MINATO 1866 - Interface Signal Output

1. AA; Protective ground
2. BA; Received data. The Programmer receives data
from an external equipment.
3. BB; Transmitted data. The Programmer transmits
data
to an external equipment.
4. CA; Request to send (RTS)
ON: Informs
the Programmer that an external
equipment
is ready for reception.
OFF: Informs the Programmer that an external
equipment
is not ready for reception.
5. CB; Clear
to send (CTS)
ON: Informs an external equipment
that the
Programmer is ready for reception.
OFF: Informs an external equipment that the
Programmer is not ready for reception.
6. CC; Data set ready (DSR)
ON: Informs an external equipment
that the
Programmer is ready for send/receive.
OFF: Informs an external equipment
that the
8-2-2 Interface signal output
o Signal output
8251A or
equivalent
RXD
3
TXD
19
75188
75189
CTS
17
75188
RTS
23
75188
DTR
24
75189
DSR
22
26
Programmer is not ready for send/receive.
7. AB; Signal ground
20. CD; Data terminal ready (DTR)
ON: Informs
the Programmer that an external
equipment
is ready for send/receive.
OFF: Informs the Programmer that an external
equipment
is not ready for send/receive.
8. CE; Carrier detector (CD)
ON: Informs an external equipment that the
Programmer has detected a carrier.
OFF state not provided.
o Polarity
of interface signals
Voltage
Data signal
Control signal
+3
to +12 V 0 ON
-3 to -12 V
1
OFF
+5V
2.4K
TXD
2
RXD
<
0
3
RTS
4
CTS
5
DSR
6
DTR
20
F-GND
F
7
+12V
4.7K
CI
'\N
~
8
+12V
11