Connection and addressing notes
- Protocol
- Modbus TCP
- Default device address
- 100
- Device address meaning
- unit-id for the com.victronenergy.system data
- Register addressing
- decimal
- Register set grouping
- one register set per dbus service (column dbus-service-name)
Registers in the map: 817 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 3 (holding registers). byte order big-endian. data types: dword, integer, smallint, string(12), string(14), string(16), string(32), word.
| MODBUS offset | Description | Units | Data type | Scale |
|---|---|---|---|---|
| 834 | GX firmware major version | word | ||
| 835 | GX firmware beta release | word | ||
| 800 | Serial (System) | string(12) | ||
| 806 | CCGX relay 1 state | word | ||
| 807 | CCGX relay 2 state | word | ||
| 808 | PV - AC-coupled on output L1 | W | word | |
| 809 | PV - AC-coupled on output L2 | W | word | |
| 810 | PV - AC-coupled on output L3 | W | word | |
| 811 | PV - AC-coupled on input L1 | W | word | |
| 812 | PV - AC-coupled on input L2 | W | word | |
| 813 | PV - AC-coupled on input L3 | W | word | |
| 814 | PV - AC-coupled on generator L1 | W | word | |
| 815 | PV - AC-coupled on generator L2 | W | word | |
| 816 | PV - AC-coupled on generator L3 | W | word | |
| 817 | AC consumption L1 | W | word | |
| 818 | AC consumption L2 | W | word | |
| 819 | AC consumption L3 | W | word | |
| 820 | Grid L1 | W | smallint | |
| 821 | Grid L2 | W | smallint | |
| 822 | Grid L3 | W | smallint | |
| 823 | Genset L1 | W | smallint | |
| 824 | Genset L2 | W | smallint | |
| 825 | Genset L3 | W | smallint | |
| 826 | Active input source | smallint | ||
| 840 | Battery voltage (System) | V DC | word | ×0.1 |
| 841 | Battery current (System) | A DC | smallint | ×0.1 |
| 842 | Battery power (System) | W | smallint | |
| 843 | Battery state of charge (System) | % | word | |
| 844 | Battery state (System) | word | ||
| 845 | Battery consumed amphours (System) | Ah | word | ×0.1 |
| 846 | Battery time to go (System) | s | word | ×100 |
| 850 | PV - DC-coupled power | W | word | |
| 851 | PV - DC-coupled current | A DC | smallint | ×0.1 |
| 855 | Charger power | W | word | |
| 860 | DC system power | W | smallint | |
| 865 | VE.Bus charge current (System) | A DC | smallint | ×0.1 |
| 866 | VE.Bus charge power (System) | W | smallint | |
| 872 | Power between meter and inverter/charger, L1 | W | integer | |
| 874 | Power between meter and inverter/charger, L2 | W | integer | |
| 876 | Power between meter and inverter/charger, L3 | W | integer | |
| 878 | Power on output of inverter/charger, L1 | W | integer | |
| 880 | Power on output of inverter/charger, L2 | W | integer | |
| 882 | Power on output of inverter/charger, L3 | W | integer | |
| 884 | PV - AC-coupled on output L1 | W | dword | |
| 886 | PV - AC-coupled on output L2 | W | dword | |
| 888 | PV - AC-coupled on output L3 | W | dword | |
| 890 | PV - AC-coupled on input L1 | W | dword | |
| 892 | PV - AC-coupled on input L2 | W | dword | |
| 894 | PV - AC-coupled on input L3 | W | dword | |
| 896 | PV - AC-coupled on generator L1 | W | dword |
This is not the complete map: 50 of 817 registers are listed above. Click "Read register values online" to read any register of your device in the browser, or download the program to log the complete map.