Econ OP320 - Page 18

Page
18
of
86
Pages
OP
-
SYS
-
CAB connectin
g
diagram
:
OP side
（
9PIN
plug
）
computer(9PIN
plug
)
OP
-
SYS
-
CAB connectin
g
diagram
:
（
V4.0
）：
OP side
（
9PIN
plug
）
computer(9PIN
plug
)
RXD
2
2
RXD
TXD
3
3
TXD
7
CTS
4
GND
5
5
GND
1
-
5
-
5 OP520
Serial port pin
’
s de
finition ID number of
the
OP520.
PORT1 (download port):
Pin
’
s ID
Definition
1
NC
2
RXD
3
T
XD
4
NC
5
GND
6
NC
7
RTC
8
NC
9
NC
RXD
2
2
RXD
TXD
3
3
TXD
7
7
CTS
GND
5
5
GND