Rockwell Automation 1791-I0VX BLOCK I/O - Manual (Page 25)

Installing Block I/O
Chapter 2
2-13
Blocks must be wired in series as shown in Figure 2.4. Do not attempt to
wire any block in parallel.
The number of blocks used depends not only on the user requirements but
also on the system used.
Figure 2.4
Series Connection for Block I/O Using PLC-2, PLC-3 or PLC-5 Family
Programmable Controllers
Install terminating resistor on last block.
To Programmable Controller
or I/O Scanner Module
1 I/O Rack
1 I/O Rack
1 I/O Rack
1 I/O Rack
10929-I
Remote I/O Link Wiring