RS485

[Girish]

Try a connecting to a different port,  I found that with a LM4 only one port was working

I created a function and stored this in the Common scripts.

Code:

function sendSOMFY(command)
 require('serial')
 port = serial.open('/dev/RS485-3', { baudrate = 4800, parity = 'odd', duplex = 'half', databits = 8, stopbits = 1 })
 port:flush()
 port:write(command)
 port:close()
 sleep(0.1)
end

Also the codes you use,  there are different versions of the Somfy command generator.  Depending on what type of motor being used each version may generate a different RS485 command.  Also be sure your selecting the right addressing scheme, ie individual or group which is determine by how that motor has been programmed.

thx

Roger