| Register(s) | Meaning | Scale Unit | Data format | R/W |
|---|---|---|---|---|
| 0000h-0001h | total energy | 1/100 kWh | unsigned dword | R¹ |
| 0002h-0003h | reserved | unsigned dword | ||
| 0004h-0005h | reserved | unsigned dword | ||
| 0006h-0007h | reserved | unsigned dword | ||
| 0008h-0009h | export energy | 1/100 kWh | unsigned dword | R¹ |
| 000Ah-000Bh | import energy | 1/100 kWh | unsigned dword | R¹ |
| 000Ch | voltage | 1/10 V | unsigned word | R |
| 000Dh | current | 1/100 A | unsigned word | R |
| 000Eh | active power | 1 W | signed word | R |
| 000Fh | reactive power | 1 VAr | unsigned word | R |
| 0010h | power factor | 1/1000 | unsigned word | R |
| 0011h | frequency | 1/100 Hz | unsigned word | R |
| 0012h | reserved | unsigned word | ||
| 0013h | reserved | unsigned word | ||
| 0014h | reserved | unsigned word | ||
| 0015h:high | station address | 1-247 | unsigned char | R/W |
| 0015h:low | baud rate | 1-4² | unsigned char | R/W |
| 001Ah | relay³ | unsigned word | R/W |
Total, export and import energy counters can erased writing 0 in total energy registers.
Value mapping, default 1.
| Value | Baud rate |
|---|---|
| 1 | 9600 Bd |
| 2 | 4800 Bd |
| 3 | 2400 Bd |
| 4 | 1200 Bd |
In DDS238-2 ZN/SR model the relay can be switched by 0x001A register.
| Value | Relay |
|---|---|
| 0 | Off |
| 1 | On |
| Data format | Lenght | Byte order |
|---|---|---|
| char | 8 bits | |
| word | 16 bits | Big endian |
| dword | 32 bits | Big endian |
The meter does not understand the 'write sigle register' function code (06h), only the 'write multiple registers' function code (10h).