Allen-Bradley 1756-DHRIO - Remote I;O

Publication 1756-UM514B-EN-P - February 2003
1756-DHRIO Module Description 1-3
Remote I/O
When a channel on the module is configured for Remote I/O, the
module acts as a scanner for the remote I/O network. The
ControlLogix controller communicates to the module’s remote I/O
scanner to send and receive the I/O on the remote I/O network.
Figure 1.2 shows an example system.
Figure 1.2
41276
ControlLogix
chassis
1756-DHRIOControlLogix controller
1771-ASB
1746-ASB
PLC-5/20 in Adapter mode
1794-FLEX I/O
Remote I/O