Allen-Bradley ControlNet 1786-RPFM Installation Instructions Manual page 5

ControlNet Modular Repeater Medium-distance Fiber Module
3. Press the module down onto the DIN rail until flush.
The locking tab should snap into position and lock the module to the
DIN rail.
4. If the module does not snap into position, use a screwdriver or similar
device to move the locking tab down while pressing the module flush
onto the DIN rail. Release the locking tab to lock the module in place.
If necessary, push up on the locking tab to lock.
AB Spares
1786-5.11 — February 1998
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