The BMS Display has three headers for connecting the BMS (P3, P4 и P5), a header for an external button (P6) and a switch which connects a terminal resistor to the CAN bus (SWD1).
P3, P4 and P5 – headers for communication with BMS
Pin
Name
Description
1
CANH
CAN H line for communication with the BMS controller
2
CANL
CAN L line for communication with the BMS controller
3
+5V
Supply voltage 5 V
4
GND
Ground
P6 – header for external button
Pin
Name
Description
1
BTN1
Button line (dry contact)
2
BTN2
Button line (dry contact)
SWD1 - CAN terminal resistor switch
To connect the terminal resistor between the CANH and CANL lines, switch the SWD1 to the ON position.