OE Max Controls NX7 Installation Instructions Manual page 28

PLC Port1 (COM1)
(9-pin female D-sub)
1
2
3
5
4
9
4
5
8
3
7
6
2
6
7
1
8
9
IMPORTANT
28
NC
TXD
RXD
RTS
GND
485-
485+ The terminals #1 and
#3, and #2 and #4 are
CTS
connected internally,
Vcc
respectively
Use NX_CBLCPU02 or NX_CBLCPU05 cable from your
personal computer's serial port to COM1 port. See NX7
Controllers User Manual for more information about
wiring.
PLC Port2 (COM2)
(8-pin female RJ45)
No
1
2
3
4
5
8 7 6 5 4 3 2 1
6
7
8
Signal
485+
485-
485+
485-
Reserved
Signal GND
232C/RXD
232C/TXD