Connection and addressing notes
- Protocol
- Modbus
- Interface
- RS-485
- 0x registers
- write only, function 05
- 1x registers
- read only, function 02
- 3x registers
- read only, function 04
- 4x registers
- read/write, functions 03, 06, 10
- Register addressing
- addresses used as in the message frame (no extra offset)
- Byte order
- multi-byte fields high byte first
- CRC order
- low byte first
- Error response
- function code plus 0x80
Registers in the map: 222 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 2 (discrets). function 4 (input registers). byte order big-endian. data types: bit, dword, integer, smallint, word.
| MODBUS offset | Description | Units | Data type | Scale |
|---|---|---|---|---|
| 2500 | No grid | bit | ||
| 2501 | Grid over voltage | bit | ||
| 2502 | Grid under voltage | bit | ||
| 2503 | Grid over frequency | bit | ||
| 2504 | Grid under frequency | bit | ||
| 2505 | Unbalanced grid | bit | ||
| 2506 | Gird frequency jitter | bit | ||
| 2507 | Over impedance grid | bit | ||
| 2508 | Grid current tracking error | bit | ||
| 2509 | METER communication fail | bit | ||
| 2510 | FailSafe | bit | ||
| 2516 | Backup overvoltage fault | bit | ||
| 2517 | Backup overload fault | bit | ||
| 2532 | Battery not connected | bit | ||
| 2533 | Battery overvoltage detection | bit | ||
| 2534 | Battery undervoltage detection | bit | ||
| 2548 | DC overvoltage | bit | ||
| 2549 | DC bus overvoltage | bit | ||
| 2550 | DC bus unbalanced voltage | bit | ||
| 2551 | DC bus undervoltage | bit | ||
| 2552 | DC bus unbalanced voltage 2 | bit | ||
| 2553 | DC overcurrent on A circuit | bit | ||
| 2555 | DC input interference | bit | ||
| 2556 | Grid overcurrent | bit | ||
| 2557 | IGBT overcurrent | bit | ||
| 2558 | Grid interference 02 | bit | ||
| 2559 | AFCI self detection protection | bit | ||
| 2561 | Grid current sampling error | bit | ||
| 2564 | Grid interference | bit | ||
| 2565 | Over DC component | bit | ||
| 2566 | Over temperature protection | bit | ||
| 2567 | Relay check protection | bit | ||
| 2568 | Under temperature protection | bit | ||
| 2569 | PV insulation fault | bit | ||
| 2570 | 12V undervoltage protection | bit | ||
| 2571 | Leak current protection | bit | ||
| 2572 | Leak current self check protection | bit | ||
| 2573 | DSP initializing protection | bit | ||
| 2574 | DSP B proection | bit | ||
| 2575 | Battery overvoltage hardware fault | bit | ||
| 2576 | LLC hardware overcurrent | bit | ||
| 2577 | Gird transient overcurrent | bit | ||
| 2578 | CAN COM fail | bit | ||
| 2579 | DSP COM fail | bit | ||
| 2580 | Normal operation | bit | ||
| 2581 | Initializing | bit | ||
| 2582 | Controlled turning OFF | bit | ||
| 2583 | Fault leads to OFF turning | bit | ||
| 2584 | Stand-by | bit | ||
| 2585 | Limited operation (Caused by temperature, frequency etc | bit |
This is not the complete map: 50 of 222 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.