serClose (Function)

serClose will close the serial port. Use of the serial port after calling this function is not allowed.

Input:

port : SINT (0..127) (default 0)

Selects which serial port to close.

Returns:

None.

Declaration:

FUNCTION serClose;
VAR_INPUT
   port  : SINT := 0;
END_VAR;

Example:

INCLUDE rtcu.inc
 
VAR
   ignition : BOOL;
END_VAR;
 
PROGRAM test;
VAR
   ser_open : BOOL;
END_VAR;
 
BEGIN
   ...
   IF ignition THEN
      IF NOT ser_open THEN
         IF serOpen(port:=1,baud:=57600) = 0 THEN
            ser_open := TRUE;
         ELSE
            DebugMsg(message:="serOpen - Failed!");
         END_IF;
      END_IF;
   ELSE
      IF ser_open THEN
         serClose(port:=1);
         ser_open := FALSE;
      END_IF;
   END_IF;
   ...
END;
END_PROGRAM;