Dear
Ko Sen Kiong
How
are you
As
your picture shown, your connection is right.
Now
I think the reason is from 701Server setting.
I
am not sure if you are familiar with the software.
Pls
follow attached detail instruction to check your 701server setting.
Best
regards
Mint

COM Port Setting
1.
Click “TCP/IP (No Com Port)”
2.
Click “Polling Message From Controller”
3.
Polling Interval 200ms
4.
Click “Yes”

LAN
setting
5.
Select Lan Base to AR-7xx/8xxE
6. Click right Node ID,
click IP and enter IP address and TCP/IP port as left picture show Note: Pls
first check your 721H node ID num.
The default Node ID is 001
7.
Click “Yes” and exit above setting.

Check
on/off line status
Y
mean device on line
X
mean device off line