Post by bschraud on Unerwünschte Username- und Passwortabfrage im Browserfenster
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Leider habe ich keine Lösung für das Problem gefunden. Glücklicherweise konnte ich die "CODESYS Control for Raspberry Pi MC SL" wieder auf dem 32bit OS zum Laufen bringen.
Last updated: 2024-05-06
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Post by mxj262 on FB having single input but initialized with Array
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GPIOs not running with Raspberry Pi 4 (and SPI connection)
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Post by tama00 on GPIOs not running with Raspberry Pi 4 (and SPI connection)
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Hello everyone, I have a working SPI connection (with transferExt) between a Raspberry master with Codesys and an ESP32 slave. I would also like to use a few GPIO pins. Is there a problem with using SPI AND GPIOs? Environment: Raspberry Pi 4+ with Raspian from Oct 23 Codesys V3.4 SP19 Patch 5 with Runtime Version 4.10.0.0 Device: GPIOs B+/Pi2 My problem: The status is displayed as “GPIOs : not running”. And also during mapping the message “The bus is not running. The values shown are perhaps not actual”. However, the variable changes that I make in my program are displayed under “Current Value”. In the Logic Analyzer, the pin toggles during transmission with small intervals of +-4us (seems to be a cyclical disorder, but I don't know where exactly it could be coming from). This applies to pins that I actually use (output) but also to the other GPIOs (not used). With GPIO 4, the line remains permanently high. Attached is a screenshot from the Logic Analyzer. Channel 1,3,5 were GPIO pin 26, 22, 17 Would be very grateful for help. Best regards
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Post by mxj262 on FB having single input but initialized with Array
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Ok yes now the loop has stopped when I set sum to zero before the for loop. Why will it retain the sum value from the last call?
Last updated: 2024-05-06
How to communicate 2 pcs that are using CODESYS
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Post by guilhermeleao on How to communicate 2 pcs that are using CODESYS
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I need to connect 2 computers on the same network that are running codesys, so that they can receive and change variable values from each other. This connection must preferably be made using Modbus.
Last updated: 2024-05-06
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Post by fless on FB having single input but initialized with Array
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Why will it retain the sum value from the last call? This is how PLC work. Usually variables only get initialized after a download or a reset (i.e. power loss). RETAIN variables are saved in a special kind of RAM and keep their value after a power loss. To initialize variables on every call of your FB use the VAR TEMP block. VAR_TEMP sum : INT; END_VAR
Last updated: 2024-05-07
FB having single input but initialized with Array
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