Rockwell Automation 1769-L16ER-BB1B_L18ER-BB1B_L18ERM-BB1B CompactLogix 5370 L1 Controllers System Quick Start - Manual (Page 23)

Rockwell Automation Publication IASIMP-QS024B-EN-P - December 2012 23
Prepare the CompactLogix 5370 L1 Controller Hardware Chapter 1
Install the Local Expansion Module
This quick start uses a 1734-OB4E POINT I/O output module in a local expansion
module slot.
1. Make sure the DIN rail locking screw in the mounting base, for example, the 1734-TB
mounting base, is in the vertical position.
2. Align the tongue and groove slots
of the mounting base to the slots
on the right side of the controller
and push it back until it seats on
the DIN rail.
3. Use a small-bladed screwdriver to
rotate the DIN rail locking screw
to a horizontal position, locking
the mounting base in place.
4. Set the key position on the
mounting base before installing
the 1734-OB4E module.
This example shows position 1.
5. Make sure the output module’s key
position matches the position used
on the mounting base.