title: Serial Port Commands
body: <p>I need to send commands through Serial Port to control a electronic device. According the datasheet of this device, the command structure is as follows:  Prefix Command Carriage Return. There are some commands, e.g. GOCW_BY1, STATUSRQ, etc. 
  The program will be developed in C++/CLI. After, I create the SerialPort objectand I set the port parameters, I send commands using the write("String") method of SerialPort class. However, I haven't still realized what kind of string I must set on write method.
  Moreover, I don't know the meaning of prefix. Could you help me?</p>