Rockwell Automation 5000,D50006.2.10 PI INSTALLATION MANUAL - Manual (Page 102)

Chapter 7
Installing 1771 I/O
7-14
Install Modules
Open locking latch and insert each I/O module into the slot keyed for it.
Firmly press to seat each module into its backplane connector. After you
install all the modules, secure them with the module locking latch.
Install Wiring Arms
See the corresponding product data publication for the proper wiring arm
for each module. Snap each wiring arm onto the horizontal bar at the
lower front edge of the I/O chassis as shown in Figure 7.8. Typically, it is
necessary to start one corner of the C-shaped bracket over the horizontal
bar first, then slip the remainder over the bar with a twisting motion.
Figure 7.8
Snapping Wiring Arm into Chassis
Wiring arm
Horizontal bar
Remove
Install
17643
Swing each arm up to connect on the front edge of its module as shown in
Figure 7.9. Push each arm in until it is held in place by its locking tab.