6
Display and Operating Components
6.1
Display
6.1.1
General Information
All device variants of the VPP 21 are equipped with a TFT display of size 14".
When leaving the factory, brightness and contrast are already set. The colors
can be adapted to the requirements of the environment via the operating system
or the application software.
6.1.2
Backlight Switch-off
General Information
The backlight as background lighting of the display has a limited lifetime (see
chapter 4.6 "Wear Parts" on page 19
).
To extend the service life of the TFT backlight, the flat screen display features
a backlight switch-off. This function "darkens" the display, if no operation of the
operator terminal has occurred for a certain period of time. The length of the
time interval can be specified in the BIOS settings and in the Windows Control
Panel.
Activate Backlight Switch-off:
●
Select in the BIOS setup program menu item "Power Management Set‐
up" and then submenu item "OnBoard LCD Backlight Timer OFF" and
choose as time interval between "28 sec and 14 min".
●
Install a screen saver in the operating system, that will switch the display
to a "black signal" (blank screen, i. e. no objects visible on the screen).
Thereby, select the time interval, after which the screen saver might be
activated. The selected time is added to the "Backlight Timer OFF" time
set in the BIOS.
Ensure that the set interval for the screen saver activation is shorter
than the time for the activation of the backlight switch-off. If this is
not the case, problems to reactivate the display might occur.
If the display is "darkened" and does not react to a keyboard input
or mouse movement, generally, the backlight can be reactivated by
pressing the key combination "CTRL" + "Tab".
6.2
Operator Terminals with Keypad
6.2.1
Overview
The operator terminals hand-held terminals.VPP 21.2 BQ are equipped with a
keypad (IP 64) with 57 keys.
Furthermore, three buttons (START, STOP, E-STOP) are integrated in the front
panel top right as well as three navigation keys are integrated in the handle bar
on the left and the right of the display.
Project Planning Manual | Rexroth IndraControl VPP 21.2
Electric Drives
and Controls
| Bosch Rexroth AG
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Display and Operating Components
