APPENDIX
Appendix 9.5 When sending data using nonprocedural or bidirectional protocol
The following program example sends data under the nonprocedural protocol (or bidirectional protocol) using the REMFR/REMTO instruction and I/O signals. Refer to Chapter 6 for the communication using the nonprocedural protocol, and to Chapter 7 for the communication using the bidirectional protocol.
(1) Program conditions
| The following program sends data from the CH1 side when the transmission | |||||||||
| signal (X1024) turns ON. |
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| (a) | Devices used: |
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| • Transmission command | ......................................................... |
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| X1024 | ||||
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| • Transmission command pulse signal..................................... | M10 |
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| • Transmission result acquisition command............................. | M11 |
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| • Completion device for REMFR/REMTO instruction .............. | M100 to 103 | |||||||
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| • Normal/abnormal completion flag for REMFR/REMTO |
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| instruction................................................................................ |
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| M200 to 202 | |||
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| • Normal/abnormal completion of transmission........................ | M300, M301 | |||||||
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| • Transmission data count ........................................................ | D10 |
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| • Transmission data (5 words) .................................................. | D11 to D15 | |||||||
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| • Data transmission result | ......................................................... |
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| D20 |
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| (b) Intelligent function module switch settings (Refer to Section 4.5.2) |
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Switch No. |
| Bit |
| Description |
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Position | Designated value |
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| b0 |
| OFF |
| Operation setting |
| Independent |
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| b1 |
| OFF |
| Data bit |
| 7 bits |
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| b2 |
| OFF |
| Parity bit |
| No |
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| b3 |
| OFF | Transmission | Even/odd parity |
| Odd |
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Switch 1 | b4 |
| OFF | setting | Stop bit |
| 1 bit |
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| 07C0H |
| b5 |
| OFF |
| Sum check code |
| No |
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| b6 |
| ON |
| Write during RUN |
| Enabled |
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| b7 |
| ON |
| Setting modifications |
| Enabled |
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| b8 to b15 |
| — | Communication rate setting |
| 19200bps |
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| 0006H | |||
Switch 2 |
| — | Communication protocol setting |
| or |
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| bidirectional protocol |
| 0007H | ||
Switch 5 |
| — | Station number setting |
| Station 0 |
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| 0000H | ||
| (c) Buffer memory settings used in this example |
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Address Decimal (Hexadecimal) |
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| Name |
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| CH1 |
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| value | ||
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| 150 (96H) |
| Word/byte units designation |
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| 162 (A2H) |
| Transmission buffer memory head address designation |
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| 0400H | |||
| 163 (A3H) |
| Transmission buffer memory length designation |
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| 0200H | |||
| 599 (257H) |
| Data transmission result |
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| — | |
App. - 39 | App. - 39 |