RTU mode: Command message:
ADR | 01H |
CMD | 08H |
|
|
data | 00H |
|
|
Starting address | 00H |
data | 17H |
| 70H |
|
|
CRC CHK LOW | EEH |
CRC CHK HIGH | EFH |
|
|
Response message: |
| |
ADR |
| 01H |
CMD 1 |
| 08H |
|
|
|
data |
| 00H |
Starting address |
| 00H |
data |
| 17H |
|
| 70H |
|
|
|
CRC CHK LOW |
| EEH |
CRC CHK HIGH |
| EFH |
|
|
|
Chapter 4 Parameters
Error response message
ADR | 01H |
CMD 1 | 88H |
|
|
Error code | 02 |
|
|
CRC CHK LOW | E0H |
CRC CHK | 6DH |
HIGH |
|
|
|
●Command code: 10H, write continuous words
For example, modify
ASCII mode:
Command message:
STX | ‘:’ |
ADR 1 | ‘0’ |
ADR 0 | ‘1’ |
CMD 1 | ‘1’ |
CMD 0 | ‘0’ |
Data | ‘0’ |
Starting | ‘5’ |
address | ‘0’ |
| ‘0’ |
Number | ‘0’ |
Of | ‘0’ |
data | ‘0’ |
(Word) | ‘2’ |
Number of | ‘0’ |
data (Byte) | ‘4’ |
The first | ‘1’ |
data | ‘3’ |
| ‘8’ |
| ‘8’ |
The second | ‘0’ |
data | ‘F’ |
| ‘A’ |
| ‘0’ |
Response message:
STX | ‘:’ |
ADR 1 | ‘0’ |
ADR 0 | ‘1’ |
CMD 1 | ‘1’ |
CMD 0 | ‘0’ |
Data | ‘0’ |
address | ‘5’ |
| ‘0’ |
| ‘0’ |
Number | ‘0’ |
Of | ‘0’ |
data | ‘0’ |
(Word) | ‘2’ |
LRC CHK 1 | ‘E’ |
LRCCHK 0 | ‘8’ |
END 1 | CR |
END 0 | LF |
Error response message
STX | ‘:’ |
ADR 1 | ‘0’ |
ADR 0 | ‘1’ |
CMD 1 | ‘9’ |
CMD 0 | ‘0’ |
Error | ‘0’ |
code | ‘2’ |
LRC CHK 0 | ‘6’ |
LRC CHK 1 | ‘D’ |
END 1 | CR |
END 0 | LF |
Revision July 2008, EG03, SW V1.06 |
