mdtContrast (Function)

Architecture:	X32 / NX32 / NX32L
Firmware version:	1.03 / 1.00.00

This controls the contrast in the display.

Input:

intensity : SINT (0..10)

The intensity of the backlight (0 = lowest contrast, 10=highest contrast).

Returns: INT

1	- Intensity out of bounds.
0	- Success.
-1	- MDT not present or communication error.
-2	- MDT not open.

Declaration:

FUNCTION mdtContrast : INT;
VAR_INPUT
intensity : SINT;
END_VAR;

Example:

INCLUDE rtcu.inc

PROGRAM test;

BEGIN
   ...
   // Set the contrast
   mdtContrast(intensity := 10);
   ...
END;
END_PROGRAM;