7 DATA COMMUNICATIONS USING BIDIRECTIONAL PROTOCOL
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| Q series C24 | |||
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| Address |
| Buffer memory | |||
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| For normal completion |
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| 257H |
| Data transmission result storage area |
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D 0 |
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Interface number | (0001H) |
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| 400H |
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D 1 |
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| Transmission data count designation area | ||||
Transmission result | (0000H) | |||||||||||||
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| 401H |
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D 2 | Transmission data count | (0005H) |
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| Transmission data designation area | ||||||
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D11 |
| (4241H) |
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| 5FFH |
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to | Transmission data | to |
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D15 |
| (0A0DH) |
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| For abnormal completion |
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D 0 |
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Interface number | (0001H) |
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D 1 | Transmission result (other than 0000H) |
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| From buffer memory (address 257H) | |||||||||
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D 2 | Transmission data count | (0005H) |
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D11 |
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| (4241H) |
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to | Transmission data | to |
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D15 |
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POINT
(1)The SPBUSY instruction is used to read the execution status when using a dedicated instruction. (See Chapter 9.)
(2)More than one BIDOUT instruction cannot be executed simultaneously. Execute the next BIDOUT instruction only after the execution of the first BIDOUT instruction is completed.
7 - 21 | 7 - 21 |