User Manual

1.5 Wiring Diagrams for Application
1.5.1 Program download
(valid for the 7521(D), 7522(D), 7523(D))
Note:
Ext. GND
Ext. 24V
10
9
8
7
6
11
5
4
12
13
GND
+
VS
D2
-
D2
+
D
O3
DO1
DO2
Di1/Init
2
1
Da
ta
+
TXD
4
5
6
7
8
3
9
RXD
Data-
RTS
75
21
DI
3
DI2
CTS
N/C
GND
N/C
7
6
5
4
3
8
2
1
9
DCD
RXD
TXD
RI
CTS
RTS
D
SR
GND
DT
R
PC COM-1/2/3/4
X1
X2
X3
3
2
1
COM1
Connect INIT* to GND
to disable autoexec.bat
Download
cable
CA0910F
• Connect the COM1 of the 7521(D)/7522(D)/7523(D) & PC’s COM-1/2 port
with the download cable, CA0910F
7521/2/2A/3/4/7 Series Hardware User’s Manual, Ver. 1.5 Sep/2002, 7Mh-001-15 -----31