6 DATA COMMUNICATION USING THE NON PROCEDURE PROTOCOL
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| Q series C24 |
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PLC CPU |
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| Receive area |
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| Reception error causing data | ||||||||||||||||||||||||
MODE. | Reception |
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Q25HCPU |
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RUN. |
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| abnormal | Receive data |
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| Receive | |||||||
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| count storage |
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ERR. |
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| detection |
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USER. |
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| (00H) | (03H) |
| Head data |
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| complete code |
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BAT. |
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| area |
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BOOT. |
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| A | STX |
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| Receive data |
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| storage area |
| (41H) (02H) |
| STX | A | B | C | D | E | F | G | H | ETX |
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| INPUT |
| C | B |
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| (02H) | (41H) | (42H) | (43H) | (44H) | (45H) | (46H) | (47H) | (48H) | (03H) | ||||||||||||||
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| instruction |
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| (43H) | (42H) |
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| E | D |
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| (45H) | (44H) |
| Transmission data |
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| External device | ||||||||||||||||
USB |
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Q series C24 ready signal | (X1E) |
Reception data read request | (X3) |
Reception abnormal | (X4) |
detection signal |
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INPUT instruction |
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INPUT instruction complete device |
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INPUT instruction complete device + 1 |
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(normal completion/abnormal |
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completion) |
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Receive data count storage area |
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(Buffer memory address: 600H) |
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Receive data storage area |
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| Receive data |
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(Buffer memory addresses: 601H to) |
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Reception abnormal detection data
Data reception
When the data from "G" to in the reception message shown in the figure above is received normally, the data is stored in the Q series C24 OS area.
The receive data stored in the OS area will be read to the PLC CPU in the succeeding read operation.
6 - 19 | 6 - 19 |