Horner APG QX651 OCS - Manual (Page 57)

MAN0798-04-EN CH. 10
August 20, 2009 Page 57 of 95 ECN # 979
labeled Back or Previous to indicate to the operator that it is possible to transverse back to a previous
screen.
Figure 10-4 – Screen Jump Object (configured to return to previous screen)
Note that changing the current displayed screen though use of a display coil in ladder logic clears the
screen jump queue.
10.5 Beeper
Acknowledgement
The QX contains an internal beeper that provides an audible acknowledgment when an operator touches
a graphic object that accepts touch input. When the graphical object is enabled, a short 5mSec tone is
emitted. When the graphical object is disabled, a longer 100mSec tone is emitted to enounce that
graphical object is not currently accepting the touch input.
If beep acknowledgement is not desired, the beeper function can be disabled from the system menu.
10.6 Touch
(Slip) Sensitivity
Touch slip sensitivity is preset to meet most applications; however, adjustment is available to reduce the
sensitivity for touch release. That is, once a graphical object (button) is touched and held by a finger, the
default touch slip sensitivity allows for a slight slip of the finger on the graphical object before the QX
assumes touch been released (equates to approximately a quarter inch of movement with a stylus).
In some applications (such as jog buttons) where the operator is pushing a button for a period of time, the
amount of slip while holding a button pressed may exceed the default sensitivity. To increase the amount
of tolerable slip and prevent false releases of the button, the QX allows adjustment of the allowable slide
up to 5x the default value.
To enable the touch (slip) sensitivity, first an OCS data register must be allocated through the Graphics
editor Configuration menu for Display Settings. Once a Touch Sensitivity register is assigned, that
register may be modified (range = 1 to 5) to the desired slide amount. If a value outside the valid range is
entered in the touch sensitivity register, it is ignored and the last valid value is used.
10.7 Alarms
Alarm presentation to the operator is highly configurable and beyond the scope of this document to
describe fully. For more information refer to the graphics editor help file. This section presents a typical
configuration thereby providing an introductory description on what the operator should expect.