Chapter 4 Parameters
RTU mode: |
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Command message: |
| Response message: |
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ADR | 01H |
| ADR |
| 01H |
| ADR | 01H |
CMD | 03H |
| CMD |
| 03H |
| CMD | 90H |
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Starting data | 01H |
| Number of data |
| 04H |
| Error code | 02H |
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address | 01H |
| data 0101H |
| 17H |
| CRC CHK LOW | CDH |
Number of data | 00H’ |
| content |
| 70H |
| CRC CHK HIGH | C1H |
(Word) | 02H |
| 0102H |
| 08H |
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CRC CHK Low | 94H |
| content |
| 98H |
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CRC CHK High | 37H |
| CRC CHK LOW |
| FBH |
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| CRC CHK HIGH |
| 36H |
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●Command code: 06H, write a word
For example, writing 6000(1770H) to address 0100H of AMD with address 01H.
ASCII mode:
Command message:
STX | ‘:’ |
ADR 1 | ‘0’ |
ADR 0 | ‘1’ |
CMD 1 | ‘0’ |
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CMD 0 | ‘6’ |
data | ‘0’ |
starting | ‘1’ |
address | ‘0’ |
| ‘0’ |
data | ‘1’ |
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| ‘7’ |
| ‘7’ |
| ‘0’ |
LRC CHK 1 | ‘7’ |
LRC CHK 0 | ‘7’ |
END 1 | CR |
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END 0 | LF |
Response message:
STX | ‘:’ |
ADR 1 | ‘0’ |
ADR 0 | ‘1’ |
CMD 1 | ‘0’ |
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CMD 0 | ‘6’ |
data | ‘0’ |
starting | ‘1’ |
address | ‘0’ |
| ‘0’ |
data | ‘1’ |
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| ‘7’ |
| ‘7’ |
| ‘0’ |
LRC CHK 1 | ‘7’ |
LRC CHK 0 | ‘7’ |
END 1 | CR |
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END 0 | LF |
Error response message
STX | ‘:’ | |
ADR 1 | ‘0’ | |
ADR 0 | ‘1’ | |
CMD 1 | ‘8’ | |
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CMD 0 | ‘6’ | |
Error | ‘0’ | |
code | ‘2’ | |
LRC CHK 0 | ‘6’ | |
LRC CHK 1 | ‘D’ | |
END 1 | CR | |
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END 0 |
| LF |
Revision July 2008, EG03, SW V1.06 |
