Publication IASIMP-QS003B-EN-P - October 2009 27
Prepare the CompactLogix Hardware        Chapter  1
6. Mount the 1769-SDN 
and 1769 I/O modules to 
the right of the controller 
on DIN rail.
In this quick start, the 
1769-SDN module is 
directly to the right of the 
controller in slot 1.
a. Pull locking tabs out.
b. Slide module along  
tongue-and-groove 
slots on the side of the 
controller or modules.
c. Push locking tabs in.
d. Slide white locking tab 
to the left.
A maximum of three 
modules can be mounted 
between the 1769-SDN 
and the power supply.
7. Mount the 1769-ECR 
end cap terminator.
a. Pull locking tab to the 
right.
b. Slide end cap on rail. 
c. Pull locking tab to the 
left.