APBDG0L031K0FA
17/35
apbdg0l031k0fa_g_en_101
5.1. Power supply connector pinout
APBDG0L031K0FA
computer is equipped with 4-pin connector of
WAGO 769-
634 type labeled as PWR. It’s used as power supply connector.
PIN
Signal
Signal type
1
Vcc
Power supply
2
PE
Computer chassis
3
GND
Power supply, Ground
4
SB
Turning the computer ON
5.2. Computer start up and shut down
Terminal Vcc is used for computer power supply. Unit is switched ON/ OFF
using the SB terminal. After connecting power supply voltage to SB terminal
(terminal Vcc must be attached to power supply) the unit’s power supply is
switched ON and the internal piezo-buzzer shortly beeps.
Then follows start of operating system and user application is launched.
SB terminal
Device status
Vcc
Device is ON
Not connected
Device is OFF
In terms of data consistence, the unit's start-up is not critical and can be
realized either by coincident connecting of power supply voltage to Vcc and SB
terminals, or by connecting the voltage first to Vcc terminal and then to SB, or
vice versa. Nevertheless, when starting up, an incorrect progress is not
possible.
Vcc
SB
HW state
ton
toff1
t
SW state
Fig. 7 - Correct start up / shut down
PWR
connector
pinout
SB function
Power ON