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A.1 MDI Settings
The Medium-Dependent Interface (MDI or RJ45) serves as the data/power interface between Ethernet
elements. As such, it has two optional connection methods to carry the power. Named Alternative A & B,
Table 1 details the two power feeding alternatives.
Delivering power through an RJ45 connector's center tap ("Phantom Feeding") guarantees that bi-directional
data flow is maintained, regardless of a module's power status.
A.2 Power Device Classification Values
Class PD Current – Classification Period
[mA]
0
0 – 4
9 – 12
1
2
17 -20
3
26 – 30
36 – 44
4
Industrial Renewable Energy 4-Port 10/100/1000T
802.3at PoE+ Managed Ethernet Switch/Router
Pin Alternative A Alternative B
Vport Negative
1
2
Vport Negative
3
Vport Positive
4
Vport Positive
5
Vport Positive
Vport Positive
6
7
Vport Negative
Vport Negative
8
Table -1 Alternative Table
PD Power – Operation Period
[W]
0.44 – 12.95
0.44 – 3.84
3.84 – 6.49
6.49 – 12.95
12.95 - 25
78
BSP-360
APPENDIX A.
Note
Default
Optional
Optional
Optional
Optional
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