AMX NetLinx NXP-TPI/4, Operation/Reference Manual

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Installation
23 NXP-TPI/4 NetLinx Touch Panel Interface
Using a Touch Panel for both Mouse and Touch Pass-Thru Control
To enable a touch response on a panel page being routed through a computer; pass-thru enabling must
be done. Pass-thru control allows the TPI/4 to act as a control bridge between a computer and a touch
panel. The pass-thru is enabled on the TP4-RGB card.
This touch panel control option is available only if a Video Fill has been selected (select Yes from the
Windows >> Properties >> States TPD4 drop-down menu to enable). With Video Pass-Thru enabled,
the panel's touch coordinates are passed from the RGB card on a TPI/4 to the connected PC as USB
commands. This feature works only if the TP4-RGB card is connected directly to the PC, via the USB
port on the RGB card. The touch coordinates are scaled to fit the resulting window. This allows you to
"synch" the touch actions from the panel to those on the connected computer.
Computer control can be done by routing the Mouse and touch panel input control through the
TPI/4. In this scenario, the TPI/4 is virtually nonexistent as is akin to connecting the touch panel and
mouse directly to the rear of the computer. The computer views the TPI/4 and RGB card combo as an
adapter connected to a USB mouse device.
This method allows for both mouse and touch panel input
control of the computer (as seen in FIG. 14).
There is another way to allow touch pass-thru via the TPI4 RGB card instead of
issuing the ^MPS (Mouse pass-thru) and ^KPS (Keyboard pass-thru) send
commands.
The keyboard that is connected to the rear of the TPI/4 can assist in sending different
types of data by using the following keystrokes:
Ctrl+Alt+0 -> sends mouse and Keyboard data to TPI/4
Ctrl+Alt+1 -> sends mouse and Keyboard data to slot card 1
Ctrl+Alt+2 -> sends mouse and Keyboard data to slot card 2
Ctrl+Alt+3 -> sends mouse and Keyboard data to slot card 3
Ctrl+Alt+4 -> sends mouse and Keyboard data to slot card 4
FIG. 14 Using the TP4-RGB card for touch panel and mouse pass-thru control
Type-B USB cable
From USB Mouse
input device
between PC
and TPI/4
Signal video feed
from the computer
to the monitor (RGB)
through the TPI/4
(used to control actions
on computer pages
being viewed on touch panel)
(control is on
panel pages
found on the
computer and
displayed on
touch panel)
Touch Input
from touch
panel
Connect to touch panel
VGA output
The PS/2 or USB mouse must be connected before the initial power-up cycle. If
connected after the unit is powered, the TPI/4 must then have power cycled so that it
can detect the newly connected mouse. This detection is most useful when using a
CRT monitor.