App. - 47 App. - 47
MELSEC-Q
APPENDIX
(2) Program example
Changes the initial setting
command into pulses.
Sets the word/byte units
designation to byte.
Transfers the setting value to
the word/byte units designation
area of the buffer memory.
Initial setting command 2
Abnormal completion of REMTO
instruction
Sets 400
H
to the buffer memory head
address for on-demand transmission.
Sets 0
H
to the buffer memory length
for on-demand transmission.
Sets 0C00
H
to the transmission
buffer memory head address.
Sets 400
H
to the transmission buffer
memory length.
Transfers the setting values to the
on-demand function designation
and transmission area designation
areas of the buffer memory.
Initial setting command 3
Abnormal completion of REMTO
instruction
Sets 600
H
to the receive buffer
memory head address.
Sets 200
H
to the receive buffer
memory length.
Transfers the setting value to the
receive area designation area of the
buffer memory.
Initial setting completion
Abnormal completion of REMTO
instruction
<Initial setting command>
<Setting of word/byte units designation>
<Setting of on-demand function designation and transmission area designation>
<Setting of receive area designation>
REMARK
When changing the default values of the following buffer memory areas, refer to
above (2) Program example to perform programming.
• DTR/DSR (ER/DR), DC control designation
• DC1/DC3 (Xon/Xoff) code designation
• DC2/DC4 code designation
• CD terminal check designation (for RS-232)
• Communication system designation (for RS-232)
• Simultaneous transmission priority/non-priority designation
• Retransmission time transmission method designation
• Simultaneously transmission data valid/invalid designation
• No-reception monitoring time (timer 0) designation
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