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MELSEC-Q
11 INSTRUCTIONS AND FUNCTIONS
Since the DC control and the control by signals require specification using the lower
and higher bytes, it is convenient to use hexadecimal numbers as shown below.
%(1)=&H
Express the lower byte as
a 2-digit hexadecimal number.
Express the higher byte as
a 2-digit hexadecimal number.
• Specify the number of bytes for the receive buffer size in the following manner:
0
:
No receive buffer (data received before the execution of
a receive request is ignored.)
1 to 1024 bytes
:
Use receive buffer (1024 bytes are recommended).
• %(2) contains meaningless data as it is used by the system of BASIC.
When the communication parameters are set, all receive buffer memory is cleared and all
control signal statuses are initialized.
