Hardware reference guide
Networking
35013379 02 October 2007 279
Rear Panel 
Switches
Two rotary switches are located on the rear panel of the RIO Drop Modules and are 
used for setting RIO drop addresses (refer to the following illustration and table).
SW1 (top switch) sets the upper digit (tens); SW2 (bottom switch) sets the lower digit 
(ones). The illustration below shows the correct setting for an example address of 
11. 
The following table shows the node addresses of the SW1 and SW2 switches.
SW1 and SW2 Address Settings
Node Address SW1 SW2
1 ... 9 0 1 ... 9
10 ... 19 1 0 ... 9
20 ... 29 2 0 ... 9
30 ... 39 3 0 ... 9
40 ... 49 4 0 ... 9
50 ... 59 5 0 ... 9
60 ... 64 6 0 ... 4
Note: If "0" or an address greater than 32 is selected, the module displays a 
flashing ERROR A and ERROR B LED indicating an error condition. Only 
addresses 2 - 32 are valid.
1
3
0
9
2
6
4
5
8
7
1
3
0
9
2
6
4
5
8
7
SW1 (Tens)
SW2 (Ones)
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com










