Mitsubishi Melsec-L Series User Manual page 207

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(Program example)
When C24 I/O signals are from X/Y00 to X/Y1F:
1) Transmission command is converted into pulse.
2) Transmission data is stored.
3) Specify the number of the interface (CH ) that sends the data.
4) Clear the transmission result storage device to 0.
5) Specify the transmission data count word units. (Specify K10 when the unit is
bytes.)
6) The transmission data stored in the specified device is sent.
7) After the BIDOUT instruction is executed, the transmission complete signal (M0)
specified by user turns ON for one scan.
8) The error code of the transmission result storage device is saved to D101.
9) The completion flag is reset by an external command.
11 DATA COMMUNICATION USING THE BIDIRECTIONAL PROTOCOL
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