编写SerialPort

 It is possible to write data on a serial port through the DMIS code, for example:

DECL/CHAR,10,my_var
DECL/INTGR,ii
my_var=ASSIGN/'Here the value assigned!'
DID(my_com_device)=DEVICE/COMM,'com3:9600,n,8,1'
OPEN/DID(my_com_device),DIRECT,INPUT
  DO/ii,1,10,1
    WRITE/DID_com_device),my_var
  ENDDO
CLOSE/DID(my_com_device)