9 DEDICATED INSTRUCTIONS
9.6 BIDIN Instruction
This instruction receives data using the bidirectional protocol.
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| Applicable device |
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Set | Internal device |
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| MELSECNET/H, |
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| MELSECNET/10 | Special module |
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data | (System, user) |
| File register |
| Index register Zn | Constant | Others | |||||||||||||||||||||||
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| Direct J | \ |
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| U \G |
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| Bit |
| Word |
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| Bit |
| Word |
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(S) | — |
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| — |
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(D1) | — |
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| — |
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(D2) |
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| — |
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| [Instruction |
| [Executing |
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| code] |
| condition] |
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| Command |
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| Un |
| (S) |
| (D1) |
| (D2) |
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| BIDIN |
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| G.BIDIN |
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| BIDIN |
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| Command |
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| GP.BIDIN |
| Un |
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| (S) |
| (D1) |
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| (D2) |
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Set data
Set data | Description | Set by | Data type | |
Un | Start I/O signal of the module | User | BIN16 bit | |
(00 to FE: Top | ||||
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(S) | Head number of the devices in which control data is stored. | User, |
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system | Device name | |||
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(D1) | Head number of the devices in which receive data is stored. | System |
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(D2) | Bit device number to be turned on at completion of execution. | System | Bit |
The file register per local device and program cannot be used as the set data.
Control data
Device | Item | Set data | Setting range | Set by 2 |
| • | Set receive channel |
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(S) + 0 | Receive channel | 1: Channel 1 (CH1 side) | 1, 2 | User |
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| 2: Channel 2 (CH2 side) |
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| • | Reception result by a BIDIN instruction are |
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(S) + 1 | Reception result | stored. | — | System |
0:Normal
(S) + 2 | Receive data count | • | The number of data received is stored. | 1 | 1 or more | System |
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(S) + 3 | Allowable number of | • | Set the allowable number of words for received | 1 or more | User | |
receive data |
| data that can be stored in (D1). |
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POINT
(1)The command of G (P).BIDIN cannot be converted into pulse.
(2)G (P).BIDIN should be executed while the read request of the input/output signal is turned on.
9 - 14 | 9 - 14 |