User's Manual

16 General Description
2.4 POWER OVER ETHERNET (POE)
The alternative for powering the Shuttle
C
through an external PSU (adapter),
is using the Power-Over-Ethernet (PoE) version of the SG-15
Colour
.
In this way the SG-15
Colour
is powered directly through the Ethernet and you don’t
need to install a (230/110VAC) mains socket anymore somewhere in the middle
of the store, so in this way saving you quite some installation costs!
The Shuttle
C
PoE complies with the official standard: IEEE 802.3af.
For your information:
PoE uses either the 4 Ethernet data lines (pin 1,2,3,6), called End-Span, or the not
used Ethernet lines (pin 4,5,7,8), called Mid-Span, to transport the DC voltage to
the SG-15
Colour
. Which method is used, depends on the supplying powered network
switch (hub). The Shuttle
C
supports both methods automatically.
See also Appendix A.
Towards the host-side, this means that you need a special hub/router which
supports the Power-Over-Ethernet (PoE) feature following the official standard for
this: IEEE 802.3af.
To avoid any miscommunication in this area: Scantech does not supply
network components like a power injector, network cabling, powered
hubs etc.
When we ship the first unit(s) SG-15
Colour
PoE in the current stage, this is in most
cases for demo- or evaluation purposes. Therefore we DO include the standard
PSU. This is done ‘just to be sure’ and to give our customers the possibility to at
least turn-on the SG-15
Colour
independent from the hub, for instance for SG-15
Colour
configuration purposes.
Of course, for the real installation in the store (roll-out), with the SG-15
Colour
connected to a hub with Power-Over-Ethernet IEEE 802.3af, you do not need
the mains PSU (adapter).
In case a project roll-out starts, we will not include the mains PSU anymore.
Physically (i.e. inside the SG-15
Colour
) this means that we place a special PoE board
to support the PoE feature. See Appendix J for SG-15
Colour
POE Partnumbers.