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BMS AP9921X-AP9922; RS485 (Modbus Wiring Pinout)

Published date: 19 September 2018

AP9921X-AP9922 Battery Management System RS485 (Modbus Wiring Pinout)
Product line:
AP9921X-AP9922, Battery Monitoring System (BMS)
AP9921X-AP9922 Wiring for Modbus
The manual shows the DB9 connection for the RS485/Modbus says Pin2:D0, Pin:D1

Pin2:D0 (Positive), Pin3:D1 (Negative)

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