Register maps

JK BMS Modbus register maps

1 device with the register list read from the manufacturer's own manual, plus downloads for Modbus Poll.

From the manufacturer manual

Batteries and battery management systems RS485 general protocol V1.1 125 registers Modbus RTU over RS485 protocol of JK BMS (JIKONG, Chengdu Jikong Technology) battery management systems. The document is a general protocol and does not list product models; the vendor's download page names V1.0 for firmware V11.36. It defines four register blocks: settings at 0x1000, live data at 0x1200, device information at 0x1400 and write only commands at 0x1600. Per-cell values, protection thresholds, alarms, SOC and capacity are listed. The document also lists the per-cell connection and balance wire resistance registers, the protocol selection registers and the voltage and current calibration commands, but this file leaves them out.

All register maps · Modbus Poll