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Thread: Somfy blind integration questions

  1. #1
    Junior Member
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    Mar 2017
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    Somfy blind integration questions

    RA2 already up and running just for lighting, single main repeater and connect bridge, approx. 40 devices

    Client is having 12 or 14 Somfy blinds installed
    Blind installer is supplying Somfy URTSII(all blinds are RF) and at my request a Somfy Connect LTI for Lutron interface.

    Somfy supplier wants $350 for their RS485 to USB converter used for the programming only part.
    In Somfy LTI instructions it mentions 485usbtb-2w from B&B smartworx, $100, has anyone used this one?
    Or will any RS485 to USB and driver work?


    In general any "heads up" about this interface?
    Programming pitfalls :)

    These blinds are not two-way so visual reference only, i.e. press UP button and blind will move up and either stop at preset limit or stop if you press STOP button, same for DOWN.
    No 1/4, 1/2, or 3/4 up or down

  2. #2
    What did you end up using for programming the Somfy Connect LTI? We just ordered a USB to RS232 to try since that is what the connector on the LTI is. If it doesn't connect to the software guess we will have to order the other cable. Also how easy was it to integrate? Thanks.

  3. #3
    I'm really interested in this info as well.

  4. #4
    Junior Member
    Join Date
    Mar 2017
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    3
    This is for a full remodel, so still a month or two away, as far as the Somfy blind integration.
    RA2 system had been in for about 6 months before remodel.
    Somfy blind installer hasn't gotten the LTI yet for me to test with, so don't know if my current "generic" 485/usb will work with it.

    It looks fairly straight forward for integration, when LTI is connected to RA2 via RS232 and Laptop via RS485/USB, you activate a button on RA2 system the LTI "sees" that on the RS232 and forwards it to the RS485/laptop, you see the Lutron data, Device number and Button number, then you assign that device/button a "command" function in the LTI, so when the LTI is connected to the Somfy Radio interface(URTSII) it will send out that Somfy "command string" when that RA2 button is pressed.
    Looks time consuming, and probably easy to screw up, lol, but thats the way I understand it should work.

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