MPP Solar RS485 - 3-2. RS485 Resistance Configuration; 3-3. SW1 Reset

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BMS RS-485 Card/Box Quick Guide
V.1.3
3-2. RS485 resistance configuration
Function
Bit #
Setting
Meaning
Push up resistance
# 6
ON
Enable (Default)
OFF
Disable
Push down resistance
# 7
ON
Enable (Default)
OFF
Disable
Terminate resistance
# 8
ON
Enable (Default)
OFF
Disable
3-3. SW1 Reset
All of dip switches in SW1 should be switched to “OFF” status.
Bit #
Setting
Meaning
# 1
OFF
Disable(Default)
# 2
OFF
Disable(Default)
# 3
OFF
Disable(Default)
# 4
OFF
Disable(Default)
# 5
OFF
Disable(Default)
# 6
OFF
Disable(Default)
# 7
OFF
Disable(Default)
# 8
OFF
Disable(Default)
There are three bits to configure the RS485
resistance. Use the bit #6, #7 and #8 of SW2 to
set RS485 Resistance. From top to bottom, it’s 1
to 8 as shown left. When the switch is pushed
down, the bit is set to “OFF”. Otherwise, the bit
is set as “ON”.