E1000 HMI support as series of “system signals” that allow designers to control certain features of the HMI. In this tip we look at control of the backlight.
With a project open in the E Designer software, select System Signals from the Setup menu and you will see the following window:
In this example the data register D0 controls the backlight illumination where a value of zero is minimum illumination and 100 is maximum illumination. Also in this example the bit device M0 is used to turn the backlight ON or OFF. A value of zero is backlight OFF and a value of 1 is backlight ON.
For the older E range HMIs, before the E1000 series, the backlight illumination was controlled by the following command line instruction DIM followed by a data register.In the example below data register D0 controls the illumination and takes a value in the range -63 to +63.
For further information see the help system within the E Designer software.