Spectrum Digital AppBox C21, Руководство пользователя

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AppBox C21 System User’s Guide 21
AppBox
3.3 Switches
The table below describes the switches on the AppBox C21 CPU board.
SWITCH NAME
TYPE OF
SWITCH
FUNCTION
FACTORY DEFAULT
POSITION
SW1
Pushbutton
switch
PA28_IRQ/GPIO Open
SW2, position 1, on Rocker switch
Connects RS485_A to
RS485_B
RS485 terminator on
X
SW2, position 1, off Rocker switch
Disconnects RS485_A
from RS485_B
RS485 terminator off
SW2, position 2, on Rocker switch
Connects CAN_H to
CAN_L
CAN terminator on
X
SW2, position 2, off Rocker switch
Disconnects CAN_H from
CAN_L
CAN terminator off
SW2, position 3, on Rocker switch
Connects LIN to LIN_PU,
LIN pull up
X
SW2, position 3, off Rocker switch
Disconnects LIN from
LIN_PU
No LIN pull up
SW2, position 4, on Rocker switch
Connects
PB23_RS485_EN to
RS485_ECHO,
RS485 echo
SW2, position 4, off Rocker switch
Disconnects
PB23_RS485_EN to
RS485_ECHO,
No RS485 echo
X
The figure below shows the switch, SW2, in the “Factory Default Position”. Switch positions 1, 2, and 3 are
in the “ON” position (slide moved to the right). Switch position 4 is in the “OFF” position (slide moved to the
left).
Switch SW2
ON position
OFF position