title: vb.net application RS485 ascii communication
body: <p>I have built a vb.net application that ran on a pc using RS232 and communicated with a serial device.  The application worked great.  The application has migrated to use an industrial PC with a RS485 port that will automatically convert my RS232 to RS485.  My question is the device I am working with has a default RS485 address of 7.  I am unsure how this address works with ascii RS485.  I know how the addressing works with modbus over 485 but not with ascii communication (the specifical type of communication is <strong>SCPI</strong> <em>Standard Commands for Programmable Instruments</em>).  </p>
  
  <p>I am using the standard .net <strong>System.IO.Ports.SerialPort</strong> class and not sure how this RS485 address fits in with this communication scheme.  </p>
  
  <p>Any thoughts would be great.</p>