7.
INITIAL SETTING OF TRANSMISSION CONTROL DATA TO
BUFFER MEMORY
7.2.2
Setting non-priority of transmission to the AJ71C24 with the half-duplex transmission
The following shows how to set the AJ71 C24 t o discontinue transmission when
the AJ71C24 and an external device (using half-duplex transmission) have
begun transmitting data to each other sim&aneousiy
(1) Setting "half-duplex transmission", "non-priority", and "not resend":
rocedure
(1) Transmission method
b l bO
Write
1.
0: Fullduplextransmission
[
1: Half-duplex transmission
.Set
bits b l to b15 of address 1OFH to either 0 or 1. (The AJ71C24 will
ignore the settings.)
(2) Priority setting when transmission has begun simultaneously
b 1 5
to
bO
lloH
+
(Default:
0)
Write
1
to
255.
This data
sets
the send wait time when data
transmission is started
or
restarted. (Unit: 100 msec)
(3)
Transmission method when data transmission is restarted
b15
to
b l bO
-
1 1
(Default: 0)
Write
0.
(This can be omitted since the default is 0.)
[
0: Not resend
1: Resend
Set bits b l to b15 of address 11 1 H either to 0 or 1. (The AJ71 C24 will
ignore the settings.)
xampleI
The CD terminal check is set to "Enabled".
Half-duplex transmission is used and the
non-priority of transmission and "not resend" are set. (Send wait time: 300 msec) (AJ71C24
I10 addresses: 80 to
9F)
(Sequence Program)
Write "1" to buffer memory address 10FH.
Write "3" to buffer memory address 110H.
Leave the setting of buffer memory
addresses lOBH and 111H for defaults.