Configuration Commands

• Open connection:
  

  require('serial')
  port = serial.open('/dev/RS232', {baudrate = 9600})

• Write to Port:
  
  

  port:write('test data')

• Blocking Read:
  -- Script will block until 10 characters are read

  data = port:read(10)

• Timeout Read
  

  -- Script will wait for 10 characters for 20 seconds

  data = port:read(10, 20)

• Close serial port
  

  port:close()

RS-485 serial line

Controlled similarly using the same configuration commands. The only difference lies in the serial.open command:

port = serial.open(‘/dev/RS485’, {baudrate = 9600})

For more detailed information about RS-232 communication, please refer to the respective application note available at www.se.com Application Notes).