Horner APG XL4 OCS - Manual (Page 77)

MAN0964-01-EN CH.13
June 29, 2012 Page 77 of 122
Figure 13.4 – Force and Switch Coils in Ladder Programming
There is also a system register that can be used to for control based screen navigation. %SR1 can be
read to determine the current screen or written to change the current screen.
Refer to the on-line help in Cscape for more information on control-based screen navigation.
13.6
Beeper Acknowledgement
The XL4 contains an internal beeper that provides an audible acknowledgment when an operator touches
a graphic object that accepts touch input. When the graphic object is enabled, a short 5ms tone is
emitted. When the graphic object is disabled, a longer 100ms 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.
13.7
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 XL4
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 XL4 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(Low) to 5 (High)] 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.
13.8
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.