Modbus address to get SOC %

[lox]

Hi,

I don't seem to find how to get my battery % (I have a wizbang) from modbus, I can get the load on the battery (negative or positive at address 4371) without an issue, but I don't find the modbus address for battery percentage and remaining Ah.

Anyone ?

Thank you.

[Graham]

Hi,

I don't seem to find how to get my battery % (I have a wizbang) from modbus, I can get the load on the battery (negative or positive at address 4371) without an issue, but I don't find the modbus address for battery percentage and remaining Ah.

Anyone ?

Thank you.

Here is a code snip from my android app, the soc is at 4372 and the remaining amps is 4376

                if (foundWhizBangJr) {
                    Register[] registers2 = modbusMaster.readMultipleRegisters(4360, 22);
                    if (registers2 != null && registers2.length == 22) {
                        Integer val = ((registers2[5].getValue() << 16) + registers2[4].getValue());
                        readings.set(RegisterName.PositiveAmpHours, val);
                        val = (registers2[7].getValue() << 16) + registers2[6].getValue();
                        readings.set(RegisterName.NegativeAmpHours, Math.abs(val));
                        val = (registers2[9].getValue() << 16) + registers2[8].getValue();
                        readings.set(RegisterName.NetAmpHours, val);
                        readings.set(RegisterName.ShuntTemperature, ((short)registers2[11].getValue() & 0x00ff) -50.0f);
                        Register a = registers2[10];
                        readings.set(RegisterName.WhizbangBatCurrent, a.toShort() / 10.0f);
                        Register soc = registers2[12];
                        short socVal = soc.toShort();
                        readings.set(RegisterName.SOC, socVal);
                        readings.set(RegisterName.RemainingAmpHours, registers2[16].toShort());
                        readings.set(RegisterName.TotalAmpHours, registers2[20].toShort());
                    } else {
                        Log.w(getClass().getName(), String.format("Modbus failed to read 4360 readMultipleRegisters returned null"));
                        throw new ModbusException("Failed to read data from modbus 4360");
                    }
                }


Graham.

[lox]

Thanks a lot. Those are undocumented ...

WbJrPercentLeft is 4373
WbJrRemainingAmpHours is 4377
WbJrTotalAmpHours is 4381