Siemens SCALANCE W784-1 Compact Operating Instructions page 75

Note
For cabinet installation, we recommend that you do not install relays on the same or on
directly neighboring mounting rails
Follow the steps below to fit the adapter plate to an S7-300 standard rail:
1. Place the adapter plate on the upper edge of the S7-300 standard rail (position A in the
figure above).
2. At the bottom of the adapter plate, there are two holes with recesses. Use these holes to
screw the adapter plate to the S7-300 standard rail. The required screws (position B in
the figure above) are supplied with the adapter plate.
The threaded holes at the bottom of the adapter plate are not suitable for screwing the
plate to the S7-300 standard rail.
SCALANCE W-784-1xx / SCALANCE W-74x-1
Operating Instructions (Compact), Release 08/2007, A5E01174713-02
Mounting
4.2 Mounting with adapter plate
69