USB to RS232 on Androis tablet LOGICOM E912

Discussion in 'Android Tablet Q&A' started by bisra, Sep 2, 2013.

  1. bisra

    bisra Member

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    Location:
    Enghien, FRANCE
    Tablet / Device:
    LOGICOM E912
    I connected to my E912 tablet Logicom a Prolific USB to RS232 Circuit, id = 06b vendor, product id = 2303.
    The circuit is not detected by the Linux kernel.
    lsusb gives:
    Bus 001 Device 022: ID 067b:2303.


    The Prolific application "SimpleTest.apk" works on my phone but not on Logicom tablet.
    Tablet:
    Kernel version:3.3.0
    n° build:E91220130704
    Android version:4.1.1
    weidi@brn-weidi#3
    I would like to communicate using RS232 with this tablet. Do you have a solution for this?
     
  2. Spider

    Spider Administrator Staff Member

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  3. Traveller

    Traveller Super Moderator Staff Member

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    How old is your computer for it to still have RS-232 ports on it? USB, as I'm sure you likely know, has displaced RS-232 in most applications for two main reasons: faster speed and lower power requirements. I assume the peripheral you're attempting to use steps down the transmission speed and adjusts the power requirements to something the RS-232 port can handle?
     
  4. bisra

    bisra Member

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    I need to connect this tablet to an industrial machine that has only one RS232 port with Modbus protocol.
    I found a ModBus Library Android which will allow me to make a panel with the tablet.
     
  5. Traveller

    Traveller Super Moderator Staff Member

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    It's good you found a library. But unless you can change the speed of the USB port and change the USB bus power requirements so the USB port can properly communicate with the RS-232 port, you're likely to be SOL.
     

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