mdtScrollUp (Function)

This function moves the contents of the display one line up. The line that moves out of the display is deleted and an empty line is added at the bottom.

After this function has been called, the current position is at the lower left corner (1, 8).

Input:                

None.

Returns: INT

Declaration:

FUNCTION mdtScrollUp : INT;

Example:

INCLUDE rtcu.inc
 
PROGRAM test;
VAR
   rc : INT;
END_VAR;
 
BEGIN
   ...
   // Scroll display
   rc := mdtScrollUp();
   ...
END;
END_PROGRAM;