Omron CJ1W-PRT21 Operation Manual page 38

Connecting PC Components
2. The yellow sliders at the top and bottom of each Unit lock the Units
together. Move the sliders toward the back of the Units as shown below un-
til they click into place.
Note If the locking tabs are not secured properly, the CJ-series PLC may not func-
tion properly. Be sure to slide the locking tabs until they are securely in place.
3. Attach the End Cover to the Unit on the far right side of the Rack.
CPU Rack
Note Connect the I/O Control Unit directly to the CPU Unit to enable connecting
Expansion Racks.
Expansion Rack
Note Connect the I/O Interface Unit directly to the Power Supply Unit.
There is no Backplane for the CJ-series. The PC is constructed by connecting
Units together using the connectors on the sides.
Section 3-2
19