(5） Data frame error (Master transmission)
ENQ code (05H)
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| 1 |
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| 2 | ACK code (06H) |
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| 4 | Send data (ASCII code) | 3 |
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| HITACHI |
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| 3 second |
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| Send data (ASCII code) | elapse |
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| Slave |
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| 5 |
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| 3 second | |
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| Send data (ASCII code) | elapse | ||
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| Master (PC) | ||
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| 3 second |
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| elapse |
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| Send data (ASCII code) | 6 |
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① | Session starts when ENQ is sent from master to slave. |
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② | Slave acknowledges by returning ACK to master. |
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③ | Master sends data. |
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④ | For some reason, slave does not receive data. |
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⑤ | Master does not receive acknowledgment to the send code and repeats the sequence every 3 | |||
| seconds for 3 times. |
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⑥ | If unsuccessful after 3 attempts, master aborts the sequence and ends communication. | |||
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