Chapter 4 Parameters
RTU mode:
Command message:
ADR | 01H |
CMD | 06H |
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|
data | 01H |
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|
Starting address | 00H |
data | 17H |
| 00H |
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|
CRC CHK LOW | 87H |
CRC CHK HIGH | C6H |
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|
Response message:
ADR | 01H |
CMD 1 | 06H |
|
|
data | 01H |
|
|
Starting address | 00H |
data | 17H |
| 70H |
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|
CRC CHK LOW | 87H |
CRC CHK HIGH | C6H |
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|
Error response message
ADR | 01H |
CMD 1 | 86H |
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|
Error code | 02 |
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CRC CHK LOW | C3H |
CRC CHK HIGH | A1H |
●Command code: 08H, loop detection
This command is used to test the communication condition between master control
equipment (usually is PC or PLC) and AC drive. AC drive will deliver the data that received
from AC drive to master control equipment.
For example:
ASCII mode:
Command message:
STX | ‘:’ |
ADR 1 | ‘0’ |
ADR 0 | ‘1’ |
CMD 1 | ‘0’ |
CMD 0 | ‘8’ |
|
|
data | ‘0’ |
Starting | ‘0’ |
address | ‘0’ |
| ‘0’ |
data | ‘1’ |
| ‘7’ |
|
|
| ‘7’ |
| ‘0’ |
LRC CHK 1 | ‘7’ |
LRC CHK 0 | ‘0’ |
END 1 | CR |
END 0 | LF |
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|
Response message:
STX | ‘:’ |
ADR 1 | ‘0’ |
ADR 0 | ‘1’ |
CMD 1 | ‘0’ |
CMD 0 | ‘8’ |
|
|
data | ‘0’ |
Starting | ‘0’ |
| ‘0’ |
| ‘0’ |
data | ‘1’ |
| ‘7’ |
|
|
| ‘7’ |
| ‘0’ |
LRC CHK 1 | ‘7’ |
LRC CHK 0 | ‘0’ |
END 1 | CR |
END 0 | LF |
|
|
Error response message
STX | ‘:’ |
ADR 1 | ‘0’ |
ADR 0 | ‘1’ |
CMD 1 | ‘8’ |
CMD 0 | ‘8’ |
|
|
Error | ‘0’ |
code | ‘2’ |
LRC CHK 0 | ‘6’ |
LRC CHK 1 | ‘D’ |
END 1 | CR |
END 0 | LF |
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Revision July 2008, EG03, SW V1.06 |
