hi everyone, I’ve connected and configured an MCP23017 over I²C on a Raspberry Pi using the available CODESYS/RPi library. Input reading works fine (I can reliably read a digital input). However, I can’t get any output pin to change state. Example: when I try to drive PB0, the watch shows MCP23017.Out_B.0 = TRUE (1), but there is no actual output on the pin (no voltage change). Anyone solved this?
Last updated: 2025-09-17
MCP23017: inputs OK, but outputs won’t switch (CODESYS on Raspberry Pi)
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MCP23017: inputs OK, but outputs won’t switch (CODESYS on Raspberry Pi)
Last updated: 2025-09-17
Post by kurtk on How to change keyboard layout on the virtual keyboard?
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I have never seen a codesys keyboard with anything other than the german layout I'm hoping to find a US Keypad layout so as not to do all the surgery to co-erce a german Layout into English duty
Last updated: 2025-09-17
Post by kurtk on How to change keyboard layout on the virtual keyboard?
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I have never seen a codesys keyboard with anything other than the german layout I'm hoping to find a US Keypad layout so as not to do all the surgery to co-erce a german Layout into English duty
Last updated: 2025-09-17
Post by kurtk on How to change keyboard layout on the virtual keyboard?
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which "demo templates" did you use and from whence did you obtain them ? I don't see anything like that in the above library
Last updated: 2025-09-17
Post by totorovic on Project loses 'Download time' information
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Hello, Today I have the problem again. The code in my IDE is the same as the code in the runtime but I cannot Log in to the PLC without download. Juste because the Download information is 'None'. And I don"t know how is managed this information bu Codesys. I'M WAITING SINCE 17 MONTHS, CAN I PLEASE HAVE A ANSWER FROM CODESYS?
Last updated: 2025-09-18
Post by dkugler on Project loses 'Download time' information
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and if you copy or transfer a project to another place, copy not only the .project, copy .compileinfo .bootinfo and .bootinfo_guids then we figured out it is more often possible to go online without full download. If you build an archiv and extract it, some of this files are missing and login isn't possible without download. I work with V3.5 SP16 Patch 4. I don't know if this problem of the archiv is solved in newer Versions/SP's and I don't know what the problem of Codesys is to help out a lot of programers of this very annoying problem or at least help with a workaround
Last updated: 2025-09-18
Post by timvh on How to change keyboard layout on the virtual keyboard?
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Maybe you have the "Devices" tab open(?), but the "templates" are in the POU pool. You can open it from the menu: View - POUs, or if it is already open, select the POUs tab which is normally next to the Devices tab. All objects which are part of a library are in the POU pool, because they should be device independent (at least most of them).
Last updated: 2025-09-18
Post by liai on can not new a cam table in codesys V3.5 SP20
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I am using a new project, with nothing, but when add a simple cam table, and compile, there will be errors. It seems some add-on or library was missing, but there is not any hint. Could you help, please.
Last updated: 2025-09-18
How to change keyboard layout on the virtual keyboard?
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How to change keyboard layout on the virtual keyboard?
Last updated: 2025-09-18
Post by dkugler on Project loses 'Download time' information
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if this happens I go to --> Build --> Generate code then there exists a IDE Code and a PLC/API code and comparison before download is possible. Give it a try?
Last updated: 2025-09-18
Post by chris--o on ModbusTCP RaspberryPi zu Fronius Wechselrichter
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Danke probier ich mal aus! Sorry für die späte Antwort.. War im Urlaub und hatte den Post hier wieder verdrängt.
Last updated: 2025-09-19
ModbusTCP RaspberryPi zu Fronius Wechselrichter
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ModbusTCP RaspberryPi zu Fronius Wechselrichter
Last updated: 2025-09-19
Post by gseidel on can not new a cam table in codesys V3.5 SP20
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Hi liai, is it possible, that SM3_Basic is missing in the library manager? (It should be inserted automatically when adding a Cam table, along with the other motion libs.) You can add it manually and see if that solves the compile errors. Best regards, Georg
Last updated: 2025-09-19
Draw Commands
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Draw Commands
Last updated: 2025-09-19
download project via codesys is slow but tftp/ftp/iperf is fast ??
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download project via codesys is slow but tftp/ftp/iperf is fast ??
Last updated: 2025-09-20
Post by flyingsheep on download project via codesys is slow but tftp/ftp/iperf is fast ??
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Setup description CODESYS is running on an embedded RTOS. For testing, I use a local debugging environment where my PC is connected directly to the embedded SoC via an Ethernet cable (no switch or router in between).
Last updated: 2025-09-20
Post by flyingsheep on download project via codesys is slow but tftp/ftp/iperf is fast ??
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CODESYS is running on an embedded RTOS. For testing, I use a local debugging environment where my PC is connected directly to the embedded SoC via an Ethernet cable (no switch or router in between).
Last updated: 2025-09-20
Post by gaglios on Raspberry Pi 5 GPIO not working.
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Is there anything new? On the licensing page it says that Raspberry Pi 5 GPIOs are not yet supported.
Last updated: 2025-09-20
Raspberry Pi 5 GPIO not working.
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Raspberry Pi 5 GPIO not working.
Last updated: 2025-09-20
download project via codesys is slow but tftp/ftp/iperf is fast ??
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download project via codesys is slow but tftp/ftp/iperf is fast ??
Last updated: 2025-09-20
Persistent Vars
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Persistent Vars
Last updated: 2025-09-22
Post by durallymax on Persistent Vars
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Looking for a better way to manage Persistent Variables. We tend to have local vars in our FBs that need persistence through downloads as the systems are updated/altered on a regular basis. Retain would suffice if we had an easy mechanism to backup and restore like we can with Persistent variables and recipes. Although not having to remember that step with Persistent variables is preferred. We're running into issues with persistent storage capacity (WAGO PFC200) using the Persistent variable list (and adding all instances). It appears there are many ways to handle this, some with recipes, some with files, others with application manager. Is there a solution that exists that is as simple as declaring as Persistent and managing elsewhere? Or do we need to move onto periodically writing CSVs?
Last updated: 2025-09-22
Post by liai on can not new a cam table in codesys V3.5 SP20
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Hi gseidel, Thanks a lot. My softmotion is 4.18,so the SM3_Basic version is 4.18 by default. When I change the version of SM3_Basic to 4.17,complie works good then. Thank you for your kindness.
Last updated: 2025-09-22
CAnopen stack
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CAnopen stack
Last updated: 2025-09-22
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