![background image](http://html1.mh-extra.com/html/icp-das-usa/7188e/7188e_hardware-user-manual_3581912086.webp)
The 7521 family & 7188E family can be combined in natured as follows:
5
3 4
2
1
8
7
6
H U B
RS-232/485/422
devices
H OST C OM PU TER
To Ethernet Router
fam ily
7188E
devices
fam ily
7188E
RS-232/485/422
Ethernet 10M
Ethernet 10M
7522A /7524/7527
fam ily
RS-232/485/422
devices
7521/7522/7523
fam ily
RS-232/485
devices
7188E Series Hardware User’s Manual, 2004, v2.2, 7MH-016-22 ----- 86