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7. INITIAL SETTING OF TRANSMISSION CONTROL DATA TO
BUFFER MEMORY-
MELSEC-A
(2) To set "half-duplex transmission", "non-priority", and resend.
Setting method
+
I
(1) Transmission method
b15
to
b l b O
IOFH
7
(Default: 0)
L--
write
I.
0: Fullduplex transmission
1: Half-duplexb-ansmission
POINT
Set bits b l to b15 of address 1 OFH to either 0 or 1. (The AlSJ71 C24 will
ignore the settings.)
(2)
Priority setting when transmission has begun simultaneously
b15
to
b O
1 tOH
7
1
(Default: 0)
Write 1 to 255.
This data sets the transmission wait time when data
transmission is started or restarted. (Unit: 1
W
msec)
(3)
Transmission method when data transmission is restarted
11 1
,
1 1
(Default: 0)
Write 0. (This can be omitted since the defautt is 0.)
I
0: Not resend
1: Resend
POINT
Set bits b l to b15 of address 11 1 H to either 0 or 1. (The A1SJ71 C24 will
ignore the settings.)
CD terminal check is set to "Enabled". Half-duplex transmission is used and the
non-priority of transmission and "resend" are set. (Send wait time: 100 msec) (AlSJ71C24
I10
addresses: 80 to 9F)
Leave the setting of buffer memory address lOBH
for default.
(Sequence Program)
I +
k - 1
TOP
TOP
-
TOP
Write
'lo'
to buffer memory address l l O H
H8
H I 1 0
- -
H8
H8
-
K10
H i 1 1
-
Write 'I ' to buffer memoly address 11 1 H.
HIOF
K I
Write
'i'
to buffer memory address IOFH.
K1
Kt
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