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5-1SectionUsing Protocol Macros
60
Item Description
Sequence contents
(step common
Number of steps
per sequence
16 max.
parameters)
Transmission
control
parameters
X-on/X-off flow, RTS/CTS flow, delimiter control, or contention control,
and modem control can be selected.
Response
notification
method (operand)
Scan notification or interrupt notification (i.e., writing the receive data in
the I/O memory area specified in the 3rd operand of the PMCR(––)
instruction) can be selected.
Scan notification:
Writes the receive data to I/O memory during CPU Unit scanning.
Interrupt notification:
Writes the receive data to I/O memory as soon as it is received, and at
the same time specifies the execution of the interrupt program for the
CPU Unit.
Scan method
(fixed)
Yes
Interrupt
notification
Yes
Interrupt
notification for
reception case
number
Yes
Monitoring time
during
send/receive
processing
Receive wait, receive completion, or send completion can be
monitored.
Setting range: 0.01 to 0.99 s, 0.1 to 9.9 s, 1 to 99 s, or 1 to 99 min
Link word setting Area in which data is exchanged between the CPU Unit and the Serial
Communications Board during Serial Communications Board
refreshing. Two areas are possible for each device: An area for storing
receive data and an area for storing send data.