canClose (Function)

This closes a CAN port previously opened by canOpen. Call this function to close the CAN port when done with sending and receiving messages.

Input:

port : SINT (1/2) (default 1)

The port of the CAN bus.

Returns: INT

Declaration:

FUNCTION canClose : INT;

VAR_INPUT
   port : SINT := 1;
END_VAR;

Example:

INCLUDE rtcu.inc
 
VAR
   ignition : BOOL;
END_VAR;
 
PROGRAM test;
VAR
   can_open : BOOL;
END_VAR;
 
BEGIN
   ...
   IF ignition THEN
      IF NOT can_open THEN
         IF canOpen(baud:=250) = 0 THEN
            can_open := THEN;
         ELSE
            DebugMsg(message:="CanOpen - Failed!");
         END_IF;
      END_IF;
   ELSE
      IF can_open THEN
         canClose();
         can_open := FALSE;
      END_IF;
   END_IF;
   ...
END;
END_PROGRAM;