Operating instructions

Connecting up
SCALANCE W788-xPRO / W74x-1PRO/RR
A5E02280448-02, Release 11/2008
37
Pinning of the M12 male connector
Power supply over the M12 connector
The M12 male connector on the front of the SCALANCE W7xx has the following
pinning:
Pin Function
Pin 1 24 V DC
Pin 2 --
Pin 3 Ground
Pin 4 --
Lightning protection, power supply, and grounding
Notes on lightning protection
WARNING
Danger due to lightning strikes
Antennas installed outdoors must be within the area covered by a
lightning protection system. Make sure that all conducting systems
entering from outdoors can be protected by a lightning protection
potential equalization system.
When implementing your lightning protection concept, make sure you
adhere to the VDE 0182 or IEC 62305 standard.
A suitable lightning conductor is available in the range of accessories of SIMATIC
NET Industrial WLAN:
Lightning protector LP798-1N (order no. 6GK5798-2LP00-2AA6)
WARNING
Danger due to lightning strikes
Installing this lightning protector between an antenna and a SCALANCE
W-700 is not adequate protection against a lightning strike. The LP798-
1N lightening protector only works within the framework of a
comprehensive lightning protection concept. If you have questions, ask a
qualified specialist company.