Sauna RS485 connection with LM

[Thinklight]

This is correct that I done in resident  for reading:

Code:

require('serial')
port = serial.open('/dev/RS485-1', { baudrate = 57600, parity = 'none', duplex = 'half', databits = 8, stopbits = 1 })
port:flush()

grp.write('32/2/2', port:write(('get sauna val\r'), 'uint16'))

port:close()