7188XA/B/C & 7521/2/2A/3/4/7 Series Hardware User’ s Manual, Ver. 3.0 Sep/2002, 7Mh-001-20 -----
43
1.5 Wiring Diagrams for Application
1.5.1 Program download
Note:
•
There are 3 wires in the download cable
•
Connect the wire-1, label RX, to pin-4 of 7188XA
•
Connect the wire-2, label TX, to pin-5 of 7188XA
•
Connect the wire-3, label GND, to pin-6 of 7188XA
•
Connect the DB-9 of download cable to PC COM-1/2/3/4 port
Ext. GND
Ext. 24V
10
9
8
7
6
11
5
4
12
13
+VS
D2-
D2+
Init*
DI2
TXD4
RXD4
RXD3
2
1
DCD
Rxd/D+
4
5
6
7
8
3
9
Txd/D-
RI
CTS
7188XA/7188XAD
GND
TXD3
RTS
DSR
GND
DTR
7
6
5
4
3
8
2
1
9
DCD
RXD
TXD
RI
CTS
RTS
DSR
GND
DTR
PC COM-1/2/3/4
RX
TX
GND
Wire label of
CA0910
Program
download
wire
connection
DI1
DO2
DO1
3
2
1
Connect INIT* to GND
to disable autoexec.bat
GND
14
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