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7.
INITIAL SETTING OF TRANSMISSION CONTROL DATA TO
BUFFER MEMORY
MELSEC-A
etting method
1
(1) Bidirectional mode
b15
to
bO
Buffer memory
address 112H
(Default:
0)
Write 1.
0: No-protocol mode
1: Bidirectional mode
When the bidirectional mode is set, settings with buffer memory addres-
ses 113H to 115H are valid.
(2)
Time-out check time
Buffer memory
address 113H
(Default: OH)
Write O H to FFFFH.
-
OH:
Time-out check disabled (infinite wail)
I H to FFFFH: Timeaut check enabled
1
Set value is processed as 1 to
65535 which is the time-out check timc
Time-out check is executed during the
response message wait.
,
(Unit: 1 W msec)
(3) Data validlinvalid at simultaneous transmission
b16
to
b8 b7
to
bO
Buffer memory
address 114H
j
I
(Default: 0000H)
1
Write
1
or 0.
Li
0: Received data valid:
The ACK code is transmitted after receiving data.
1: Received data invalid:
Received data is ignored.
Write 1 or 0.
I
0: Send data valid:
Waits for the response message after sending datz
(4) Check sum enableldisable
1: Send data invalid:
Data send error occurs and the operation ends.
Buffer memory
address 115H
(Default: 0)
Write 1 or
0,
0 (Cneck sum enab e adaed
I
1 (Cneck sum d sab ed not aaded )
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