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7. INITIAL SETTING OF TRANSMISSION CONTROL DATA TO
BUFFER MEMORY
nrel cce-n
IIaLLVLV-m
7.1
Setting RS-232C CD Terminal Check EnablelDisable
Setting this RS-232C CD terminal check function to enable or disable deter-
mines whether or not the AJ71 C24 checks the ONJOFF status of the CD signal
1
(receive carrier detection signal).
Disabling the RS-232C CD terminal check function.
If a "1" is written t o buffer memory address lOBH, the AJ71C24 does not check
the ONIOFF status of the CD signal. It operates as if the CD signal were ON.
Setting method
b l bO
Default:
0
Write
0
or 1
0 :
Signal status checked
1: Signal status not checked
POINT
Set bits b l t o b15 of address 10BH to either 0 or 1.
(The AJ71C24 will ignore the settings.)
to disable the RS-232C CD terminal check function (AJ71C24 I10
addresses 80 to 9F).
(Sequence Program)
Write
"1"
to buffer address memory
10BH.
When the RS-232C is set to use half-duplex transmission (see Section 7.2),
set the CD terminal check t o "Enabled". Section 4.5.2 explains the con-
necting procedure.
If the CD terminal check is set to "Disabled", the transmission method is
automatically set to full-duplex transmission.
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