Rockwell Automation 1786-RPA/B ControlNet Modular Repeater Adapter Installation Instructions - Manual (Page 10)

10 ControlNet Modular Repeater Adapter
Rockwell Automation Publication 1786-IN013F-EN-P - April 2011
If the repeater adapter module does not snap into position, use a
screwdriver or similar device to move the locking tab down while
pressing the repeater adapter flush onto the DIN rail.
4. Release the locking tab to lock the adapter in place.
If necessary, push up on the locking tab to lock.
5. Once the repeater adapter module is attached to the DIN rail, slide the
repeater modules to the left to mate with the repeater adapter module.
31454C-M
31455-M