6
Quick Start Guide
TWR-PXR40 Jumper Options
The following is a list of all jumper options. The default installed jumper settings are
shown in white text within the blue boxes and the default function in
bold
.
5
General Jumper Configuration
Jumper
Function
J8
Enable/Disable potentiometer
J10
Enable/Disable SW2
J19
Enable/Disable SW3
J12
Enable/Disable on-board CAN transceiver terminator resistor
J20
Enable/Disable on-board RS485 half duplex transceiver terminator resistor
J17
Enable/Disable RS485 half duplex control lines
J18
Enable/Disable RS485 half duplex control lines
J13
Enable/Disable OSJTAG interface bootloader mode
UART Configuration
Jumper
Position
Function
J25
1-2
UART_A RX is connected to RS485 transceiver
2-3
UART_A RX is connected to UART0_RX on primary elevator
J28
1-2
UART_A TX is connected to RS485 transceiver
2-3
UART_A TX is connected to UART0_TX on primary elevator
J26
1-2
UART_B RX is connected to OSJTAG
2-3
UART_B RX is connected to UART1_RX on primary elevator
J1
1-2
UART_B TX is connected to OSJTAG
2-3
UART_B TX is connected to UART1_TX on primary elevator
