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Translating a Python program into CODESYS

Fab
2015-05-04
2015-05-20
  • Fab - 2015-05-04

    Does somebody have an idea of how to translate the Python program deposited in the appendix into CODESYS?
    It is a program that makes it possible to read temperature and humidity with a HiH6130 Sensor connected to the MCP3421 18bit ADC

    IMG: MCP3421 with Temperature Humidity Sensor HiH6130.png

     
  • Fab - 2015-05-05

    just a quick hint or something would be sweet

     
  • Fab - 2015-05-06

    Hey guys,
    so.. I started up with this but im always getting "???" where at len.
    Does somebody know what i am doing wrong?
    The Python program works perfectly

    I'm just having some problems with the communication. I only need help with that. So that i can access the MCP3421
    It seems like the "Timer.Q" doesnt trigger and i don't know why

    IMG: MCP3421 library.png

     
  • t.lundahl - 2015-05-07

    Hi,

    you sometimes need to make a watchlist of some variable to see some variables. I don't know all conditions but complex variables like ARRAY need it.

    /TorbjΓΆrn

     
  • Fab - 2015-05-20

    I wrote a library and a device description for the MCP3421 with a type-K temperature sensor connected to the pi.
    It's poor written but it's a start and it works for me
    i hope anyone else can maybe make use of this too.

    I2C_MCP3421.library [327.35 KiB]

    I2C_MCP3421.devdesc.xml [2.98 KiB]

     

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